Pre-Engineering Graphics 1
Hinsdale Central High School
USE THIS PAGE FOR ANY NOTES YOU WANT TO TAKE
THROUGHOUT THE SEMESTER
Pre-Engineering Graphics 1—Hinsdale Central High School
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PRE-ENGINEERING GRAPHICS 1
P
re-Engineering Graphics 1 is the
introductory course in a sequence of Drafting
courses offered at Hinsdale Central covering
the basic aspects of mechanical and computer
aided drafting. The course is a single semester in
length, and upon successful completion one half credit
toward graduation is earned.
The first goal of the course is to teach the student how
to use the computer as a tool to create the various
drawings assigned throughout the course. The software
utilized to do this is the latest version of AutoCAD and
Inventor. Once basic computer skills are learned and
practiced, each new unit covered will serve as a
“stepping stone” for the next unit, with skills building
upon one another.
All work assigned is expected and required to be
completed within the specified time period given to
you by your teacher. Your quarter grade and semester
grade are based in part on both the quality of
completed work and the quantity of work completed.
Any drawing not completed within the grading period
will receive a “0” - no points. No incomplete grades
will be given unless extreme conditions prevail.
Each drawing project is worth a certain number of
points as described by the teacher. Drawing skill,
neatness, accuracy, following of directions, and correct
problem solution will all determine the number of
points earned for each drawing.
plan to put in extra time and be sure someone will be
available to open the lab for you. Additionally, if you
have a study hall period during the day, in most
instances a pass will be given by your teacher when
asked to allow you to work in the CAD lab. If this is
done, the pass must be shown to the study hall teacher
first, then you must work in the CAD lab for the entire
period.
A typical follow-up course sequence students who wish
to study further in the area of Engineering or
Architecture include, Pre-Engineering Graphics 2,
Engineering Graphics, Architectural Drafting and
Advanced 3D Engineering and Architectural modeling.
There are also Honors options available for the
Engineer, Architecture and Advanced courses if you
wish to pursue that path.
At the end of the semester, a portfolio of student work
will be assembled and bound. The portfolio will
include all drawings, quizzes, and exercises completed
in the course. A creative cover page for the portfolio
will also be created by each student as part of the
semester grade.
Completion of make-up work is allowed (and
encouraged) before or after school. Under normal
circumstances the CAD lab is typically open from 7:308:00a.m. and from 3:00-3:30 p.m. after school. Always
see your instructor beforehand to let them know you
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Pre-Engineering Graphics 1—Hinsdale Central High School
GETTING STARTED
WORK STATIONS & MATERIALS
LOGGING ON
E
T
ach student will be assigned to a computer station
urn on the computer. Monitors and PC’s are
for the semester. A drawer will also be provided for the
storage of sketches, equipment, paper, and other
classroom materials. It is each student’s responsibility to
place his or her materials in their drawer at the end of
each class period. Also please report any damaged or
inoperable equipment to the teacher immediately.
usually already on to save you class time, so turning
them on is usually not necessary. If starting a “cold”
computer, i.e. one that has been shut down completely,
it may take several minuets for the computer to
complete all of the tasks required to start the operating
system and prepare the computer for use on the
The textbook, paper, sketch paper, and various supplies network. With this in mind, be patient while the
computer boots up. If you think the computer has
required to complete each assignment will be given to
each student by the teacher. The cost of these items is frozen, notify the teacher. Often turning off the
computer and retrying the start-up process is all that is
covered by the lab fee.
required.
Once the computer has successfully booted up, press the
Ctrl + Alt + Delete all together to bring up the
Windows 7 Client login-in menu.
In this menu you will need to enter two pieces of
information:
Name: Type your school I.D. Number
Password: For first time log ins it is typically your first
and last initials and the last four digits of your locker
number.
Once this information is entered, click “OK.” When
the desktop appears, click on the AutoCAD icon to
begin working in AutoCAD.
Pre-Engineering Graphics 1—Hinsdale Central High School
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TURNING IN WORK
It is the student’s responsibility to make sure that his/
her work is turned in on time, completed correctly, and
submitted with all the required information. Failing to
do so will result in point deductions that could easily be
avoided. With this in mind, self-checking work using
the following checklist should become a normal part of
submitting jobs for credit. This will help the student to
avoid common errors that lead to point deductions:
Job Submission Self-Check:
Basics:
- Student name in title block
- Correct job number
- Dated the day the job was printed
- No lowercase letters used
- Text used on the text layer only
- Personal logo added to title block
- Drawing centered and titled
- Use Centermark on arc, radius and diameter
dimensions
Work Sequence:
- Sketch job first (can be done outside class)
- Have sketch checked (Must be initialed by your
teacher before beginning in AutoCAD)
- Revise sketch
- Draw in AutoCAD
- Have CAD drawing checked prior to printing
- Turn in only what is due
- Work ahead at your own risk
Line Types:
-Hidden lines should have at least 3 dashes with
exception of counter-bore and counter sink
-Center lines should have one dash in the center of the
line
-Center marks should always have a plus in the center,
extension lines shall not cross the center mark
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Pre-Engineering Graphics 1—Hinsdale Central High School
FREE-HAND SKETCHING
I
n this course, all drawing assignments created are
called “Jobs.” All of jobs listed in this course outline
will eventually be plotted and evaluated. But before the
job is attempted in AutoCAD, it must be free-hand
sketched on graph paper. The reason for this is to help
the student learn how to “attack” a drawing, as well as
to help develop visualization skills necessary in any field
associated with engineering graphics. After all, when a
need to communicate an idea arises, a computer is not
always present!
E
very drawing assignment beginning with Job 1A
requires a freehand sketch on graph paper. The
sketch must include all of the necessary lines, notes, and
dimensions that will eventually be used on the drawing.
Each sketch must be approved by the teacher before
attempting the job in AutoCAD. Drawings begun in
AutoCAD without an approved sketch will suffer a
reduction in points and/or will have to be re-drawn.
For more information on free-hand sketching
technique, refer to “Chapter 2, Free-Hand Sketching”
in the course text. Pre-Engineering Graphics 1—Hinsdale Central High School
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CLASS POLICIES
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For full credit, all work must be submitted by the
due date given on the calendar for each job.
Excused absences must be made up outside of class
to avoid falling further behind. If you are absent
from class you are expected to work on the current
assignment during class and make up late work
outside of class.
Only excused absences will allow the student to
turn work in past the given due date without a
point reduction.
For every day you have an excused absence during
the assigned work time you will receive two days to
make up the work outside of class time. Please
arrange this with your teacher upon return to class.
Late work submitted past the original due date but
within a week of the original due date will receive a
10% reduction in points.
All work submitted beyond one week late will be
accepted for half credit only. This work will still be
marked up during grading just like all other work so
you may learn from your work.
Students with written extended time will receive 1
week of “extra time” per assignment (unless extra
time has been documented differently) which
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MUST be used outside of class time to make up
unfinished work. These students are expected to be
working on the current assignment during class as
well to avoid falling further behind. Academic dishonestly is strictly forbidden, and it
will be dealt with very severely. Giving or receiving
inappropriate aid, such as the turning in of another
student's work as one's own work, will result in a
grade of zero (0) for that the specific assignment(s),
as well as earn both parties a call home.
Students must sketch the drawing FIRST before
moving on to the CAD drawing. Failure to do this
will result in a 10% reduction of the student’s
grade.
All students must have EVERY assignment in their
network folder at ALL TIMES. This means if you
are saving all of your work to a flash drive, you must
store a copy on the school server first. This is to
deter and prevent academic dishonesty.
If academic dishonesty is in question and the
instructor cannot find your assignment(s) on the
school network, you will be, without question, cited
for academic dishonesty and given 0’s for the
assignment(s) in question.
After the student has reviewed the above late work policy the student must sign and date this form below. The
student will then return this sheet to their teacher where it will be kept on file for the duration of the class.
STUDENT SIGNATURE
X_________________________________________________
PRINTED NAME_____________________________________________
7
DATE______________________
Pre-Engineering Graphics 1—Hinsdale Central High School
Pre-Engineering Graphics 1—Hinsdale Central High School
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UNIT ONE
TWO DIMENSIONAL DRAWING U
settings, title block information, etc., each time a new
drawing is started.
When AutoCAD is first launched, the graphics window
displayed is blank. It will remain this way until previously
saved work is opened or a new drawing created. To create the
During this unit, think of the objects assigned as
manufactured of very thin flat materials -perhaps something prototype drawing you will customize the title block as
directed in class. The file for the stock Prototype Drawing
made of sheet metal, cardboard, plastic sheets, cloth, or
leather. Many of these parts could be cut on our laser cutter. used in class will be found in the R: drive and will be titled
PEG 1 Blank with a year or something similar , and can be
found
on the network as described in class. At first, all
PROTOTYPE DRAWING WITH TITLE BLOCK
students will see exactly the same attributes displayed in this
efore computers, each time a new drawing was started, a file. After customizing, each student’s prototype will differ as
information, such as student name and logo, are added.
drafts person would take out a clean sheet of drawing
Once customized, the prototype drawing should then be
paper complete with a pre-printed border already in place,
saved to your network folder, found on the “H” drive of the
and begin the drawing.
computer, for later use.
With computers, the same process is still needed. A
document is usually created that has a title block and all
Before a new assignment is started, such as Job 1a, the
standard settings ready to go. Just like the pre-printed sheets customized Blank document is opened, and a new drawing
used before computers, this is done to avoid re-doing the
begun. Since the new drawing uses the prototype drawing as
same steps each time a new drawing is started. Such a
a starting point, it will have the information for the units,
document is called a Prototype Drawing. The Prototype
limits, layers, text, etc.. already preset. Drawing contains all of the necessary information needed to
complete the assignment without having to reset drawing
nit One: Two Dimensional Drawing puts into
practice and perfects many of the basic AutoCAD
skills learned in the first days of the course.
B
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Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 1A
JOB DUE DATE:________________________
BASE PLATE Note:
For the first job, the instructor will lead you step-by-step through this problem. To avoid learning poor habits, follow
along with the instructions in class as you construct the first assignment rather than working ahead on your own.
DIRECTIONS:
• On a sheet of graph paper, sketch the Base Plate shown below using the grid lines to help you create a neat and
accurate drawing.
• Begin the sketch by drawing the horizontal and vertical center lines.
• Include all dimensions required to complete the drawing on your sketch. Do not dimension the CAD drawing
however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “BASE PLATE” in capital letters. Use the MTEXT command with the letter
height set to .250.
• Save this drawing to your network folder as “Job 1a-Base Plate.” DO NOT PRINT. Move on to 1B.
TIPS:
• Balance the drawing around the horizontal and vertical center lines. To do this, count the graph spaces above and
below the horizontal center line and to the right and to the left of the vertical center line.
• For easy construction, remember to use the “OFFSET” command in AutoCAD.
• The figure shown below can be found on Page 79, Figure 4-52, of the text.
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 1B
JOB DUE DATE:________________________
SHIM IRECTIONS:
D
• On a sheet of graph paper, sketch the Shim shown below using the grid lines to help you create a neat and accurate drawing.
• Begin the sketch by drawing the horizontal and vertical center lines.
• Include all dimensions required to complete the drawing on your sketch. Do not dimension the CAD drawing however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “SHIM” in capital letters. Use the MTEXT command with the letter height set
to .250.
• Save this drawing to your network folder as “Job 1b-Shim.” DO NOT PRINT. Move on to 1C.
TIPS:
• Balance the drawing around the horizontal and vertical center lines. To do this, count the grid spaces above and below the
horizontal center line and to the right and to the left of the vertical center line.
• For easy construction, remember to use the “OFFSET” command in AutoCAD.
 For the center diamond, it is often easier to draw a square first, then rotate it 45º. Use “midpoint” in OSNAP to draw lines
to find the center of the square, then use “center point” to place it into correct position.
 You may also find it easier to use the polygon tool to create the square. This will be discussed as well.
• The figure shown below can be found on Page 80, Figure 4-54, of the text.
Notes: 11
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 1C
JOB DUE DATE:________________________
SHEET METAL STAMPING - METRIC IRECTIONS:
D
• On a sheet of graph paper, sketch the Sheet Metal Stamping shown below using the grid lines to help you create a neat and
accurate drawing. To convert to inches, divide by 25.4. Round to the nearest measurement.
• Begin the sketch by drawing the horizontal and vertical center lines.
• Include all dimensions (in mm) required to complete the drawing on your sketch. Do not dimension the CAD drawing
however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “SHEET METAL STAMPING” in capital letters. Use the MTEXT command with
the letter height set to 6.35mm or (.25”)
• Save this drawing to your network folder as “Job 1c-Sheet Metal Stamping.” DO NOT PRINT. Move on to 1D.
TIPS:
• Note the lack of Center Mark/Lines on this job compared to 1A & 1B.
• Layout tips for this figure can be found on Page 80, Figure 4-55, of the text.
• Scale up your template by 25.4. When you print, you’ll have to scale back down your drawing by 1/25.4. (decimal value)
• Balance the drawing around a horizontal and vertical center. To do this, count the grid spaces above and below the horizontal center and to the right and to the left of the vertical center.
• For easy construction, remember to use the “OFFSET” and “COPY” commands in AutoCAD.
Notes:
METRIC DRAWING
Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 1D
JOB DUE DATE:________________________
ADJUSTING ARM IRECTIONS:
D
• On a sheet of graph paper, sketch the Adjusting Arm shown below using the grid lines to help you create a neat and accurate drawing.
• Begin the sketch by drawing the horizontal center lines. All other centers are based off this line.
• Include all dimensions required to complete the drawing on your sketch. Do not dimension the CAD drawing however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “ADJUSTING ARM” in capital letters. Use the MTEXT command with the letter
height set to .250.
• Save this drawing to your network folder as “Job 1d-Adjusting Arm.”
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation. The next page will assist you in printing. Be
sure to note the correct placement of all of the drawings.
TIPS:
• Layout tips and drawing strategy for this figure can be found on Page 81, Figure 4-56 in the text.
• Begin the drawing with the horizontal center line, then locate all the other center points off of that. Once all centers are
found, placing circles and connecting lines will make the drawing much easier to construct.
• For easiest construction, remember to use the “OFFSET” and “COPY” commands in AutoCAD.
• All text size other than titles (1/4”) on drawings should be set at 1/8”. This is a standard in the drafting industry.
Notes: 13
Pre-Engineering Graphics 1—Hinsdale Central High School
PLOTTING FROM AUTOCAD
SUBMITTING JOBS 1A-1D Printing
documents from any CAD program is called plotting. This term originates from the early days of CAD, when all drawings
needed to be output to a specialized device called a “plotter” which was capable of printing very accurate lines sizes and dimensions.
Today, CAD documents can be printed on standard laser writers or modern plotters. For the first job of this class you will use a
standard Bsize (11x17) laser printer to output Jobs 1a - 1d.
DIRECTIONS:
• Open a prototype drawing with your customized title block from you network folder.
• Change the job number to Job 1A-D
• Change the date in the title block to reflect date of printing.
• Divide the title block drawing area into four quadrants (use the OSNAP command and MIDPOINT).
• In the original job documents, scale each original job drawing by .5, but do not scale the titles.
• Cut/Paste each of the first four jobs within the quadrants as follows:
- Job 1a in the upper left;
- Job 1b in the lower left;
- Job 1c in the upper right;
- Job 1d in the lower right.
• Move each drawing to the center of the appropriate quadrant.
• Use the ZOOM EXTENTS command and save your work (Double-click the scroll wheel).
• Send the drawing to the printer:
- File/Plot;
- Printer is HP5550.
Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 2A
JOB DUE DATE:________________________
KEY PLATE IRECTIONS:
D
• On a sheet of graph paper, sketch the Key Plate shown below using the grid lines to help you create a neat and accurate
drawing.
• Begin the sketch by drawing the horizontal center lines. All other centers are based off this line.
• Include all dimensions required to complete the drawing on your sketch. Do not dimension the CAD drawing however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “KEY PLATE” in capital letters. Use the MTEXT command with the letter height set
to .250.
• Save this drawing to your network folder as “Job 2a - Key Plate.” DO NOT PRINT. Move on to 2A.
TIPS:
• Balance the drawing around the horizontal and vertical center lines. To do this, count the grid spaces above and below the
horizontal center line and to the right and to the left of the vertical center line.
• For easy construction, remember to use the “OFFSET” and “COPY” commands in AutoCAD.
 The figure shown below can be found on Page 82, Figure 4-58 in the text.
 3/4 drill can confuse many as to what that means. It points to a complete circle/hole so this would be a diameter feature.
If it were a partial arc it would then be a radius like the 1” Radius on the bottom right.
Notes: 15
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 2B
JOB DUE DATE:________________________
TEMPLATE IRECTIONS:
D
• On a sheet of graph paper, sketch the Template shown below using the grid lines to help you create a neat and accurate
drawing.
• Begin the sketch by drawing the horizontal center lines. All other centers are based off this line.
• Include all dimensions required to complete the drawing on your sketch. Do not dimension the CAD drawing however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “TEMPLATE” in capital letters. Use the MTEXT command with the letter height set
to .250.
• Save this drawing to your network folder as “Job 2b - Template.” DO NOT PRINT. Move on to 2C.
TIPS:
• Balance the drawing around the horizontal and vertical center lines. To do this, count the grid spaces above and below the
horizontal center line and to the right and to the left of the vertical center line.
• For easy construction, remember to use the “OFFSET” and “COPY” commands in AutoCAD.
• The figure shown below can be found on Page 83, Figure 4-64 in the text.
• You will need to use a TANGENT line to complete this drawing properly with respect to the R. 1 1/4 and R. 5/8 circles.
Notes: TEMPLATE Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 2C
JOB DUE DATE:________________________
GASKET IRECTIONS:
D
• On a sheet of graph paper, sketch the Gasket shown below using the grid lines to help you create a neat and accurate drawing.
• Begin the sketch by drawing the horizontal center lines. All other centers are based off this line.
• Include all dimensions required to complete the drawing on your sketch. Do not dimension the CAD drawing however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “GASKET” in capital letters. Use the MTEXT command with the letter height set
to .250.
• Save this drawing to your network folder as “Job 2c - Gasket.” DO NOT PRINT. Move on to 2D.
TIPS:
• Begin the drawing with the horizontal center line and small circle.
• Use the (polar) “ARRAY” command to duplicate both small circles and center lines. UNCHECK “Associative”.
• Remember to check “CENTER POINT” in Osnap settings.
 The figure shown below can be found as Figure 4-62 on Page 83 in the text.
 Do not DIMCENTER the small holes. You will use an alternate method to do these center marks.
Notes: 17
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 2D
JOB DUE DATE:________________________
SLOTTED CAM IRECTIONS:
D
• On a sheet of graph paper, sketch the Slotted Cam shown below using the grid lines to help you create a neat and accurate
drawing.
• Begin the sketch by drawing the horizontal center lines. All other centers are based off this line.
• Include all dimensions required to complete the drawing on your sketch. Do not dimension the CAD drawing however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “SLOTTED CAM” in capital letters. Use the MTEXT command with the letter height
set to .250.
• Save this drawing to your network folder as “Job 2d - Slotted Cam.”
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Begin the drawing with the horizontal center line and slot.
• Use the (polar) “ARRAY” command to duplicate both slots and center lines 6 times.
• Remember to set “CENTER POINT” in Osnap settings.
 The figure shown below can be found on Page 82, Figure 4-60 in the text.
 You can use an XLINE to place the angled center lines, or rotate copy one of the originals. Again, use the method explained in 2C to DIMCENTER 2D.
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
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PLOTTING FROM AUTOCAD
JOB DUE DATE:________________________
SUBMITTING JOBS 2A-2D DIRECTIONS:
• Open a prototype drawing with your customized title block from you network folder.
• Change the job number to Job 2A-D
• Change the date in the title block to reflect date of printing.
• Divide the title block drawing area into four quadrants (use the OSNAP command and MIDPOINT).
• In the original job documents, scale each original job drawing by .5, but do not scale the titles.
• Cut/Paste each of the first four jobs within the quadrants as follows:
- Job 2a in the upper left;
- Job 2b in the lower left;
- Job 2c in the upper right;
- Job 2d in the lower right.
• Move each drawing to the center of the appropriate quadrant.
• Use the ZOOM EXTENTS command and save your work.
• Send the drawing to the printer:
- File/Plot;
- Set “Plot Device” as instructed;
- Check to make certain paper size is correct (11x17) and change if necessary;
- Click “OK.”
Once printed, submit the job and all sketches to your instructor for evaluation.
TIPS:
• Be certain that the text is on the text layer and the scale is correct before printing.
• Be certain to use the ZOOM EXTENTS command and save your work prior to plotting.
• After sending the document to the printer, check to make certain the proper paper tray (11x17) is in the printer. Change as
necessary. 19
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 3A
JOB DUE DATE:________________________
GASKET IRECTIONS:
D
• On a sheet of graph paper, sketch the
Gasket.
• Include all dimensions and notes required to complete the drawing on your
sketch. Do not dimension the CAD
drawing however.
• Be sure to ROTATE your center marks.
• Below the drawing, print the name of the
object using the MTEXT command with
the letter height set to .200.
• Save this drawing to your network folder.
•Place part on the left side. Do not print
drawing. JOB 3B
COVER PLATE DIRECTIONS:
• On a sheet of graph paper, sketch the
Cover Plate.
• Include all dimensions and notes required to complete the drawing on your
sketch. Do not dimension the CAD
drawing however.
• Below the drawing, print the name of the
object using the MTEXT command with
the letter height set to .200.
• Save this drawing to your network folder.
• Place part on the right, and print 3A and
3B. Turn in sketches with drawing.
• Plot 3A and 3B at a 1:1 scale.
***PRINTING***
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When finished with both drawings Place them BOTH on one sheet of 11x17 B size
paper keeping them at their original size.
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DO NOT worry about a center line to divide the page. Just be sure both objects are
on the page and 1:1 with .250. titles and print the drawing.
Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 3C
JOB DUE DATE:________________________
2D FINAL OBJECT & PRACTICE TEST IRECTIONS, PART I: WORKING SKETCH
D
• On a sheet of standard graph paper, sketch the object shown below.
• Include all dimensions required to complete the drawing on your sketch.
• Include your name (first and last), date and period on your sketch in the lower right corner.
DIRECTIONS, PART II: DRAWING IN AUTOCAD
• Using your sketch as a guide, draw the object below. No dimensions are needed on your CAD drawing.
• Save often as you work!
• Save this drawing to your network folder as “2d final object.”
• When finished, save the CAD drawing. You will need this for the Job 3C Test.
• Below the drawing, print the name, “2D FINAL OBJECT” in capital letters. Use the MTEXT command with the letter
height set to .250.
DIRECTIONS, PART III: MEASUREMENT CHECK
• Once finished with the CAD drawing, log in to ExamView and navigate to your instructor’s R: Drive. Find the test labeled
“Job 3C Distance Check”.
• Using the “MEASURE” command, answer the questions about measurements points on the measurement sheet. Once
finished, submit your ExamView test and have your teacher sign off. (be sure your UNITS are set correctly)
• Be sure to answer ALL questions in decimal format to FOUR decimal places.
SUBMITTING YOUR WORK:
• Use the “ZOOM EXTENTS” command, and save your drawing to your network folder.
• Plot the drawing on its own sheet using the plot command as done previously in class.
• Turn in your sketch, measurement sheet and CAD drawing to your instructor for evaluation.
Notes: 21
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 3C
DISTANCE CHECK REFERENCE PAGE Teacher initials with score:
DIRECTIONS:
 Use this sheet for your Job 3C distances. Pay close
attention to certain points such as 1 and I so you don’t
confuse one with the other.
 Be sure to use the MEASURE command and round to
4 decimal places. Any other method may not be
accurate.  When writing decimals such as “.25”, do NOT
include a leading zero before the decimal. Ex what not
to do: 0.25.  You will get 4 chances to correctly answer all of the
questions.  After you complete each try, have your teacher initial
on the line to the right and mark down your score.
We will take your best score of the 4 chances.  Really think about what you got wrong and use the
subsequent tries to fix your drawing, don’t just keep
measuring unless you made changes to rectify it. Attempt 1 ________________Score:______________
Attempt 2 ________________Score:______________
Attempt 3 ________________Score:______________
Attempt 4 ________________Score:______________
#1
Pre-Engineering Graphics 1—Hinsdale Central High School
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Pre-Engineering Graphics 1—Hinsdale Central High School
SUPPLEMENTARY PROBLEM
JOB 3D
JOB DUE DATE:________________________
- CLOCK IRECTIONS:
D
• On a sheet of graph paper, sketch the
Clock.
• Include all dimensions and notes required to complete the drawing on your
sketch. Do not dimension the CAD
drawing however.
• Below the drawing, print the name of the
object using the MTEXT command with
the letter height set to .200.
• Save this drawing to your network folder.
•Turn in both sketch and drawing to your
instructor when complete. SUPPLEMENTARY PROBLEM
JOB 3E
- ARMATURE LAMINATION DIRECTIONS:
• On a sheet of graph paper, sketch the
Armature Lamination.
• Include all dimensions and notes required to complete the drawing on your
sketch. Do not dimension the CAD
drawing however.
• Below the drawing, print the name of the
object using the MTEXT command with
the letter height set to .200.
• Save this drawing to your network folder.
•Turn in both sketch and drawing to your
instructor when complete.
Note that the teeth of the gear start at the
center origin and angle out to th 3/8
width of the tooth. Pre-Engineering Graphics 1—Hinsdale Central High School
24
UNIT 2
ORTHOGRAPHIC PROJECTION: THREE-VIEW DRAWING T
his unit will instruct the student how to draw the three
views, or principle views, of an object using orthographic
projection.
The term “orthographic” refers to the nature of all objects having
the ability to be drawn from the front and rear, right and left, and
top and bottom sides. For nearly all construction documents
however, usually only three of these possible six sides are drawn.
Each “side” of an object drawn is called a “view.” Typically only
a front, top, and a right-side view of each object is drawn.
The layout of views is critically important. Each view is placed in
relationship to the other. For example, the top view is drawn
above the front view, the right-side view to the right of the front
view, etc.. Each job is in this unit will require these three views
for completion of the drawing assignment.
The term “projection” refers to the drawing method in which
lines are “projected” from view to use one view to solve another
view. With consistent practice of projection of corners within
views, nearly any object can be drawn in three views even when
all the dimensional information is incomplete.
For greater information on three-view drawing, consult pages 121
-137 in Chapter 7 of the course text.
25
Pre-Engineering Graphics 1—Hinsdale Central High School
THE THREE-VIEWS
SEEING THE THREE DIMENSIONS OF AN OBJECT Pre-Engineering Graphics 1—Hinsdale Central High School
26
JOB 4
JOB DUE DATE:________________________
SIMPLE THREE-VIEW DRAWINGS I IRECTIONS:
D
• On a sheet of graph paper, sketch the three views of each figure at right
using the grid to help you create an accurate drawing. Each grid space
shown equals one-quarter inch from any intersection to another.
• Allow 1” between views.
• Show all projection lines from one view to the next in your sketch. Be
sure to include the 45-degree “mirror line/miter line” with all projection
lines.
• Include all dimensions required to complete the drawing on your sketch.
Do not dimension the CAD drawing however.
• In AutoCAD create three views of each of the problems.
• Show projection lines to and from each view in AutoCAD using the
“projection” layer for any such lines.
• On a standard title block document, divide the border into four quadrants. Place each figure within these quadrants as follows:
Figure A in the upper left;
Figure B in the lower left;
Figure C in the upper right;
Figure D in the lower right.
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Review “hidden lines” on page 134 in your text, figure 7-20.
• Remember to use “Line Type Scale” to set Hidden Line dashes to appropriate length.
• Remember to use the same Line Type Scale for all lines of the same type.
• All of your views should line up as shown below. (plus projection lines)
EXAM-
27
PLE: Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 5
JOB DUE DATE:________________________
SIMPLE THREE-VIEW DRAWINGS II IRECTIONS:
D
• On a sheet of graph paper, sketch the three views of each figure at right using the grid to help you create an accurate drawing. Each grid space shown
equals one-quarter inch.
• Allow 1” between views.
• Show all projection lines from one view to the next in your sketch. Be sure
to include the 45-degree “mirror line” with all projection lines.
• Include all dimensions required to complete the drawing on your sketch.
Do not dimension the CAD drawing however.
• In AutoCAD create three views of each of the problems.
• Show projection lines to and from each view in AutoCAD using the
“projection” layer for any such lines.
• On a standard title block document, divide the border into four quadrants.
Place each figure within these quadrants as follows:
Figure A in the upper left;
Figure B in the lower left;
Figure C in the upper right;
Figure D in the lower right.
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Review “hidden lines” on page 134 in your text, figure 7-20.
• Remember to use “Line Type Scale” to set Hidden Line dashes and Center
Lines to appropriate length.
 Remember to use the same Line Type Scale for all lines of the same type.
 Don’t forget projection lines.
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
28
ORTHOGRAPHIC PRE-TEST
JOB DUE DATE:________________________
COMPLETING VIEWS IN 3-D IRECTIONS:
D
• Your instructor will provide the pre-test.
• Using the pictorial drawings given, choose the correct view from those given.
• You will be asked to choose a front view or a top view as indicated on each problem.
• You may attempt to sketch the problems in the white space provided on the pre-test.
• Once finished, return the pre-test to your instructor for evaluation.
TIPS AND PREPARATION:
• Review “Progressive cuts” (Fig. 7-23. pg. 136) and “Intersect on and tangent points” (Fig. 8-19, p.155).
• Take your time and try to visualize each view requested.
• Try sketching views of difficult objects is stumped. 29
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 6
JOB DUE DATE:________________________
BEARING CAP IRECTIONS:
D
• On a sheet of graph paper, sketch the top, right and front views of the Bearing Cap shown below using the grid lines to help
you create a neat and accurate drawing.
• Include all dimensions and notes required to complete the drawing on your sketch. Do not dimension the CAD drawing
however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “BEARING CAP” in capital letters. Use the MTEXT command with the letter height
set to .250.
• Save this drawing to your network folder as “Job 6 Bearing Cap.”
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Begin the drawing with the horizontal and vertical center lines.
• Remember how curved objects are shown in views where the curve can not be seen.
• Study carefully how the “ears” intersect the curved portion of the bearing cap.
• Be certain to project all corners.
 The figure shown below can be found on Page 173, Figure 8-66 in the text.
 Set spacing between views to 1”.
 Remember the Dimcen value will change for the small hole, try something around –.03..
Notes: BEARING CAP Pre-Engineering Graphics 1—Hinsdale Central High School
30
JOB 7
JOB DUE DATE:________________________
SHAFT BRACKET IRECTIONS:
D
• On a sheet of graph paper, sketch the top, right and front views of the Shaft Bracket shown below using the grid lines to
help you create a neat and accurate drawing.
• Include all dimensions and notes required to complete the drawing on your sketch. Do not dimension the CAD drawing
however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “SHAFT BRACKET” in capital letters. Use the MTEXT command with the letter
height set to .250.
• Save this drawing to your network folder as “Job 7 Shaft Bracket.”
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Begin the drawing with the center line.
• “REAM” is a Diameter dimension. The Major Diameter concentric with the .750 REAM is 1.25.
• Review “Fillets and Rounds” Page 229, especially Figure 11-6 on Page 230, in order to draw the fillets, rounds and intersections between them correctly.
• Add Ribs Page 260-261
•Draw without fillets first. Then add fillets second. Fillets and rounds are 1/16”.
 Set spacing between views to 1” and add finish marks where appropriate.
Notes: SHAFT BRACKET 31
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 8
JOB DUE DATE:________________________
CLAPPER BOX IRECTIONS:
D
• On a sheet of graph paper, sketch the top, right and front views of the Clapper Box shown below using the grid lines to
help you create a neat and accurate drawing.
• Draw the sketch for this part at 1/2 scale.
• Include all dimensions and notes required to complete the drawing on your sketch. Do not dimension the CAD drawing
however.
• Only after you receive approval, begin the CAD drawing based on your sketch.
• Below the drawing, print the name, “CLAPPER BOX” in capital letters. Use the MTEXT command with the letter height
set to .200.
• Save this drawing to your network folder as “Job 8 Clapper Box.”
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Begin the drawing with the horizontal center line.
• Review “Types of holes,” Page 237, Figure 11-22, in order to draw the counter bore properly.
• Remember how curved objects are shown in views where the curve can not be seen.
• Be certain to project all corners.
• The figure shown below can be found on Page 249, Figure 11-56 in the text.
 Review page 197 figure 10-7 for finish marks and Page 198 10.7 for FAO explanation.
 Set spacing between views to 1”.
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
32
SUPPLEMENTARY PROBLEM
JOB DUE DATE:________________________
JOB 8A CONTROL DOG IRECTIONS:
D
• On a sheet of graph paper, sketch the top, right
and front views of the Control Dog.
• Include all dimensions and notes required to complete the drawing on your sketch. Do not dimension the CAD drawing however.
• Below the drawing, print the name of the object
using the MTEXT command with the letter
height set to .200.
• Save this drawing to your network folder.
• Turn in both sketch and drawing to your instructor when completed. SUPPLEMENTARY PROBLEM
JOB 8B SHIFTER BLOCK DIRECTIONS:
• On a sheet of graph paper, sketch the top, right
and front views of the Shifter Block.
• Include all dimensions and notes required to complete the drawing on your sketch. Do not dimension the CAD drawing however.
• Below the drawing, print the name of the object
using the MTEXT command with the letter
height set to .200.
• Save this drawing to your network folder.
• Turn in both sketch and drawing to your instructor when completed. 33
Pre-Engineering Graphics 1—Hinsdale Central High School
Pre-Engineering Graphics 1—Hinsdale Central High School
34
UNIT 3
JOB DUE DATE:________________________
INVENTOR INTRODUCTION UNIT AND 3D
JOB 9 A-D
I’m sure many of you have been wondering exactly what that shiny puck on desk is with the glowing blue all semester long.
Well the wait is over. That little thing is called a Space navigator but we refer to it as the “puck” since it looks like a hockey
puck. This mouse as you may call it will allow you to manipulate a 3D drawing in space without needing to select a tool in
the program rotate it. This saves incredible amounts of time especially when you are in the industry with a project deadline.
The puck also has two shortcut commands that you can program to do just about anything you can think of.
We will be using these new pucks along with Inventor which is our 3d modeling software package. This unit an introductory
unit to get you thinking about what the future leads to in the Engineering Graphics and Advanced Modeling courses. For
our purposes in this class we will be using old drawings which you have already made yourself familiar with in the beginning
of this semester. Instead of drawing these parts in 2 dimensions flat on a sheet of paper we will be drawing them in 3D where
you can turn and tilt the part at will to show any surface you want to look at or work from.
The beginning of this lesson will be 100% teacher led with on screen step by step demonstrations showing you all steps necessary to get from the 2d drawing all the way through a 3d image, orthographic and isometric views and even a solid model!
Job 9a
• Using Job 4 from earlier this semester complete figure A-D using Inventor. The views are printed in the same order as Job
4.
• Print all four objects on one sheet of 11x17 paper following the same arrangement as job 4 with hidden line top view, front
view, right side view and a shaded isometric.
Job 9b
• Using Job 5 from earlier this semester complete figure A-D using Inventor. The views are printed in the same order as Job
5.
• Following the teachers instructions print all four objects on one sheet of 11x17 paper with hidden line top view, front view,
right side view and a shaded isometric.
Job 9c
• Using Page 173 from the blue hard cover text book on your desk draw figure 8-65 using Inventor
• Following the teachers instructions print the object on one sheet of 11x17 paper with hidden line top view, front view, right
side view and a shaded isometric.
Job 9d
• Using Page 168 from the blue hard cover text book on your desk draw figure 8-49 using Inventor
• Following the teachers instructions print the object on one sheet of 11x17 paper with hidden line top view, front view, right
side view and a shaded isometric.
Notes:
35
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 10
JOB DUE DATE:________________________
3D PRINTING INTRODUCTION / INDEPENDENT PROJECT
There
is a relatively new technology on the market today called Rapid Prototyping, additive manufacturing or 3D
printing. You may have heard of this technology already, if not the basic idea is anything you can draw in 3D can be
printed to come out of a machine in 3 dimensions. In job 9 you worked on several 3D models using inventor and
learned how to print them out on 11x17 paper and make orthographic views from the 3D data as well as Isometric
views. This lesson will allow you to take this project one step further. From all the 3D parts we worked on using Inventor use your new skills and come up with a part or design of your own. This can be a replication of something already made or something totally new.
Our 3 different 3d printers have software installed on your computers that you will use to setup your parts for printing. This allows you to scale down and print your models to the 3d printer. If your model is larger then a couple cubic inches in size we can hollow it out or scale it down to make the material use more reasonable.
Job Requirements
You are to design your own project on Inventor to be 3D printed on the 3D Prototyping machine.
For any object that you choose, it must be approved by the instructor.
Things to keep in mind
-Keep the model approximately 3” x 3”
-If your model is long and skinny you may make it longer since it will use less material.
-If your model is boxy and large with lots of solid space inside try to hollow it out to make it lighter
and it will also use less material.
- If your model has tiny edges or points, exaggerate their size to be larger than life so they don’t break off.
Some examples can include:
- Object from home (ask instructor)
- Shoe
- Guitar
- Gear
- Tool (wrench, pliers...)
- NO PHONES
Notes:
Pre-Engineering Graphics 1—Hinsdale Central High School
36
UNIT 4
ISOMETRIC AND OBLIQUE PICTORIAL DRAWING A
pictorial drawing is one in which an object is drawn in such
a position that several faces appear in a single view. Pictorial
drawings are excellent for showing the general appearance of objects. They are often used to supplement multi-view drawings. In
Unit 3, students will learn how to draw the two most common
styles of pictorial drawing: Isometric and Oblique.
Both Isometric and Oblique drawings are especially helpful for
showing people unfamiliar with reading technical documents the
appearance of objects that may require visualization of blueprints.
Because of this, pictorial drawings are used extensively in catalogs,
sales literature, and technical books. They are Also used extensively in Patent Office drawings, and machine, structural, and
architectural drawings.
Isometric and Oblique drawings differ significantly in construction. Oblique drawings show vertical and horizontal dimensions
as vertical and horizontal, with depth drawn on an angle. Isometric drawings show vertical dimensions as vertical and use a 30º
angle for both horizontal dimension (width) and depth.
A
further difference is how depth is measured. Due to the distortion caused by Oblique drawings, depth can be drawn at full
depth (Cavalier-Oblique), three-quarter depth (NormalOblique), or half depth (Cabinet-Oblique). Isometric drawings
are normally drawn at full depth.
For greater information on Isometric drawing, consult pages 375385 of the course text. For greater information on Oblique drawing, consult pages 385-391 of the course text.
37
Pre-Engineering Graphics 1—Hinsdale Central High School
OBLIQUE DRAWING
AXIS ANGLE, DEPTH & CONSTRUCTION Pre-Engineering Graphics 1—Hinsdale Central High School
38
JOB 11A - 11C
JOB DUE DATE:________________________
OBLIQUE DRAWING: STEP FLANGE, FLANGE & CAPITAL INITIAL Jobs
11a through 11d will be plotted on the same sheet of paper divided into four quadrants as done for previous jobs. Complete each
drawing in the sequence given, then once approved by your instructor, plot Jobs 11a-11d at the same time.
DIRECTIONS:
• On a sheet of graph paper, sketch an Oblique drawing of one of your initials (a capital “N” is shown for example) and the
two objects shown below. Use the views given to construct the drawings.
• Draw your initial as a cavalier oblique (full depth) with 45º for the angle of depth. Draw the other figures as a cabinet
oblique (half depth), with 45º for the angle of depth.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Divide the drawing area inside the border into four quadrants. Place the Step Flange in the upper left quadrant, the Flange
in the upper right quadrant, and your initial in the lower left quadrant.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center each drawing within the quadrant after it has been scaled.
• Move on to Job 11d.
TIPS:
• Remember that in Oblique drawing vertical lines are drawn vertical, horizontal lines horizontal, but all depth lines are
drawn at a consistent angle.
• Remember that circles should be shown as true circles in Oblique drawings.
• Remember to work from the centers, locating them first, then completing the drawing.
• When drawing the letter, remember that all stroke widths should be the same.
Notes: 39
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 11D
JOB DUE DATE:________________________
OBLIQUE DRAWING: TOOL SUPPORT IRECTIONS:
D
• On a sheet of graph paper, sketch an Oblique drawing of the Tool Support below. Use the views given to construct the
drawings.
• Draw the figure as a cabinet oblique (half depth), with 30º for the angle of depth.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Place the Tool Support in the lower right quadrant of the divided border.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Remember that in Oblique drawing vertical lines are drawn vertical, horizontal lines horizontal, but all depth lines are
drawn at a the same angle.
• Note that the base of the Tool Support is set back .50” from the front face.
Notes:
Pre-Engineering Graphics 1—Hinsdale Central High School
40
JOB 12A
JOB DUE DATE:________________________
OBLIQUE DRAWING: BELL CRANK Jobs
10a through 10d will be plotted on the same sheet of paper divided into four quadrants as done for previous jobs. Complete each
drawing in the sequence given, then once approved by your instructor, plot Jobs 10a-10d at the same time.
DIRECTIONS:
• On a sheet of graph paper, sketch an Oblique drawing of the Crank shown below. Use the views given to construct the
drawings.
• Draw the figure as a cavalier oblique (full depth), with 15º for the angle of depth.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Divide the drawing area inside the border into four quadrants. Place the Crank in the upper left.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Move on to Job 12b.
TIPS:
• Remember that circles should be shown as true circles in Oblique drawings.
• Construct the drawing from the center points, locating them first, then completing the drawing.
Notes: 41
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 12B
JOB DUE DATE:________________________
OBLIQUE DRAWING: GUIDE LINK IRECTIONS:
D
• On a sheet of graph paper, sketch an Oblique drawing of the Guide Link shown below. Use the views given to construct
the drawings.
• Draw the figure as a cavalier oblique (full depth), with 15º for the angle of depth.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Place the Guide Link in the lower left quadrant of the divided border.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Move on to Job 12c.
TIPS:
• Remember that circles should be shown as true circles in Oblique drawings.
 Remember to work from the centers, locating them first, then completing the drawing.
 Remember the top of this object is NOT a straight line!
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
42
JOB 12C
JOB DUE DATE:________________________
OBLIQUE DRAWING: SWIVEL PLATE IRECTIONS:
D
• On a sheet of graph paper, sketch an Oblique drawing of the Swivel Plate shown below. Use the views given to construct
the drawings.
• Draw the figure as a cabinet oblique (half depth), with 30º for the angle of depth.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Place the Swivel Plate in the upper right quadrant of the divided border.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Move on to Job 12d.
TIPS:
• Remember to work from the centers, locating them first, then completing the drawing.
• Remember that circles should be shown as true circles in Oblique drawings.
Notes: 43
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 12D
JOB DUE DATE:________________________
OBLIQUE DRAWING: BELL CRANK IRECTIONS:
D
• On a sheet of graph paper, sketch an Oblique drawing of the Bell Crank shown below. Use the views given to construct the
drawings.
• Rotate the axis of depth to show as much of the figure as possible and draw as a cavalier oblique (full depth), with 30º for
the angle of depth.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Place the Bell Crank in the lower right quadrant of the divided border.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Remember to work from the centers, locating them first, then completing the drawing.
• Remember to rotate the axis of depth to the left to show the left side of the object more clearly.
 Using a TTR circle will help you get the arc in the middle labeled “1.125R”.
 Reference page 107, Fig. 6-9 in order to complete this correctly.
 Draw one line with distance A, and two circles with distances B and C from opposite endpoints.
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
44
ISOMETRIC DRAWING
AXIS ANGLE, DEPTH & CONSTRUCTION 45
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 13A
JOB DUE DATE:________________________
ISOMETRIC DRAWING: PLATE Jobs
13a through 13d will be plotted on the same sheet of paper divided into four quadrants as done for previous jobs. Complete each
drawing in the sequence given, then once approved by your instructor, plot Jobs 13a-13d at the same time.
DIRECTIONS:
• On a sheet of isometric graph paper, sketch an isometric drawing of the Plate at 1/2 scale as shown below. Use the views
given to construct the drawings. All 4 sketches should fit on the same sheet so plan accordingly.
• Only after you receive approval of the instructor, begin the drawing in AutoCAD.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Divide the drawing area inside the border into four quadrants. Place the Plate in the upper left.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Move on to Job 13b.
TIPS:
• Remember that in isometric drawing vertical lines are drawn vertical, but all horizontal lines are drawn at a 30º angle.
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
46
JOB 13B
JOB DUE DATE:________________________
ISOMETRIC DRAWING: NOTCHED BLOCK IRECTIONS:
D
• On the same sheet of isometric graph paper, sketch an isometric drawing of the Notched Block at 1/2 scale as shown below.
Use the views given to construct the drawings.
• Only after you receive approval of the instructor, begin the drawing in AutoCAD.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Place the Notched Block in the lower left quadrant of the divided drawing area.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after they have been scaled.
• Move on to Job 13c.
TIPS:
 Remember that in isometric drawing vertical lines are drawn vertical, but all horizontal lines are drawn at a 30º angle.
 Because of the angle of this object some lines from one surface appear to be the same line as another surface. This is
NOT incorrect.
Notes: 47
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 13C
JOB DUE DATE:________________________
ISOMETRIC DRAWING: BABBITTED STOP IRECTIONS:
D
• On the same sheet of isometric graph paper, sketch an isometric drawing of the Babbitted Stop at 1/2 scale as shown below.
Use the views given to construct the drawings. Draw the sketch at 1:2 scale.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Divide the drawing area inside the border into four quadrants. Place the Babbitted Stop in the upper right.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Move on to Job 13d.
TIPS:
• Remember that in isometric drawing vertical lines are drawn vertical, but all horizontal lines are drawn at a 30º angle.
Notes:
Pre-Engineering Graphics 1—Hinsdale Central High School
48
JOB 13D
JOB DUE DATE:________________________
ISOMETRIC DRAWING: BRACE IRECTIONS:
D
• On the same sheet of isometric graph paper, sketch an isometric drawing of the Brace at 1/2 scale as shown below. Use the
views given to construct the drawings.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Divide the drawing area inside the border into four quadrants. Place the Brace in the lower right.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• To solve the angled corners of the Brace, draw the corners as if they are square first. Then measure the 1” distance along the
square corner lines, connecting these measurements to create angled corners.
• To find the 60º triangle height in the isometric drawing, draw a “helper view” of the triangle with the information known
first. For this, you will need to draw the right view in Orthographic, then copy the vertical line from this triangle to the
isometric drawing. Remember, height doesn’t change from Ortho to ISO.
Notes: Using the informa on we know from our object you can also do the trig to find the ver cal side. Just plug in our values of 60° and 2 to the formula below. 49
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 14A & 14B
JOB DUE DATE:________________________
ISOMETRIC DRAWING: STRAP & FLANGE Jobs
14a through 14d will be plotted on the same sheet of paper divided into four quadrants as done for previous jobs. Complete each drawing in the sequence given, then once approved by your instructor, plot Jobs 14a-14d at the same time.
DIRECTIONS:
• On a sheet of isometric graph paper, sketch an isometric drawing of the objects shown below. Use the views given to construct the drawings.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Divide the drawing area inside the border into four quadrants. Place the Strap in the upper right and the Flange in the
Lower right.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Move on to Job 14c.
TIPS:
• Work from the center of the circles first.
• Remember to use an “Axis End” ellipse, then type “I” to create an ISO CIRCLE.
• F5 will rotate the axis of the circle.
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 14C & 14D
JOB DUE DATE:________________________
ISOMETRIC DRAWING: SQUARE POST SUPPORT & STEP FLANGE IRECTIONS:
D
• On a sheet of isometric graph paper, sketch an isometric drawing of the objects shown below. Use the views given to construct the drawings.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Divide the drawing area inside the border into four quadrants. Place the Square Post Support in the upper left and the Step
Flange in the Lower left.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Work from the center of the circles first.
• Remember to use the ISO CIRCLE command and F5 to rotate the axis of the circle.
• Draw lines using OSNAP set to MIDPOINT to find the center of the square for the Square Post Support. Use the temporary lines and OSNAP set to CENTER POINT to place the square on the center of the circle.
NOTES: 51
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 15A
JOB DUE DATE:________________________
ISOMETRIC DRAWING: SWIVEL ARM IRECTIONS:
D
• On a sheet of isometric graph paper, sketch an isometric drawing of the object shown below.
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.75.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• When finished, move on to Job 15b.
TIPS:
• Work from the center of the circles, constructing a “skeleton” framework of center points to work from.
• Remember to use the ISOCIRCLE command and F5 to rotate the axis of the circle.
• Use the COPY command to speed construction.
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 15B
JOB DUE DATE:________________________
ISOMETRIC DRAWING: PIPE SUPPORT IRECTIONS:
D
• On a sheet of isometric graph paper, sketch an isometric drawing of the object shown below.
• The dimensions for the drawing are as follows:
AB = 8.00
BC = 4.00
AD = 0.75
E = 3.875
F = ø2.75, depth = 2.25
G = ø1.125 DRILL
Slots = 1.00 wide
• First draw the object full size. Once finished, reduce the size using the SCALE command set to 0.75.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Only after you receive approval of the instructor, place both Job 15a (left) and 15b (right) on the same sheet and plot.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Work from the center of the circles, constructing a “skeleton” framework of center points to work from.
• Remember to use the ISOCIRCLE command and F5 to rotate the axis of the circle.
• Use the COPY command to speed construction.
• The depth of 2.25 for “F” is measured from the round surface of the cylinder to the base of the cylinder where it meets with
the large rectangle. It does NOT measure all the way to the back side of the rectangle.
• YOUR DRAWING WILL NOT LOOK EXACTLY LIKE THIS ONE. THE SLOTS WILL DIFFER SLIGHTLY.
Notes: 53
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 16
JOB DUE DATE:________________________
VACUUM FORMING & INJECTION MOLDING • Vacuum Forming is the process of heating up plastic sheet to make them soft and then shaping them over a mold by use of
vacuum suction. The machine has a heating element built in to one side and a vacuum on the other side with many small
holes to pull air downward under the plastic and mold forming your product.
Vacuum formed pieces are everywhere around you. The most obvious one is packaging. Think of the last cell phone you
bought or product that came in packaging from the store. It probably had clear plastic over it or sat cradled in protective
plastic. These are all made using a vacuum forming machine.
DIRECTIONS FOR VACUUM FORMING:
-First you clamp a sheet of plastic into the heating side and hold the heating button down for about 1-2 minutes depending
on the type of plastic and how hot the machine is.
-Once the plastic begins to droop down and is soft you will carefully with a fluid motion move the plastic carrier from the
heating side over to the vacuum side.
-When the plastic is just about to hit the mold on the vacuum side hold down the Vacuum button and firmly press the plastic sheet over the mold.
-You only need to hold the vacuum button for about 5-10 seconds typically.
Project:
Since this is your first attempt at this process we will be using premade molds for your parts. Find a part that you feel interests you and form the plastic over your mold to create your plastic part.
DIRECTIONS FOR INJECTION MOLDING:
-First align the mold with the center point, about 1/8” below nosel. Be sure to clamp tightly. You may need to use shims
under the mold to ensure mold is 1/8” below nosel.
-Plug in machine and turn ON with red switch. Utilizing temperature dial and temperature switch on left side of machine,
adjust dial to desired temperature as specified by bag of plastic pellets.
-Once material has melted to “transparent” form, pull down lever slowly with even pressure until lever stops, then hold firmly
for 5 seconds.
-Allow mold to cool for approximately for 15 seconds, then release mold from clamps. USE EXTREME CAUTION-MATERIAL WILL BE HOT!!
Notes: Pre-Engineering Graphics 1—Hinsdale Central High School
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UNIT 5
SECTIONAL VIEWS S
ometimes even three views or pictorial drawings of
an object don’t show all the surfaces that are needed to correctly understand how an object looks. When
additional views are needed, the drafts person can cut
into the object to show hidden details. In this unit students will learn the type of drawings used to accomplish
this task: Sectional Views.
When three views of an object still won’t reveal interior
details necessary, it is often helpful to draw the object as
though cut open. The process in mechanical drawing
for doing this is called Sectional Drawing. Sectional
drawings are used in many different ways to help explain visually what an object looks like in areas that cannot be seen or drawn easily.
The two types of pictorial sectional drawings used in this
unit are called full and half sectional views. In full sections, a straight “Cutting Plane Line” is passed through
the entire object, cutting it in half. In half sections, the
Cutting Plane Line is angled and cuts away one-quarter
of the object. Both of these types of sectional drawings
can be constructed in either Isometric or Oblique styles.
For greater information on sectional views, pages 253257 in Chapter 12. 55
Pre-Engineering Graphics 1—Hinsdale Central High School
SECTIONAL DRAWING
CUTTING PLANES AND CONSTRUCTION Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 17
JOB DUE DATE:________________________
ISOMETRIC DRAWINGS IN FULL SECTION
IRECTIONS:
D
• On a sheet of isometric graph paper, sketch each figure
shown at right as an isometric full section. Each grid
space shown equals one-quarter inch.
• On a standard title block document, divide the border
into four quadrants.
• Place each figure within the following quadrants:
Figure A in the upper left;
Figure B in the lower left;
Figure C in the upper right;
Figure D in the lower right.
• The scale for all of these objects should be 1:1. Draw
them at current size and place them in the correct
quadrant shown above.
• Use the HATCH command on the hatch layer to fill the
surfaces that were cut by the Cutting Plane Line with a
hatch pattern of your choice.
• Determine an appropriate hatch scale that shows the hatch
pattern correctly as discussed in the text.
• Only after you receive approval of the instructor, plot the
entire job.
• Tape your sketch to the CAD drawing and submit the job
for evaluation.
Notes: 57
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 18A & 18B
JOB DUE DATE:________________________
OBLIQUE HALF-SECTIONS: BEARING & END CUP Jobs
18a through 18d will be plotted on the same sheet of paper divided into four quadrants as done for previous jobs. Complete each
drawing in the sequence given, then once approved by your instructor, plot Jobs 18a-18d at the same time.
DIRECTIONS:
• On a sheet of graph paper, sketch an oblique half-section drawing of the objects shown below. Use the views given to construct the drawings.
• Draw each figure as a cabinet oblique (half depth), with 30º for the angle of depth.
• First draw each object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Use the HATCH command to fill the surfaces that were cut by the Cutting Plane Line with a hatch pattern of your choice.
• Determine an appropriate hatch scale that shows the hatch pattern correctly as discussed in the text.
• Divide the drawing area inside the border into four quadrants. Place the Bearing in the upper right and the End Cup in the
Lower right.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Move on to Job 18c.
TIPS:
• Work from the center line of each piece for best results.
• Remember that a half-section removes one-quarter of the object to show hidden details.
• Note that the end cup drill (hole) is set back from the outer .38 rim.
Notes:
Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 18C & 18D
JOB DUE DATE:________________________
OBLIQUE HALF-SECTIONS: SPOOL & CONE BEARING IRECTIONS:
D
• On a sheet of graph paper, sketch an oblique half-section drawing of the objects shown below. Use the views given to construct the drawings.
• Draw each figure as a cabinet oblique (half depth), with 45º for the angle of depth.
• First draw each object full size. Once finished, reduce the size using the SCALE command set to 0.5.
• Use the HATCH command to fill the surfaces that were cut by the Cutting Plane Line with a hatch pattern of your choice.
• Determine an appropriate hatch scale that shows the hatch pattern correctly as discussed in the text.
• Place the Spool in the upper left quadrant and the Cone Bearing in the lower left quadrant.
• Title in capital letters. Use the MTEXT command with the letter height set to .200.
• Center the drawing within the quadrant after it has been scaled.
• Only after you receive approval of the instructor, plot the entire job.
• Tape your sketches to the CAD drawing and submit the job for evaluation.
TIPS:
• Work from the center of the circles first.
 Remember that a half-section removes one-quarter of the object to show hidden details.
 Your HATCH must not be at the same angle as your Object lines. Change HATCH to 30 or 60 degrees when needed.
Notes: ***DRAW PART BELOW LOOKING AT ITS BOTTOOM SURFACE TO BETTER SHOW THE COUNTERBORE 59
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 19 (OPTIONAL)
INVENTOR ASSEMBLY
JOB DUE DATE:________________________
19 is a test of your Inventor skills. You are going to create a number of parts in Inventor, then use the Assembly feature to
Job
“attach” all of the parts together. If one part does not fit, you will need to go back and edit the part to the correct specifications. ALL
OF THE PARTS FIT PERFECTLY.
DIRECTIONS:
• In Inventor, model each part of the plane in a separate .IPT file.
• Save each file by it’s part name to your H: Drive.
• Your instructor will show you how to create an Assembly file in Inventor.
• Apply Constraints so that each part is appropriately attached. (Ex: Once the pins are placed through the wings and constrained, you cannot move them if you try and drag them with the mouse)
• Create three different dowels at the appropriate lengths (this you need to calculate).
• One dowel is 3/8” dia., another is 1/4” dia, and the third is a THREADED 3/8” dia dowel. Your instructor will show you
how to do threads in Inventor.
• Create a folder “lastname_Job 19”, copy all of your files into it and DROP the folder into the R: drive.
• Plot only the assembly drawing in a shaded, ISO view. Add materials if you would like.
TIPS:
• The thickness is 1/4” unless otherwise noted.
• There are two engines that fit into the wings. The engines hang under the wings.
• For the COCKPIT, draw the CLOSED one. The dowel is inserted 3/8” into the cockpit.
• You should have 10 files once completed.
Notes:
Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 19 CONTINUED (OPTIONAL)
INVENTOR ASSEMBLY
61
Pre-Engineering Graphics 1—Hinsdale Central High School
JOB 19 CONTINUED (OPTIONAL)
INVENTOR ASSEMBLY
Pre-Engineering Graphics 1—Hinsdale Central High School
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JOB 20
JOB DUE DATE:________________________
COVER PAGE IRECTIONS:
D
• Use the computer to design an attractive cover page for your drawing portfolio. The design is one of your choosing. Often
students take their logo and enlarge it so that it can serve as a good cover page design. Be as creative as possible, but the
following information must be included:
YOUR NAME
PRE-ENGINEERING GRAPHICS 1
DATE: Month Day, Year
• Plot the cover page on your choice of colored cover stock paper.
• After the plot is complete, you may use colored pencils, markers, etc.., to complete the cover page if not printed in color.
After you have completed all the required work for the course, arrange all work in numerical order from Job 1 to Job 19.
Any handouts, quizzes, or work exercises should also be saved and included in the booklet. Place these extra assignments in
the appropriate section of your portfolio so that it can be bound. Your instructor will direct you through completing this
process.
Notes:
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Pre-Engineering Graphics 1—Hinsdale Central High School
SUPPLEMENTAL PROBLEMS
JOB DUE DATE:________________________
DRAWING VIEWS IN ROTATION
IRECTIONS:
D
The directions for both Job 21 and 22 are the same with the exception
that Figure A is used for Job 21 and Figure B is used for Job 22.
• On standard graph paper, sketch an isometric drawing of the
appropriate figure show at right. Number and letter all corners as
demonstrated in class.
• Divide your paper into 4 equal sized areas.
• Sketch a normal 3-view drawing (front, top and right-side views)
of this figure in the lower left area leaving .5” between views.
Include the numbers and letters of all corners in each view.
• In the upper left area, re-draw the front view rotating it 30º. With
the front view rotated in a new position, project from all corners to
solve for the top view and project from all corners to solve for the
right side view. Include the numbers and letters of all corners in
each view.
• In the upper right area, re-draw the top view rotating it 45º. With
the top view rotated in a new position, project from all corners to
solve for the front and right side views. Include the numbers and
letters of all corners in each view.
• In the lower right area, re-draw the side view rotating it 30º. With
the side view rotated in a new position, project from all corners to
solve for the front and top views. Include the numbers and letters
of all corners in each view.
• After you receive approval from the instructor, begin your CAD
drawing based on the sketch you have just created. Do not place
numbers on the corners of the CAD drawing.
• Using the HATCH command, color a surface of your choice with
“solid fill” from the hatch icon. Color this surface in all views.
• After receiving approval from the instructor, plot your drawing.
• Tape your sketch to the CAD drawing and submit the job for
evaluation.
TIPS:
• Remember to project all corners and follow the numbers and
letters for each corner.
• Remember if a corner projects through a view, most of the time it
will be shown as a hidden line in the projected view. Pre-Engineering Graphics 1—Hinsdale Central High School
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