instructions - future technologiesa1-tools technical data 5 2. a1-tools . 2.1. technical data ....

INSTRUCTIONS FOR USE

A1 & A2KNURLING 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,

increases the service life of the tools,

and prevents downtimes.

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.

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.

NOTE:

This Symbol refers to further information and provides additional information for using the Quick knurling tools.

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

Spiral knurl

RBL / RBR A/FL As required

Cross knurl

RKE A/KF 15°L + 15° R

Diamond knurl

RGE A/KF 2 x 90°

3

General Tool Construction

Tool definition

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

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.

Perfect results may be achieved with:

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

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.

4

A1-Tools Technical Data

5

2. A1-Tools 2.1 Technical Data

A1/KF Types of knurl Cross and diamond Working range Ø 3-50 mm Shaft dimension 10x16, 12x16 or 16x16 mm Knurl cutters Ø 14.5 mm

Cross 1 x 15°L and 1 x 15°R Diamond 2 x 90°

Pitches see page 40 Weight 0.3 kg

A1/FL Types of knurl Straight and spiral Working range Ø 3-50 mm Shaft dimension 10x16, 12x16 or 16x16 mm Knurl cutters Ø 14.5 mm

Straight 1 x 30°L / 30°R Spiral As required


10/1

2/1

6

35

36

115

16

80

36

10/1

2/16

26

32

16

106

80

34

A1-Tools Overview: Main Components

6

8

2

2

3

3

4

4

5

5

12

67 1

13

14

1

11

11

10

10

9

9

2.2 Overview: Main Components

Pos. Designation

1 Tool head 2 Countersunk screw 3 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

A1/FL

A1-Tools Tool Adjustment A1/KF

2.3 Tool Adjustment A1/KF

Preliminary work:

Clamp workpiece and turn Maximum out-of-roundness 0.03 mm

Step 1: Cutter selection 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" Diamond knurl:

2x 90° toothed knurl cutters

Step 2: Install knurl cutters

Clean the contact surface of bushing 5 and cutter holder 1.1.

Coat bushing 5 and the face ends as well as the hole of knurl cutter 4 with a little Molykote G paste

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

2 3 4 5 1.1

7


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.

a

-c

0

b

-b

c

-a

M

Pos. Application Shaft

0 conventional 10/12/16 a CNC 10 b CNC 12 c CNC 16 -a CNC 10 -b CNC 12 -c CNC 16

Adjustment:

Unscrew eccentric bolt 10

Adjust tool head 1 accordingly by way of spindle screw 11

Clamp eccentric bolt lightly

1

10

11

10

11

8


Step 4: Set diameter

Measure off workpiece diameter

Unscrew clamping segment 8 by two turns

Turn index disc 6 until the required diameter aligns with index point 7

Only clamp clamping segment 8 lightly for subsequent adjustment of cutter

8

6

7

Step 5: Clamp tool in tool holder

Step 6: Re-align turning centre

Carefully bring into contact with the workpiece

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

11

1010

11

9


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°.

Sequence:

Adjust index disc 6 slightly towards the next smaller diameter until the correct cutter setting is reached

Tighten clamping segment 8

8

6

Step 8: Start of knurl

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.

10


11

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.

NOTE: If the knurl is not accurate or is one-sided, then the knurling process may be repeated after correcting the tool.

Step 9: 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.

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

A1-Tools Optical Measurement A1/KF

2.4 Optical Measurement A1/KF

The tool may be optically measured on the pre-setting 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

Clamp eccentric bolt 10 lightly

4 5

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

x=0z=013

8

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 X+ Ø X+ Ø X+ 5 0 10 0.9 23 1.8 6 0.3 13 1.2 31 2.1 8 0.6 17 1.5 50 2.5

12

A1-Tools Tool Adjustment A1/FL

2.5 Tool Adjustment A1/FL

Preliminary work:


Step 1: Cutter selection Straight knurl - right-hand tool:

1x 30° right-hand spiral toothed knurl cutter Straight knurl - left-hand tool:

1x 30° left-hand spiral toothed knurl cutter

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.

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.






2 3 4 5 1.1

13


Step 3: Adjust turning centre




a

-c

0

b

-b

c

-a

M


0 conventional 10/12/16 a CNC 10 b CNC 12 c CNC 16 -a CNC 10 -b CNC 12 -c CNC 16

Adjustment: Unscrew eccentric bolt 10 Adjust tool head 1accordingly by way of spindle

screw 11 Clamp eccentric bolt again hand-tight

10 11

1

11

10

NOTE: Precision adjustment of the turning centre can only be carried out on the optical pre-setting device.

14





Sequence:

Correction is achieved by turning the tool slightly in the tool holder


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. 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

15


16


If the track generated does not run paraxially, this may be put right by correcting the two hexagonal socket head screws 12.

12b

12a

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

Step 7: Knurling




A1-Tools Optical Measurement A1/FL

2.6 Optical Measurement A1/FL


Unscrew eccentric bolt 10 and adjust the turning centre by means of the spindle screw 11

Clamp eccentric bolt 10 lightly again

4 5

11

10

Mount adjustment gauge 14 on tool holder 1.1 Precision adjust the turning centre under the


z=0x=0

14 1.12

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

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

16

15

Dimensions – adapter for long-turning lathes A1/KF

80

14

10/12/16

A1/FL

80

11,6

10/12/16

18

A2-Tools Technical Data

3. A2-Tools 3.1 Technical Data

A2/KF Types of knurl Cross and diamond Working range Ø 5-250 mm Shaft dimension 20x25 or 25x25 mm Knurl cutters Ø 21.5 mm

Cross 1 x 15°L and 1 x 15°R Diamond 2 x 90°


A2/FL Types of knurl Straight and spiral Working range Ø 5-250 mm Shaft dimension 20x25 or 25x25 mm Knurl cutters Ø 21.5 mm

Straight 1 x 30°L / 30°R Spiral As required


50 20/2

5

48

25

111

159

63

20/2

5

38

50

25

149

111

56 19

A2-Tools Overview: Main Components

20

8

52 3 4

13

2 3 4 5

14

1

10

10

11

9

67 1

11

10

10

9

12

A2/KF

A2/FL


Pos. Designation

1 Tool head 2 Countersunk screw 3 Washer 4 Knurl cutters 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

(A2/FL) 13 Adjustment gauge - A2/KF 14 Adjustment gauge - A2/FL


3.3 Tool Adjustment A2/KF

Preliminary work:


Step 1: Cutter selection 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" Diamond knurl:

2x 90° toothed knurl cutters






1.13 42 5

21


Step 3: Pre-adjust turning centre




-b

-a

0

a

b

M


0 conventional 20/25 a CNC 20 b CNC 25 -a CNC 20 -b CNC 25

Adjustment:

Unscrew eccentric bolt 10

Adjust tool head 1 accordingly by way of spindle screw 11

Clamp eccentric bolt lightly

10

11

1

11

10

10

22


Step 4: Set diameter

Measure off workpiece diameter

Unscrew clamping segment 8 by two turns

Turn index disc 6 until the required diameter aligns with index point 7

Only clamp clamping segment 8 lightly for subsequent adjustment of cutter

67

8


Step 6: Re-align turning centre

Carefully bring into contact with the workpiece

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

1111

10

10

23




Sequence:

Adjust index disc 6 slightly towards the next smaller diameter until the correct cutter setting is reached

Tighten clamping segment 8

8

6


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.

24


25




Step 9: Knurling


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

A2-Tools Optical Measurement A2/KF

3.4 Optical Measurement A2/KF


Unscrew eccentric bolt 10 and pre-set the turning centre by means of spindle screw 11

Clamp eccentric bolt 10 lightly

11

10

4 5

11

10

10

Push adjustment gauge 13 onto closed

clamping segment 8 Precision adjust the turning centre under the


x=0z=0

13

8

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 X+ Ø X+ Ø X+ 8 0 27 1.9 80 3.2

11 0.3 35 2.2 120 3.5 14 0.6 45 2.5 150 3.6 16 0.9 55 2.8 200 3.7 19 1.2 65 3.0 250 3.8

26


3.5 Tool Adjustment A2/FL

Preliminary work:


Step 1: Cutter selection Straight knurl - right-hand tool:

1x 30° right-hand spiral toothed knurl cutter Straight knurl - left-hand tool:

1x 30° left-hand spiral toothed knurl cutter

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.

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.






2 3 4 5 1.1

27


Step 3: Adjust turning centre




M

-b-b

-a-a

0

aa

bb


0 conventional 20/25 a CNC 20 b CNC 25 -a CNC 20 -b CNC 25

Adjustment: Unscrew eccentric bolt 10 Adjust tool head 1 accordingly by way of spindle

screw 11 Clamp eccentric bolt again hand-tight

11

10

10

10

11

1

NOTE: Precision adjustment of the turning centre can only be carried out on the optical pre-setting device.

28





Sequence:

Correction is achieved by turning the tool slightly in the tool holder


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. 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

29


30

If the track generated does not run paraxially, this may be put right by correcting the two hexagonal socket head screws 12.

12b12a

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

Step 7: Knurling




A2-Tools Optical Measurement A2/FL

3.6 Optical Measurement A2/FL


Unscrew eccentric bolt 10 and adjust the turning centre by means of the spindle screw 11

Clamp eccentric bolt lightly 10 again

4 5

11

10

10

Mount adjustment gauge 14 on tool holder 1.1 Precision adjust the turning centre under the


z=0x=0

2 14 1.1

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

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

7

KF FL

4.2 Technical Data

Coolant pressure: max. 8 bar

32

11

17

22

28

49

32

A1 A2

A1/A2

32

Coolant Unit A1/A2 Overview: Main Components


1

1

8

8

2

3

4

4

5

5

5

5

6

6

7

7

Pos. Description

1 Housing 2 Jet nozzle KF - 3 adjustable nozzles 3 Jet nozzle FL - flat nozzle 4 Gasket 5 Push-in connection 6 Blanking plug 7 Coolant hose 8 Cyl. head screw

KF

FL

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 hand-tight.

10

1

8

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.

5

5

6

7

34

Coolant Unit A1/A2 Clean the Coolant Unit

Step 3: Activate cooling system Activate the cooling system before commencing

knurling

ATTENTION: The coolant unit is designed for a max. pressure of 8 bar.

Step 4: Precision adjustment of ball nozzles on coolant unit KF 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

4.5 Clean the Coolant Unit Loosen coolant hose on tool holder

Unscrew and remove cyl. head screw and detach coolant unit

Press push-in connectors 5 slightly and detach coolant hose 7 as well as blanking plug 6

771

8

5

5

6

35

Coolant Unit A1/A2 Su

36

bsequent Machining of Shank A2

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.

Unlatch mounting of nozzle insert 2 via the

lateral slotted openings and pull out of housing 1 with gasket 4

1

2

2 4

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

Assemble remaining parts and re-attach coolant unit to shank

4.6 Subsequent Machining of Shank A2

1x threaded hole M4 1x slot with fit for alignment pin

1+ 0,1- 0,1

4 H

11

M4

6

4,5

33+0,1

0

12,5+0,05-0,05

Wear Parts

5. Wear Parts The fixing elements for the knurl cutters of the QUICK A-series tools are wear parts and must be replaced frequently.

1 2 3

P s. o Designation 1 Countersunk screw 2 Washer 3 Bushing

6. Knurling of Stepped Workpieces 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.

b

a

Distance b corresponds to the Ø of the knurl cutters

Ø 14.5 Ø 21.5 Ø 14.5 Ø 21.5

a b b a b b 1 1.3 2 5 2.8 4.5 2 1.8 2.6 6 3.1 4.7 3 2.2 3 7 5

4 2.6 3.8 8 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.

0,5 x t

t45°

Arrangement for cutters with bevel

Only one knurl cutter 4 with bevel may be used depending on the direction in which the workpiece rotates.

4

4

38

Troubleshooting

8. Troubleshooting A/KF Tools Knurl trailing spirally 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 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

Unevenly deep knurl track Re-align position of head using spindle

Seizing of knurl cutters on bushing (see A/FL)

A/FL Tools 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

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

Teeth of knurl cutters knocked off 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

Seizing of knurl cutters on bushing 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 Material: Powder metallurgy tool steel Heat treatment: Hardened to HRC 62-64 Models: Ground or ground + coated with Q-Dur

Dimensions and pitches 90°

t90°

30°15°

Ø Tooth pitch angle Pitches (t)

14.5 90° toothed 0.4/0.5/0.6/0.8/1.0/1.2 15°L/15°R toothed 0.4/0.5/0.6/0.8/1.0/1.2 30°L/30°R toothed 0.4/0.5/0.6/0.8/1.0/1.2

21.5 90° toothed 0.4/0.5/0.6/0.8/1.0/ 1.2/1.5/1.6/2.0

15°L/15°R toothed 0.4/0.5/0.6/0.8/1.0/ 1.2/1.5/1.6/2.0

30°L/30°R toothed 0.4/0.5/0.6/0.8/1.0/ 1.2/1.5/1.6/2.0

Order numbers and designation

Ident. no. Ø A Ø B C

271 14.5 5 3

272 21.5 8 5

Pos. Description

1 Production date MM/YY 2 Tooth pitch angle 3 Tooth pitch direction R (right) L (left) 4 Tooth pitch 5 Material 6 Tooth tip angle 7 Production process G (ground) / M (milled) 8 Coated with QDUR / TiCN / TIN

40

Reference Values for Feeds and Cutting Speeds

10. Reference Values for Feeds and Cutting Speeds

Workpiece Ø 3-12

Workpiece Ø 12-40

Workpiece Ø 40-250

Material Cutter Ø V m/min

s mm/rev

V m/min

s mm/rev

V m/min

s mm/rev

Steel up to 600 N/mm² 14.5 45 0.07-0.09 40 0.07-0.09 21.5 60 0.07-0.14 60 0.07-0.15 55 0.07-0.15

Steel up to 900 N/mm² 14.5 35 0.06-0.08 30 0.06-0.08 21.5 50 0.06-0.12 45 0.06-0.12 40 0.06-0.12

Stainless steels 14.5 30 0.06-0.08 28 0.06-0.08 21.5 40 0.06-0.12 35 0.06-0.12 32 0.06-0.12

Ms58 14.5 70 0.08-0.12 60 0.08-0.12 21.5 100 0.08-0.20 100 0.08-0.20 90 0.08-0.20

Ms60 14.5 60 0.06-0.10 60 0.06-0.10 21.5 90 0.07-0.15 90 0.07-0.15 80 0.07-0.15

41

Reference Values for Feeds and Cutting Speeds

42

Workpiece Ø 3-12

Workpiece Ø 12-40

Workpiece Ø 40-250

Material Cutter Ø V m/min

s mm/rev

V m/min

s mm/rev

V m/min

s mm/rev

Bronze 14.5 45 0.07-0.09 40 0.07-0.09 21.5 60 0.07-0.14 60 0.07-0.14 55 0.07-0.14

Aluminium 14.5 80 0.08-0.18 70 0.08-0.18 21.5 120 0.10-0.25 110 0.10-0.25 100 0.10-0.25

Grey cast iron 14.5 30 0.06-0.08 28 0.06-0.08 21.5 40 0.06-0.12 35 0.06-0.12 32 0.06-0.12

Cast steel 14.5 35 0.06-0.08 30 0.06-0.12 21.5 50 0.06-0.12 45 0.06-0.12 40 0.06-0.12

NOTE: Generally speaking the values applicable to aluminium are also valid for plastics. Test runs are imperative.

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.

QUICK Tooling GmbHBrunnenstraße 36

78554 Aldingen | Germany

Tel.: +49 7424 98198-0

Fax: +49 7424 98198-230

[email protected]

www.quick-tooling.com

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