INSTRUCTIONS
FOR USE
A1 & A2
KNURLING TOOLS
Contents
CONTENTS
1. General .............................................................. 2
1.1 Introduction................................................ 2
1.2 Tool Construction....................................... 3
2. A1-Tools ............................................................ 5
2.1 Technical Data........................................... 5
2.2 Overview: Main Components..................... 6
2.3 Tool Adjustment A1/KF .............................. 7
2.4 Optical Measurement A1/KF.................... 12
2.5 Tool Adjustment A1/FL............................. 13
2.6 Optical Measurement A1/FL .................... 17
2.7 Adapter for long-turning lathes ................ 18
3. A2-Tools .......................................................... 19
3.1 Technical Data......................................... 19
3.2 Overview: Main Components................... 20
3.3 Tool Adjustment A2/KF ............................ 21
3.4 Optical Measurement A2/KF.................... 26
3.5 Tool Adjustment A2/FL............................. 27
3.6 Optical Measurement A2/FL .................... 31
4. Coolant Unit A1/A2..........................................32
4.1 General ....................................................32
4.2 Technical Data .........................................32
4.3 Overview: Main Components ...................33
4.4 Assembly/Starting up ...............................34
4.5 Clean the Coolant Unit .............................35
4.6 Subsequent Machining of Shank A2 ........36
5. Wear Parts .......................................................37
6. Knurling of Stepped Workpieces ..................37
7. Knurl Cutters with Bevel ................................38
8. Troubleshooting..............................................39
9. Dimensions and Pitches Available................40
10. Reference Values for Feeds and
Cutting Speeds..............................................41
1
General
Introduction
1. General
1.1 Introduction
Please read through the Instructions for Use
carefully before using the Quick knurl cutting tools!
The instructions have been written for operators
with qualified training in the field of machining and
cutting.
Compliance with the Instructions for Use
 increases reliability in use,
Symbols in these instructions
ATTENTION:
This Symbol warns that operating
procedures carried out without paying
attention to the measures specified may
lead to damage to the tool and/or the
machine tool.
 increases the service life of the tools,
NOTE:
 and prevents downtimes.
This Symbol refers to further information
and provides additional information for
using the Quick knurling tools.
We reserve the right to make alterations to the
technical details of the tools by comparison with the
information and illustrations contained in these
Instructions for Use.
Text markups:
 This symbol identifies lists
 This symbol identifies an action sequence
2
General
Tool Construction
1.2 Tool Construction
A-series tools are flexible in use and may be
employed on all lathes from the conventional to
CNC-controlled dual-spindle lathes, optionally as a
left-hand or right-hand tool, in front or behind the
turning centre.
The tools have a cutting action, are free-cutting and
it is not possible to make them adopt a specific
speed ratio to the diameter of the workpiece by
means of sustained forcing. As a result the number
of teeth of the knurl produced may differ. The
difference is approx. ± 1-3 teeth depending on the
pitch.
Type of knurl
DIN 82
Tool
Knurl cutters
Straight knurl
RAA
A/FL
30°L /30° R
RBL / RBR
A/FL
As required
A/KF
15°L + 15° R
A/KF
2 x 90°
Spiral knurl
Cross knurl
Diamond knurl
RKE
RGE
3
General
Tool Construction
Tool definition
Perfect results may be achieved with:
Definition of the tool as left- or right-handed is
determined by the position of the knurl cutters when
the tool is viewed from the front in the clamped
position.
left
right
left
right
 Correct adjustment
 Closely following the instructions regarding the
start of the knurling process
 Appropriate feed and cutting speed
 Selection of the correct tool size. Quick knurl
cutter tools with large dimensioned knurl cutters,
e.g. Ø 21.5 mm instead of Ø 14.5, have a longer
service life
Clamping
Clamping of the holder on the shaft is effected by
means of an eccentric chuck. The surface clamping
generated as a result reduces the vibrations arising
due to machining and increases the service life of
the knurl cutters.
Shafts and bodies may be individually assembled
easily and without much effort by the customer
himself.
4
NOTE:
It is imperative to ensure an abundant
supply of coolant or cutting oil directly
onto the knurl cutters to ensure perfect
cooling and lubrication of the knurl cutters.
A1-Tools
Technical Data
2. A1-Tools
2.1 Technical Data
A1/FL
Types of knurl
Working range
Shaft dimension
Knurl cutters
Straight
Spiral
Straight and spiral
Ø 3-50 mm
10x16, 12x16 or 16x16 mm
Ø 14.5 mm
1 x 30°L / 30°R
As required
Pitches
Weight
see page 40
0.3 kg
10/12/16
16
36
Cross and diamond
Ø 3-50 mm
10x16, 12x16 or 16x16 mm
Ø 14.5 mm
1 x 15°L and 1 x 15°R
2 x 90°
see page 40
0.3 kg
36
35
80
115
16
10/12/16
32
26
34
A1/KF
Types of knurl
Working range
Shaft dimension
Knurl cutters
Cross
Diamond
Pitches
Weight
80
106
5
A1-Tools
Overview: Main Components
2.2 Overview: Main Components
Pos. Designation
1
Tool head
2
3
Countersunk screw
Washer
4
Knurl cutter
5
Bushing
6
Index disc (diameter adjustment)
7
Index point
8
Clamping segment
9
Shaft
10
Eccentric bolt
11
Spindle screw
12
Hexagonal socket head screws - tool correction
(A1/FL)
13
Adjustment gauge - A1/KF
14
Adjustment gauge - A1/FL
A1/KF
7
2
3
4
1
10
11
9
13
8
2
3
4
5
A1/FL
1
10
11
14
9
12
6
6
5
A1-Tools
Tool Adjustment A1/KF
2.3 Tool Adjustment A1/KF
Preliminary work:
Step 2: Install knurl cutters
 Clamp workpiece and turn
Maximum out-of-roundness 0.03 mm
 Clean the contact surface of bushing 5 and
cutter holder 1.1.
Step 1: Cutter selection
 Coat bushing 5 and the face ends as well as the
hole of knurl cutter 4 with a little Molykote G
paste
Cross knurl:
 1x 15° left-hand spiral toothed knurl cutter on
cutter holder "L"
 1x 15° right-hand spiral toothed knurl cutter on
cutter holder "R"
 With knurl cutter 4 and washer 3 pushed on,
insert bushing 5 into the cutter holder
 Screw in countersunk screw 2 and only tighten
enough to allow knurl cutter 4 to rotate free of
play
Diamond knurl:
 2x 90° toothed knurl cutters
2
3
4
5
1.1
7
A1-Tools
Tool Adjustment A1/KF
Step 3: Pre-adjust turning centre
For centring of the tool, the mark M on the shaft
must be aligned with the mark on the head.
 The mark in the middle of the head should be
selected for use in conventional machines.
 The outer marks should be selected for use in
CNC machines depending on the shaft
dimensions.
Pos.
0
a
b
c
-a
-b
-c
Application
conventional
CNC
CNC
CNC
CNC
CNC
CNC
Shaft
10/12/16
10
12
16
10
12
16
Adjustment:
 Unscrew eccentric bolt 10
c
b
a
0
-a
-b
-c
 Adjust tool head 1 accordingly by way of spindle
screw 11
 Clamp eccentric bolt lightly
M
1
10
10
11
11
8
A1-Tools
Tool Adjustment A1/KF
Step 5: Clamp tool in tool holder
Step 4: Set diameter
 Measure off workpiece diameter
 Unscrew clamping segment 8 by two turns
Step 6: Re-align turning centre
 Turn index disc 6 until the required diameter
aligns with index point 7
 Carefully bring into contact with the workpiece
 Only clamp clamping segment 8 lightly for
subsequent adjustment of cutter
7
6
 Both cutters must be in contact simultaneously.
Precision adjustment is carried out using spindle
screw 11
 Tighten eccentric bolt 10 hand-tight when
alignment is finished
10
10
11
11
8
9
A1-Tools
Tool Adjustment A1/KF
Step 7: Adjust cutter
The ideal position of the knurling cutters is when
they lie parallel on the workpiece and still cut very
slightly, i.e. the cutting edge of the cutters can be
pressed in somewhat deeper (approx. 1-2°). In the
case of materials which are hard to machine, the
knurling cutters may be inclined up to max. 3-4°.
6
8
Step 8: Start of knurl
Sequence:
 Adjust index disc 6 slightly towards the next
smaller diameter until the correct cutter setting is
reached
 Tighten clamping segment 8
10
The start of the knurl should be in a width no greater
than 1.5 mm. With this width now move the tool to
the full depth without interruption. The feed on
infeeding should be approx. 0.05 — 0.1 mm.
The knurling depth corresponds to the pitch of the
knurling cutter being used, e.g. 1.0 mm pitch
requires 1.0 mm infeed with reference to the
diameter. The depth is measured from the knurling
cutter's point of contact with the workpiece.
A1-Tools
Tool Adjustment A1/KF
After an idle time of 2-3 seconds, the workpiece is
knurled by using the longitudinal feed. The surface
deformation of the workpiece cannot be determined
exactly as this is different from material to material.
The knurling depth, however, should be sufficient to
ensure that the knurl is only just sharp.
NOTE:
Note that the protective bevel at the
beginning of the workpiece may not be
applied until knurling is complete.
The coarser the pitch, the smaller the feed. Feed
and cutting speed have no effect on the knurl pitch.
max 1,5 mm
Step 9: Knurling
NOTE:
If the knurl is not accurate or is onesided, then the knurling process may be
repeated after correcting the tool.
ATTENTION:
Under no circumstances knurl with
longitudinal feed into the face edge of
the workpiece. Starting the knurl within
the workpiece can be done only in
certain circumstances.
11
A1-Tools
Optical Measurement A1/KF
2.4 Optical Measurement A1/KF
The tool may be optically measured on the presetting device using adjustment gauge 13 supplied.
 Dismantle knurl cutter 4 and bushing 5
 Unscrew eccentric bolt 10 and pre-set the
turning centre by means of spindle screw 11
8
13
z=0
x=0
 Clamp eccentric bolt 10 lightly
4
5
10
11
 Push adjustment gauge 13 onto closed
clamping segment 8
 Precision adjust the turning centre under the
pre-setting device, clamp eccentric bolt 10
hand-tight and determine the X and Z values
12
The measured Z value is the start of the knurl not
the collision measurement. The measured X value is
adopted without a correction value for a workpiece
diameter of 5 mm.
The radius values shown in the table must be
added to the X values depending on the workpiece
diameter. With this measurement the knurl cutters
are positioned approximately 0.2-0.3 mm above the
diameter to be knurled. Precise adjustment of the
tool must be carried out on the machine.
Ø
5
6
8
X+
0
0.3
0.6
Ø
10
13
17
X+
0.9
1.2
1.5
Ø
23
31
50
X+
1.8
2.1
2.5
A1-Tools
Tool Adjustment A1/FL
2.5 Tool Adjustment A1/FL
Preliminary work:
Step 2: Install knurl cutters
 Clamp workpiece and turn
Maximum out-of-roundness 0.03 mm
 Clean the contact surface of bushing 5 and
cutter holder 1.1.
Step 1: Cutter selection
Straight knurl - right-hand tool:
 Coat bushing 5 and the face ends as well as the
hole of knurl cutter 4 with a little Molykote G
paste
 1x 30° right-hand spiral toothed knurl cutter
Straight knurl - left-hand tool:
 With knurl cutter 4 and washer 3 pushed on,
insert bushing 5 into the cutter holder
 1x 30° left-hand spiral toothed knurl cutter
 Screw in countersunk screw 2 and only tighten
enough to allow knurl cutter 4 to rotate free of
play
NOTE:
Right-hand tool requires the workpiece
to rotate in a clockwise direction.
Left-hand tool requires the workpiece to
rotate in an anti-clockwise direction.
2
3
4
5
1.1
Spiral knurl:
Knurl cutters are to be mounted with 15°, 30° or 90°
spirals depending on the pitch of the spiral desired
on the workpiece. It is advisable due to the large
number of possible variations to consult your dealer
or the manufacturer.
13
A1-Tools
Tool Adjustment A1/FL
Step 3: Adjust turning centre
For centring of the tool, the mark M on the shaft
must be aligned with the mark on the head.
 The mark in the middle of the head should be
selected for use in conventional machines.
 The outer marks should be selected for use in
CNC machines depending on the shaft
dimensions.
c
b
a
0
-a
-b
-c
Pos.
0
a
b
c
-a
-b
-c
Application
conventional
CNC
CNC
CNC
CNC
CNC
CNC
Shaft
10/12/16
10
12
16
10
12
16
Adjustment:
 Unscrew eccentric bolt 10
 Adjust tool head 1accordingly by way of spindle
screw 11
 Clamp eccentric bolt again hand-tight
M
1
11
10
10
11
NOTE:
Precision adjustment of the turning
centre can only be carried out on the
optical pre-setting device.
14
A1-Tools
Tool Adjustment A1/FL
Step 4: Clamp tool in tool holder
Step 6: Start of knurl
Step 5: Adjust cutter
The start of the knurl should be in a width no greater
than 1.5 mm. With this width now move the tool to
the full depth without interruption. The feed on
infeeding should be approx. 0.05-0.1 mm.
The ideal position of the knurling cutters is when
they lie parallel on the workpiece and still cut very
slightly, i.e. the cutting edge of the cutters can be
pressed in somewhat deeper (approx. 1-2°). In the
case of materials which are hard to machine, the
knurling cutters may be inclined up to max. 3-4°.
The knurling depth corresponds to the pitch of the
knurling cutter being used, e.g. 1.0 mm pitch
requires 1.0 mm infeed with reference to the
diameter. The depth is measured from the knurling
cutter's point of contact with the workpiece.
After an idle time of 2-3 seconds, the workpiece is
knurled by using the longitudinal feed. The surface
deformation of the workpiece cannot be determined
exactly as this is different from material to material.
The knurling depth, however, should be sufficient to
ensure that the knurl is only just sharp.
max 1,5 mm
Sequence:
 Correction is achieved by turning the tool slightly
in the tool holder
15
A1-Tools
Tool Adjustment A1/FL
Step 7: Knurling
ATTENTION:
Under no circumstances knurl with
longitudinal feed into the face edge of
the workpiece. Starting the knurl within
the workpiece can be done only in
certain circumstances.
If the track generated does not run paraxially, this
may be put right by correcting the two hexagonal
socket head screws 12.
 When adjusting by way of screw 12a, first loosen
screw 12b and vice versa
 Tighten the opposing screw again hand-tight
when adjustment is complete
NOTE:
Note that the protective bevel at the
beginning of the workpiece may not be
applied until knurling is complete.
The coarser the pitch, the smaller the feed. Feed
and cutting speed have no effect on the knurl pitch.
12b
12a
NOTE:
If the knurl is not accurate or is one-sided,
then the knurling process may be
repeated after correcting the tool.
16
A1-Tools
Optical Measurement A1/FL
2.6 Optical Measurement A1/FL
The tool may be optically measured on the presetting device using adjustment gauge 14 supplied.
 Dismantle knurl cutter 4 and bushing 5
 Unscrew eccentric bolt 10 and adjust the turning
centre by means of the spindle screw 11
 Clamp eccentric bolt 10 lightly again
4
 Mount adjustment gauge 14 on tool holder 1.1
 Precision adjust the turning centre under the
pre-setting device, clamp eccentric bolt 10
hand-tight and determine the X and Z values
2
14 1.1
5
z=0
x=0
10
11
The measured Z value is the start of the knurl not
the collision measurement. If the measured X value
is programmed, the knurl cutter is positioned
approximately 0.2-0.3 mm above the diameter to be
knurled and precise adjustment of the tool must be
carried out on the machine.
17
A1-Tools
Adapter for long-turning lathes
2.7 Adapter for long-turning lathes
Dimensions – adapter for long-turning lathes
A1/KF
14
A1 adapter for long turning lathes 15 may be
mounted on appropriate A1 shaft 9 simply by
means of the two screws 16.
Retention in the machine is by means of the
adapter. As a result the tool is aligned completely
flush with the knurl cutters.
9
80
15
10/12/16
11,6
A1/FL
16
80
18
10/12/16
A2-Tools
Technical Data
3. A2-Tools
3.1 Technical Data
20/25
25
50
63
Cross and diamond
Ø 5-250 mm
20x25 or 25x25 mm
Ø 21.5 mm
1 x 15°L and 1 x 15°R
2 x 90°
see page 40
1.2 kg
111
159
25
Straight and spiral
Ø 5-250 mm
20x25 or 25x25 mm
Ø 21.5 mm
1 x 30°L / 30°R
As required
see page 40
1.0 kg
20/25
38
50
A2/FL
Types of knurl
Working range
Shaft dimension
Knurl cutters
Straight
Spiral
Pitches
Weight
48
56
A2/KF
Types of knurl
Working range
Shaft dimension
Knurl cutters
Cross
Diamond
Pitches
Weight
111
149
19
A2-Tools
Overview: Main Components
3.2 Overview: Main Components
A2/KF
Pos. Designation
7
1
Tool head
2
3
Countersunk screw
Washer
4
Knurl cutters
11
5
Bushing
10
6
Index disc (diameter adjustment)
7
Index point
8
Clamping segment
9
Shaft
10
Eccentric bolt
11
Spindle screw
12
Hexagonal socket head screws - tool correction
(A2/FL)
13
Adjustment gauge - A2/KF
14
Adjustment gauge - A2/FL
2
3
4
10
5
9
13
2
8
3
4
5
A2/FL
1
11
10
10
9
12
14
20
6
1
A2-Tools
Tool Adjustment A2/KF
3.3 Tool Adjustment A2/KF
Preliminary work:
Step 2: Install knurl cutters
 Clamp workpiece and turn
Maximum out-of-roundness 0.03 mm
 Clean the contact surface of bushing 5 and
cutter holder 1.1.
Step 1: Cutter selection
 Coat bushing 5 and the face ends as well as the
hole of knurl cutter 4 with a little Molykote G
paste
Cross knurl:
 1x 15° left-hand spiral toothed knurl cutter on
cutter holder "L"
 1x 15° right-hand spiral toothed knurl cutter on
cutter holder "R"
 With knurl cutter 4 and washer 3 pushed on,
insert bushing 5 into the cutter holder
 Screw in countersunk screw 2 and only tighten
enough to allow knurl cutter 4 to rotate free of
play
Diamond knurl:
 2x 90° toothed knurl cutters
2
3
4
5
1.1
21
A2-Tools
Tool Adjustment A2/KF
Step 3: Pre-adjust turning centre
For centring of the tool, the mark M on the shaft
must be aligned with the mark on the head.
 The mark in the middle of the head should be
selected for use in conventional machines.
 The outer marks should be selected for use in
CNC machines depending on the shaft
dimensions.
Pos.
0
a
b
-a
-b
Application
conventional
CNC
CNC
CNC
CNC
Shaft
20/25
20
25
20
25
Adjustment:
 Unscrew eccentric bolt 10
 Adjust tool head 1 accordingly by way of spindle
screw 11
 Clamp eccentric bolt lightly
b
a
0
-a
-b
M
1
10
11
11
10
10
22
A2-Tools
Tool Adjustment A2/KF
Step 4: Set diameter
Step 5: Clamp tool in tool holder
 Measure off workpiece diameter
 Unscrew clamping segment 8 by two turns
Step 6: Re-align turning centre
 Turn index disc 6 until the required diameter
aligns with index point 7
 Carefully bring into contact with the workpiece
 Only clamp clamping segment 8 lightly for
subsequent adjustment of cutter
7
6
 Both cutters must be in contact simultaneously.
Precision adjustment is carried out using spindle
screw 11
 Tighten eccentric bolts 10 hand-tight when
alignment is finished
10
11
8
11
10
10
23
A2-Tools
Tool Adjustment A2/KF
Step 7: Adjust cutter
The ideal position of the knurling cutters is when
they lie parallel on the workpiece and still cut very
slightly, i.e. the cutting edge of the cutters can be
pressed in somewhat deeper (approx. 1-2°). In the
case of materials which are hard to machine, the
knurling cutters may be inclined up to max. 3-4°.
6
8
Step 8: Start of knurl
Sequence:
 Adjust index disc 6 slightly towards the next
smaller diameter until the correct cutter setting is
reached
 Tighten clamping segment 8
24
The start of the knurl should be in a width no greater
than 1.5 mm. With this width now move the tool to
the full depth without interruption. The feed on
infeeding should be approx. 0.05-0.1 mm.
The knurling depth corresponds to the pitch of the
knurling cutter being used, e.g. 1.0 mm pitch
requires 1.0 mm infeed with reference to the
diameter. The depth is measured from the knurling
cutter's point of contact with the workpiece.
A2-Tools
Tool Adjustment A2/KF
After an idle time of 2-3 seconds, the workpiece is
knurled by using the longitudinal feed. The surface
deformation of the workpiece cannot be determined
exactly as this is different from material to material.
The knurling depth, however, should be sufficient to
ensure that the knurl is only just sharp.
max 1,5 mm
NOTE:
Note that the protective bevel at the
beginning of the workpiece may not be
applied until knurling is complete.
The coarser the pitch, the smaller the feed. Feed
and cutting speed have no effect on the knurl pitch.
Step 9: Knurling
NOTE:
If the knurl is not accurate or is onesided, then the knurling process may be
repeated after correcting the tool.
ATTENTION:
Under no circumstances knurl with
longitudinal feed into the face edge of
the workpiece. Starting the knurl within
the workpiece can be done only in
certain circumstances.
25
A2-Tools
Optical Measurement A2/KF
3.4 Optical Measurement A2/KF
The tool may be optically measured on the presetting device using adjustment gauge 13 supplied.
8
 Dismantle knurl cutter 4 and bushing 5
z=0
 Unscrew eccentric bolt 10 and pre-set the
turning centre by means of spindle screw 11
x=0
13
 Clamp eccentric bolt 10 lightly
10
11
4
5
10
11
10
 Push adjustment gauge 13 onto closed
clamping segment 8
 Precision adjust the turning centre under the
pre-setting device, clamp eccentric bolt 10
hand-tight and determine the X and Z values
26
The measured Z value is the start of the knurl not the
collision measurement. The measured X value is
adopted without a correction value for a workpiece
diameter of 8 mm The radius values shown in the table
must be added to the X values depending on the
workpiece diameter. With this measurement the knurl
cutters are positioned approximately 0.2 — 0.3 mm
above the diameter to be knurled. Precise adjustment
of the tool must be carried out on the machine.
Ø
8
11
14
16
19
X+
0
0.3
0.6
0.9
1.2
Ø
27
35
45
55
65
X+
1.9
2.2
2.5
2.8
3.0
Ø
80
120
150
200
250
X+
3.2
3.5
3.6
3.7
3.8
A2-Tools
Tool Adjustment A2/FL
3.5 Tool Adjustment A2/FL
Preliminary work:
Step 2: Install knurl cutters
 Clamp workpiece and turn
Maximum out-of-roundness 0.03 mm
 Clean the contact surface of bushing 5 and
cutter holder 1.1.
Step 1: Cutter selection
Straight knurl - right-hand tool:
 Coat bushing 5 and the face ends as well as the
hole of knurl cutter 4 with a little Molykote G
paste
 1x 30° right-hand spiral toothed knurl cutter
Straight knurl - left-hand tool:
 With knurl cutter 4 and washer 3 pushed on,
insert bushing 5 into the cutter holder
 1x 30° left-hand spiral toothed knurl cutter
 Screw in countersunk screw 2 and only tighten
enough to allow knurl cutter 4 to rotate free of
play
NOTE:
Right-hand tool requires the workpiece
to rotate in a clockwise direction.
Left-hand tool requires the workpiece to
rotate in an anti-clockwise direction.
2
3
4
5
1.1
Spiral knurl:
Knurl cutters are to be mounted with 15°, 30° or 90°
spirals depending on the pitch of the spiral desired
on the workpiece. It is advisable due to the large
number of possible variations to consult your dealer
or the manufacturer.
27
A2-Tools
Tool Adjustment A2/FL
Step 3: Adjust turning centre
For centring of the tool, the mark M on the shaft
must be aligned with the mark on the head.
 The mark in the middle of the head should be
selected for use in conventional machines.
 The outer marks should be selected for use in
CNC machines depending on the shaft
dimensions.
b
a
0
-a
-b
M
Pos.
0
a
b
-a
-b
Application
conventional
CNC
CNC
CNC
CNC
Shaft
20/25
20
25
20
25
Adjustment:
 Unscrew eccentric bolt 10
 Adjust tool head 1 accordingly by way of spindle
screw 11
 Clamp eccentric bolt again hand-tight
1
11
10
10
11
10
NOTE:
Precision adjustment of the turning
centre can only be carried out on the
optical pre-setting device.
28
A2-Tools
Tool Adjustment A2/FL
Step 4: Clamp tool in tool holder
Step 6: Start of knurl
Step 5: Adjust cutter
The start of the knurl should be in a width no greater
than 1.5 mm. With this width now move the tool to
the full depth without interruption. The feed on
infeeding should be approx. 0.05-0.1 mm.
The ideal position of the knurling cutters is when
they lie parallel on the workpiece and still cut very
slightly, i.e. the cutting edge of the cutters can be
pressed in somewhat deeper (approx. 1-2°). In the
case of materials which are hard to machine, the
knurling cutters may be inclined up to max. 3-4°.
The knurling depth corresponds to the pitch of the
knurling cutter being used, e.g. 1.0 mm pitch
requires 1.0 mm infeed with reference to the
diameter. The depth is measured from the knurling
cutter's point of contact with the workpiece.
After an idle time of 2-3 seconds, the workpiece is
knurled by using the longitudinal feed. The surface
deformation of the workpiece cannot be determined
exactly as this is different from material to material.
The knurling depth, however, should be sufficient to
ensure that the knurl is only just sharp.
max 1,5 mm
Sequence:
 Correction is achieved by turning the tool slightly
in the tool holder
29
A2-Tools
Tool Adjustment A2/FL
Step 7: Knurling
ATTENTION:
Under no circumstances knurl with
longitudinal feed into the face edge of
the workpiece. Starting the knurl within
the workpiece can be done only in
certain circumstances.
NOTE:
Note that the protective bevel at the
beginning of the workpiece may not be
applied until knurling is complete.
The coarser the pitch, the smaller the feed. Feed
and cutting speed have no effect on the knurl pitch.
If the track generated does not run paraxially, this
may be put right by correcting the two hexagonal
socket head screws 12.
 When adjusting by way of screw 12a, first loosen
screw 12b and vice versa
 Tighten the opposing screw again hand-tight
when adjustment is complete
12a
12b
NOTE:
If the knurl is not accurate or is onesided, then the knurling process may be
repeated after correcting the tool.
30
A2-Tools
Optical Measurement A2/FL
3.6 Optical Measurement A2/FL
The tool may be optically measured on the presetting device using adjustment gauge 14 supplied.
 Dismantle knurl cutter 4 and bushing 5
 Unscrew eccentric bolt 10 and adjust the turning
centre by means of the spindle screw 11
 Clamp eccentric bolt lightly 10 again
4
 Mount adjustment gauge 14 on tool holder 1.1
 Precision adjust the turning centre under the
pre-setting device, clamp eccentric bolt 10
hand-tight and determine the X and Z values
2
14
1.1
5
z=0
x=0
10
11
10
The measured Z value is the start of the knurl not
the collision measurement. If the measured X value
is programmed, the knurl cutter is positioned
approximately 0.2-0.3 mm above the diameter to be
knurled and precise adjustment of the tool must be
carried out on the machine.
31
Coolant Unit A1/A2
General
4. Coolant Unit A1/A2
4.1 General
4.2 Technical Data
This innovative cooling system enables targeted
cooling and lubrication of the cutters or workpieces
and thus increases the service life of the tools. Easy
assembly and cleaning are further distinguishing
features of the system.
There are two versions available for A series
knurling tools:
 Coolant unit with three adjustable ball nozzles for
A/KF tools
 Coolant unit with a flat nozzle for A/FL tools
Coolant pressure: max. 8 bar
A2
32
32
17
11
A1
49
28
7
KF
32
FL
22
A1/A2
Coolant Unit A1/A2
Overview: Main Components
4.3 Overview: Main Components
Pos. Description
1
Housing
2
3
Jet nozzle KF - 3 adjustable nozzles
Jet nozzle FL - flat nozzle
4
Gasket
5
Push-in connection
6
Blanking plug
7
Coolant hose
8
Cyl. head screw
KF
6
5
1
8
5
7
6
5
1
8
5
7
4
2
FL
4
3
33
Coolant Unit A1/A2
Assembly/Starting up
4.4 Assembly/Starting up
NOTE:
The illustration for the following work
steps show the tool A1/KF with coolant
unit KF. The same manner of proceeding
also applies for the other tools of the A
series.
Step 1: Assembly
 Position coolant unit 1 with alignment pin on
shank 10.
 Screw in cyl. head screw 8 and tighten handtight.
Step 2: Connect coolant supply
 Clamp tool in tool holder
 Press top push-in connector 5 in slightly and
feed in hose 7 until limit stop is reached.
 Route hose 7 with corresponding bending radius
to connection on tool holder, cut to length as
necessary and connect.
 Press push-in connector 5 in slightly at second
coolant connection of coolant unit and insert
blanking plug 6 until limit stop is reached.
7
10
5
1
5
8
34
6
Coolant Unit A1/A2
Clean the Coolant Unit
4.5 Clean the Coolant Unit
Step 3: Activate cooling system
 Loosen coolant hose on tool holder
 Activate the cooling system before commencing
knurling
 Unscrew and remove cyl. head screw and
detach coolant unit
ATTENTION:
The coolant unit is designed for a max.
pressure of 8 bar.
 Press push-in connectors 5 slightly and detach
coolant hose 7 as well as blanking plug 6
1
7
Step 4:
Precision adjustment of ball nozzles on
coolant unit KF
5
 To ensure the best possible cooling for A/KF
tools, direct the two outer nozzles onto the knurl
cutters and the middle nozzle onto the
workpiece
5
8
6
35
Coolant Unit A1/A2
Subsequent Machining of Shank A2
4.6 Subsequent Machining of Shank A2
 Unlatch mounting of nozzle insert 2 via the
lateral slotted openings and pull out of housing 1
with gasket 4
2
4
1
2
No receiving holes were provided in models A2/KF
and A2/FL prior to introduction of the coolant unit.
The shanks have to be machined subsequently to
retrofit the coolant unit.
 1x threaded hole M4
 1x slot with fit for alignment pin
0
33 +0,1
6
4,5
12,5 +0,05
-0,05
 Clean all parts in soap solution and rinse with
clear water to remove microchips.
 Re-insert nozzle insert 2 with gasket 4 into
housing 1 and fix with snap closure
36
1 +- 0,1
0,1
M4
4 H11
 Assemble remaining parts and re-attach coolant
unit to shank
Wear Parts
5. Wear Parts
6. Knurling of Stepped Workpieces
The fixing elements for the knurl cutters of the
QUICK A-series tools are wear parts and must be
replaced frequently.
It must be noted that with all QUICK knurl cutting
tools it is not possible to knurl right up to a shoulder
due to the inclined position of the knurl cutters.
Please refer to the table for dimensions.
1
2
3
a
b
Distance b corresponds to the Ø of the knurl cutters
Pos.
1
2
3
Designation
Countersunk screw
Washer
Bushing
Ø 14.5
Ø 21.5
a
1
2
3
b
1.3
1.8
2.2
b
2
2.6
3
a
5
6
7
4
2.6
3.8
8
Ø 14.5
Ø 21.5
b
2.8
3.1
b
4.5
4.7
5
5.3
37
Knurl Cutters with Bevel
7. Knurl Cutters with Bevel
A knurl cutter's teeth may break off when knurling
"hard" materials.
It is possible to increase the knurl cutter's service
life by cutting a 45° bevel. This is only applicable for
the KF models.
Only one knurl cutter 4 with bevel may be used
depending on the direction in which the workpiece
rotates.
4
0,5 x t
45°
Arrangement for cutters with bevel
t
4
38
Troubleshooting
8. Troubleshooting
A/KF Tools
A/FL Tools
Knurl trailing spirally
Knurl trailing spirally




 Correct position of head using precision adjustment
screws
 Look at start of knurl
 Look at knurling depth
 Tool tilted sideways -> check position
 Clearance of tool too positive or too negative
Look at start of knurl
Look at knurling depth
Tool tilted sideways -> check position
Clearance of tool too positive or too negative
Overlapping of the knurl (double knurl)
 Incorrect adjustment of diameter
 Approach to knurl depth too slow as a result of which too
little guidance of knurl cutters in track
 Look at start of knurl
Teeth of knurl cutters knocked off
Overlapping of the knurl (double knurl)
 Approach to knurl depth too slow as a result of which too
little guidance of knurl cutters in track
 Look at start of knurl
 Bevel knurl cutters with hard materials
 Knurl cutter has been overloaded too much feed, cutting
depth too great
 Incorrect adjustment of diameter
 Fixing screws of knurl cutters loose
 Look at adjustment of cutters
Teeth of knurl cutters knocked off
Unevenly deep knurl track
Seizing of knurl cutters on bushing
 Re-align position of head using spindle
Seizing of knurl cutters on bushing (see A/FL)
 Knurl cutter has been overloaded feed too great, cutting
depth too great
 Fixing screws of knurl cutters loose
 Look at direction of rotation
 Look at adjustment of cutters
 Reduce cutting speed
 Use Molykote paste
 Coolant jet directly onto the knurl cutter
39
Dimensions and Pitches Available
9. Dimensions and Pitches Available
Technical Description
Order numbers and designation
Material: Powder metallurgy tool steel
Heat treatment: Hardened to HRC 62-64
Models: Ground or ground + coated with Q-Dur
Dimensions and pitches
Ident. no.
ØA
ØB
C
271
14.5
5
3
272
21.5
8
5
90°
90°
Ø
15°
Tooth pitch angle
14.5 90° toothed
15°L/15°R toothed
30°L/30°R toothed
21.5 90° toothed
15°L/15°R toothed
30°L/30°R toothed
40
30°
t
Pitches (t)
0.4/0.5/0.6/0.8/1.0/1.2
0.4/0.5/0.6/0.8/1.0/1.2
0.4/0.5/0.6/0.8/1.0/1.2
0.4/0.5/0.6/0.8/1.0/
1.2/1.5/1.6/2.0
0.4/0.5/0.6/0.8/1.0/
1.2/1.5/1.6/2.0
0.4/0.5/0.6/0.8/1.0/
1.2/1.5/1.6/2.0
Pos. Description
1
2
3
4
5
6
7
8
Production date MM/YY
Tooth pitch angle
Tooth pitch direction R (right) L (left)
Tooth pitch
Material
Tooth tip angle
Production process G (ground) / M (milled)
Coated with QDUR / TiCN / TIN
Reference Values for Feeds and Cutting Speeds
10.
Reference Values for Feeds and Cutting Speeds
Workpiece
Ø 3-12
Material
Cutter Ø
V
s
m/min
mm/rev
Steel up to 600 N/mm²
14.5
45
0.07-0.09
21.5
60
0.07-0.14
Steel up to 900 N/mm²
14.5
35
0.06-0.08
21.5
50
0.06-0.12
Stainless steels
14.5
30
0.06-0.08
21.5
40
0.06-0.12
Ms58
Ms60
14.5
21.5
14.5
21.5
70
100
60
90
0.08-0.12
0.08-0.20
0.06-0.10
0.07-0.15
Workpiece
Ø 12-40
V
s
m/min
mm/rev
40
0.07-0.09
60
0.07-0.15
30
45
28
35
0.06-0.08
0.06-0.12
0.06-0.08
0.06-0.12
60
100
60
90
0.08-0.12
0.08-0.20
0.06-0.10
0.07-0.15
Workpiece
Ø 40-250
V
s
m/min
mm/rev
55
0.07-0.15
40
0.06-0.12
32
0.06-0.12
90
0.08-0.20
80
0.07-0.15
41
Reference Values for Feeds and Cutting Speeds
Workpiece
Ø 3-12
Material
Cutter Ø
V
s
m/min
mm/rev
Bronze
14.5
45
0.07-0.09
21.5
60
0.07-0.14
Aluminium
Grey cast iron
Cast steel
Workpiece
Ø 12-40
V
s
m/min
mm/rev
40
0.07-0.09
60
0.07-0.14
14.5
21.5
14.5
21.5
80
120
30
40
0.08-0.18
0.10-0.25
0.06-0.08
0.06-0.12
70
110
28
35
0.08-0.18
0.10-0.25
0.06-0.08
0.06-0.12
14.5
21.5
35
50
0.06-0.08
0.06-0.12
30
45
0.06-0.12
0.06-0.12
NOTE:
Generally speaking the values applicable to aluminium
are also valid for plastics. Test runs are imperative.
42
Workpiece
Ø 40-250
V
s
m/min
mm/rev
55
0.07-0.14
100
0.10-0.25
32
0.06-0.12
40
0.06-0.12
QUICK Tooling GmbH
Brunnenstraße 36
78554 Aldingen | Germany
Tel.:+49 7424 98198-0
Fax: +49 7424 98198-230
[email protected]
www.quick-tooling.com
04/2014 1. Edition. Technical details are subject to change. Printing errors excepted. © No part of these document may be
copied or disclosed for any purposes without the written approval of QUICK Tooling GmbH. All rights reserved.