REPRESENTATION OF
SPRINGS
GEARS
AND OTHER ELEMENTS
SPRINGS
Compression springs
Tension springs
Torsion springs
Leaf springs
Cup springs
Spiral springs
Compression springs
Tension springs
Torsion springs
Leaf springs
Cup springs
Spiral springs
Different Gear Pairs
Terminology in gears
REPRESENTATION OF GEARS
As a fundamental principle, a gear is
represented (except in axial section) as a solid
part without teeth, but with the addition of the
pitch surface in a thin long chain line.
Teeth - Specify the teeth profile either by reference to
a standard or by a drawing to a suitable scale.
If it is essential to show one or two teeth on the
drawing itself draw them as thick continuous lines
Bevel
gear
Spiral
gear
Root
- If mating gears are represented, the direction of the teeth
should he shown on one gear only.
Assembly of gears
External gears
Assembly of internal gears
Engagement of pinion with rack
Engagement of bevel gears, axis inlet-section at any angle
Engagement of worm & wheel
CONVENTIONAL REPRESENTATION OF COMMON FEATURES
Title
Slotted
head
Radial ribs
Serrated
shaft
Actual
projection
convention
Title
Ratchet
&pinion
Bearing
Straight
knurling
Actual
projection
convention
Title
Diamond
knurling
Repeated
parts
Actual
projection
convention