GRINDING FIXTURE

OPERATING INSTRUCTIONS

7

29) ( 15

14

27

4

12

1. SwivelBasePlate 13.TensionLever 25.TensionLever2 .

Bolts 14.S/-lpportFingerRod 26.IndexPlateClamping3.

Scale 15.Work'Spindle Device4.

MountingPlate16.TensionLever 27.SupportFinger5.

Nut 17.WorkPieceSpindle Stopper6.

Drawbar Stopper28.Electromagnet7 .

KnurledGrip 18.Micrometerfor 29.MicrometeratAxial8.

WorkPiece CrossAdjustment Stop'

Spindle

Taper 19.CrossSlide 30.SwivelPlatefor9 .

ScaleAdjustment 20.IndexPin SupportFingerPlate

21 .MicroSwitch 31 .SupportFinger10.

ClampingDevice22.MicrometerDevice Adapter11.

SupportFinger23.Scale 32.Knob12.

TensionLever 24.QuickAdjustment 33.SupportDevice

34.ScaleforSupportFinger 35.

TensionLever

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HawemaGmbH0·78647 Trossingen

Kondensator 47mF/40V

Feinsicherung 15mm 3.15A flink

Betriebsleuchte (im Hauptschalter eingebaut)R~lais 24V/DC 4*Um Schrack ZG 450 024

Zeitrelais (rUckfallver~0g~rnd) Schiele 24V DC 0.1-10sStromstoBrelais KLbcKNER-~jbLLER FASS 20-24SL~u~rrolle Magnet 24VDC/IA

IJlJ,-~xi.erungNagnet 24VDC/0. 95AlliJuptschalter 2-pol. Ein wi t. Leuchte

Kipphebelschalter 4-pol. UrnKippheb~lschal ter 2-pol. UMKipjlll~l>elschalter2-pol. UNFui3LUS ter Narq uart I-pol. UUI

Handtaster Klbckn~r-Mbller RD-ll/KC/I

Mikroschalter I-pol. UNTransformator 2*115V/20VAC 120VAGleichrichter 5A

Diode IN4006 6A

Klemmleiste im Schaltkasten

Huchse fUr Fufitaster 3-pol.Buchse fUr Handtaster 3-pol •

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Manstab 1

Zust. An derung Datum IName

Datum~ NameBearb. 1-"!.3.03. r.) Jt /It/AGepr.

Norm

Betriebsmittelliste

I

Blatt

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SChalterbezeichnungen des UFS 155------------------------------------------------------------------

in der folgenden Bedienungsanleitung werden dieSchalter wie folgt abgekurzt:

Indexierung

Steuerrolle

Autornatik

Manuell

K 2

K 5

KS/K2 "OFF"

An den Ausgangsbuchsen "Indexierung" und "Steuerrollekann wahlweise der Handtaster oder der FuBtasterangeschlossen werden.'

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Hawema GmbH Dolum: 21.01.5578647 Trossingen I3earb: .Jh./?. beDy. I

1tHand70s1er HikroschaUer

Hand Swihh Micro Swi/ch

4

Indexierun,Inde-x Pin

V2

2

UFS 155 Stromlaufplan

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B

ELECTRICAL CONTROL BOX

''-../"

On/Off

0/1

Rheostat

Receptaclesfor Foot andHand Switches

Power suplly

220/110 AC24 V DC

Red/active Power

Green/activeM2

Green/activeM 1

Control Roller

Automatic/Manual

Time Lag Relay

Index pin

Foot SII'Jitch Hand Switch

INDEX

Introduction

Mounting to Tool & Cutter GrinderElectrical Installation

Mounting the support fInger adaptor

Adjusting the support fmger

Changing the index plate

Clamping the tools

Length adjustment

Cross adjustment

Radial quick adjustment

Radial micro adjustment

Switching of the index pin (20)

Indexing without spiral mechanism

Indexing with spiral mechanism

Clearance angle grinding on the O.D. with the fmger

Rake angel grinding on the O.D. with spiral mechanism

Clearance angel grinding on O.D with spiral mechanism

Rake angle grinding on the end of the tool

Clearance angle grinding on the end of the tool

Axial relief grinding without cam device

Grinding with controlled slippage

Helix angle chart

Cam device (Step drills)

Mounting· the taper -tool attachmentElectronic device

Maintenance and service

Adjusting the control roller - Sketch

Adjusting the control roller

Adjusting the micro switch (21)

Paragraph

1.0

1.1

2.0- 2.2

3.0- 3.4

4.1

4.2

4.3

4.4

5.0- 5.2

6.0- 6.5

7.0- 7.5

8.0- 8.14

9.0- 9.14

10.0-10.14

11.0-11.8

12.0-12.7

13.0-13.9

14.0-14.6

15.0

16.0-16.6

17.0-17.5

18.0

19.0-19.4

20.0

20.0-20.22

21.0-21.6

Page12

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3

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4

5

5

5

6

6

6

6

6

7

8

9

10

10

11

11

12

13

15

16

17

18

19

19

Introduction

This manual is written for the operator of the Universal Spiral Grinding Device UFS 155.

The manufacturer is not responsible for damages that may occur due to non compliance with thismanual.

The manufacturer is continuously improving the UFS 155. It is therefore possible that this manual maynot be totally complete. Please contact the manufacturer if further assistance is necessary.

All technical specifications are subject to change without notice.

Periodical cleaning

The only cleaning required are the surfaces of the grinding device. Simply wipe off with brush or rag,use oil if necessary.

Warning:

Do not use compressed air to clean. Beware of dangerous chemical solution not suitable to apply tometal and high precision instruments.

1

Mounting the spiral grinding device on a tool & cutter grinder

The fIxture can be mounted on any conventional tool and cutter grinder. The grinding wheel spindlemust be adjustable for height. The grinding machine table must be adjustable in length and must besecured with positive stops on each end. The table should also be secured from tilting sideways.The most suitable machines are the ones fItted with a cross roller table.

Usable machines: Cincinnati - KO.Lee - Hybco - Seneca Falls - Saacke UW I-II - Schuette - Deckel- Jungner - Walter - and many others.

The fIxture is mounted on the machine table using conventional bolts (2). Keys are used to align thefIxture with the machine. Using the swivel base plate (1) the fIxture can be swiveled 360 degrees,whereby the degrees can be read directly ofTthe scale (3) on the mounting plate (4). The swivel plateis locked into position with the nut (5) using a 22 rom wrench. The machine table must be lockedaxially to prevent tilting.

2

Electrical Installation

1. The e1ectrical box is supplied by either 220V AC or 110V AC respectively - The fixture ishooked up to the 24V DC cable.

2. The power on/off switch is located on top of the box indicated by a red light..

If the green light M 1 is on - the spiral magnet is activated.If the green light M 2 is on - the index magnet is activated.With the rotating switch of the rheostat the pressure of the control roller is adjusted. Highernumbers = more pressure for bigger tools, lower number = less pressure for smaller tools.

4. With the toggle switches on the side K5JK2 the microswitch (21) on the fIxture is activated.With the K5JK2 on "ON"the control roller (M1) and the index pin (M2) is switched in sequencewith the micro switch (21). The timing of the index pin can be regulated with a time relaybetween 0.5 - 10 seconds. The relay is found in the electrical box. Also in this position the footand hand switch do not operate.If K5JK2 is switched to "OFF' the control roller (M1) and the index pin (M2) can only beoperated with the hand or foot switch.

5. The receptacles 1\2 and K5 are for the hand or foot switch respectively. The function of thehand- or foot switch can be reversed with the toggle switch 1\2 and K5. The hand- or footswitch can be plugged into either receptacle.

1.0 Mounting the support finger (31)

With fmger supportWithout fmger support

The support fInger is mounted onto the Universal spiral grinding device using an allen wrench.The adaptor must rest upon the precise ground round stop. This assures exact repeatabilitywhen mounting and demounting. ~.~~~.- .

In the fmger support (31) insert the spindle (14). With the groove in the spindle (14) and thetension lever (16) the fmger (11) is always center with the tool. If the spindle (14) is taken off,the support casting should be covered with the enclosed plastic covers to prevent any damagesto the ball bearings.

The support fmger device can be mounted on either side of the unit.

3

Pas. 1

Ll Aqjustingthe finger (11)A rod which is approximately 1/2" in diameter that has been ground halfway to the center,is chucked into the spindle taper and lined up horizontally to the machine table. Thereafterthe fmger is adjusted to the center of the ground gauge. Set the axial stopper of the fmgerassembly. In order to check repeatability, swing the fmger 180 degrees and index the gaugeby 180 degrees ..

-------- ......••. --------.

Pas. 22.0 Changing the index plate

With index plate andclamping piece

Without index plate

2.1 For a fast and errorless indexing we recommend to use index plates with the same index

configuration as ~~?l. l.~," 1.1., ~- - I

4

2.2 To change the index plate loosen the index plate clamping piece (26) with a spanner wrenchand screw it off the workpiece spindle (15). The index plate then can be exchanged by handpulling it off the spindle (15).

3.0 Clamping the tool

3.1 Work piece spindle adaptor: ISO/NST 40 or Morse Taper 5.

3.2 Cutters with arbor holes are mounted on suitable shell mill holders and are tightened by handusing the knurled grip (7) on the drawbar (6). End mills with straight shanks are chucked inISO/NST 40 or MT 5 collet or in regular end mill holders and tightened using the knurledgrip (7) on the drawbar (6). End mills with tapered shanks NST 40 or MT 5 are directlymounted in the work piece spindle taper (8) and are tightened using the drawbar (6).

3.3 End mills with Morse tapers 4-3-2-1 have to be mounted on suitable mill sleeves.(DIN 6363-6463)MT-l/ MT-2/ MT-3/ MT-4/ MT-5/ NST 40

3.4 Several bolts are available for the drawbar (6): M6 - MI0 - M12 - M20 - 5/8-11 inch, aswell as specially threaded bolts. The drawbar (6) is adjustable in length with the knob (32)to fit various holding devices.

4.0 Infeed

4.1 The axial infeed is performed with the workpiece spindle (15) and is set with the stop (17) andthe micrometer (29).

Stop with micrometer

4.2 The cross feed movement is controlled with the micrometer screw (18) which is held in positionwith a loaded spring. The total cross movement is 10mm or .394".

Micrometer for the cross feed

5

4.3 The radial quick adjustment is done by opening the lever (25). The degrees can be read directlyoff the scale (23).

4.4 The radial micro adjustment is done by turning the knurled screws (22). The degrees can beread directly off the scale (23).

Radial Quick adjustment Radial micro adjustment

IMPORTANT: If the radial infeed is adjusted while the index pin (20) is not engaged, it is necessaryto re-index prior to grinding in order to reposition the workpiece spindle (15) correctly.

5.0 Switching the Control Roller and the Indexpin (20)

6.1 During the setup of the tool the control roller (M1) and the index pin (0) areelectromagnetically activated with the foot- or the hand switch respectively. The toggle switchK5/K2 is switched to the ·OFF" position.

5.2 When grinding begins, the toggle switch K5/K2 is switched to ·ON". The control roller (M1)and the indexpin (M2) is then controlled automatically with the micro switch (21). Theswitching is done in sequence.

6.0 Indexing without using the spiral device

6.1 Switch K.5/K2 to "OFF". Lift control roller.6.2 Pull the workpiece spindle (15) toward the back and turn to the desired index position.6.3 Lock (M2/1) index position with the index pin (20) (operated with either hand- or foot switch).6.4 To facilitate indexing, set and secure the work spindle stopper (17) while locked into the index

hole.6.5 Execute grinding with the machine table. (Adjust stoppers on the machine table)

7.0 Indexing using the spiral device

7.1 Switch K.5IK2 to "ON".7.2 The workpiece spindle (15) is pulled to the back activating the micro limit switch (21) which

lifts the control roller off the workpiece spindle (15) electromagnetically.7.3 Now turn the workpiece spindle to the desired index position.7.4 Pull the workpiece spindle again back to activate the micro switch (21). At this time the index

pin (20) is lowered into the index holes and the control roller is pressing onto the workpiecespindle (15) again. After the preset time of 0.5 - 10 seconds is passed the index pin (20) islifted automatically and the grinding can begin.

7.5 If the micro switch (21) is disabled by switching K.5IK2 to "OFF" the indexing must be donemanually in the following sequence;Lift control roller M I/O - turn workpiece spindle to next index position· lock index pin (20)M 2/1 - lower control roller M 1/1 - lift index pin (20) M 2/0.

6

8.0 Grinding the 0.0. of the tool using the support finger

8.1 Main power switch "OFF".

8.2 Adjust the desired relief angle by using the scale (34) and secure with the tension lever (35).

8.3 Place the support fmger (11) approximately .020" behind the cutting edge and secure with thetension lever (12).

8.4 Set the support fmger (11) 90 degree to the tool and secure with tension lever (13).

8.5 Push the support fmger rod (14) far enough toward the front (add some space needed to index)so that the work spindle (15) can be pulled over the entire cutting length. Lock position of thesupport fmger rod (14) with tension lever (16) and stopper (27).

8.6 Adjust the work piece spindle stopper (17) so that the cutter tooth remains on the finger (11)by approximately .040" - .080"when the work piece spindle (15) is extended.

8.7 Move the center of the fmger (11) to the grinding wheel's point of application. Secure machinetable against shifting. ---- -

8.8 Loosen the micrometer (18) at the cross roller support (19) and adjust the stroke length toapproximately .120" (3 rom).

8.9 Set the rotation of the grinding wheel Oeftor right respectively) against the fmger (11) so thatthe grinding wheel pressure forces the cutter against the finger.

8.10 Press the fIxture away from the grinding wheel using the cross slide (19) and maintain thisposition. Feed the work spindle (15) forward until stopped by stopper (17) and set the cuttertooth onto the support fmger (11).

8.11 Release the cross slide (19) against the micrometer stop (18) and pull the cutter tooth axiallyover the support fmger (11) to the back.

8.12 Repeat operation for every cutter tooth.

8.13 The grinding feed is adjusted with the micrometer (18).

8.14 The grinding operation for the second relief angle is identical to the fIrst clearance angle.

7

9.0 Grinding the rake angle with the spiral device (Fluting)

9.1 Lower control roller Kl/1; pull out index pin K2/0.9.2 Approximate setup of the spiral according to the chart (see page 12) using the scale adjustment

plate (9).9.3 Precise setup of the spiral is achieved by using a dial indicator set up in the· flute face. One

hand is constantly stroking the workpiece spindle (15) back and forth while the other hand isturning the scale adjustment plate (9) simultaneously until a spiral run out of not more than0.02 rom or 0.00078" is obtained over the entire cutting length .

9.4 Prevent the scale adjustment plate (9) from turning by using the clamping device (10).9.5 The rake angle is ground using the hollow side of a tapered dish grinding wheeL9.6 The desired helix angle is set with the grinding wheel head - but if not possible can be set with

the turn plate (1) or a combination of the two. Add approximately 1 degree to prevent doublecutting. Clamp grinding machine table at the proper position.

9.7 Switch K5/K2 to "OFF".9.8 With the spindle (15) free and the tool chucked, rotate the workpiece spindle (15) and adjust

the height and the cross feed of the machine. Positioned the tool so that the grinding wheeltouches on the cutter tooth equally from edge to bottom.

9.9 At this position lower the control roller M 1/1.9.10 Pull the workpiece spindle (15) all the way back to the stop.9.11 With the quick adjustment (24) opened, insert the index pin (20) into the index plate and clamp

the quick adjustment with the tension lever (25).9.12 In this position (Index pin still inserted) the scale of the index clamping device (26) is adjusted

to the zero mark.9.13 Switch K5/K2 to "ON".9.14 Now begin grinding. Not to alter the rake angle on the tool, the infeed is performed radially

by turning the knurled screws on the micrometer device (22). The grinding wheel wear iscorrected with the machine saddle.

Calculation of the setup angle on the UPS 155

Diameter x IItg = ---------------- + approx. 1 degree

Lead (mmfinches)

Diameter x IIlead

tg

8

10.0 Grinding 0.0. clearance angles with the spiral device

10.110.2

10.3

10.4

10.5

10.6

10.7

10.810.910.l010.11

10.1210.13

10.14

Lower control roller M 1/1; pull out index pin M 2/0. K5/K2 "OFF"Approximate set up of the spiral according to the chart (see page 12) using the scaleadjustment plate (9).Precise setup of the spiral is achieved by using a dial indicator set up in the flute face. Onehand is constantly stroking the workpiece spindle (15) back and forth while the other hand isturning the scale adjustment plate (9) simultaneously until a spiral run out of not more than0.02 mID or 0.00078" is obtained over the entire cutting length .Prevent the scale adjustment plate (9) from turning by using the clamping device (10).

The relief angle is ground using a cylindrical or a tapered cup grinding wheeL The fIXture isturned approximately 1 degree toward the grinding wheel using the rotating base plate (1) toavoid double cutting on longer tools.Lift control roller M 1/0. Time the tool to the point of application on the grinding wheel usinga height gauge (or the support fmger) and rotating the workpiece spindle.At this position lower the control roller M 1/1 and pull back the workpiece spindle (15) all theway back to the stop.Loosen the quick adjustment (24) with the lever (25).Insert the index pin (20) into the index plate.Move scale on the index plate clamping device (26) to the zero mark. Lift control roller M 1/0.In this position (Index pin (20) still inserted) choose the desired clearance angle with the scale(23) and clamp with tension lever (25).Activate micro switch (21) with toggle switch K51K2 set on "ON".Now grinding begins. The grinding feed is accomplished with the grinding machine saddle orwith the micrometer (18) of the cross support.For the secondary clearance angle the quick adjustment device (24) is opened with the lever (25)and the angle is set with the scale (23). Lock the new position with lever (25). Now you mustindex again to reposition the cutting tool.

\- ..

9

11.0 Grinding the rake angle on the end of the tool

ILl Lift off the control roller M 1/0; insert index pin M2/1. Adjust the spindle stop (17).

11.2 Switch K5/K2 to "OFF"11.3 Set axial stop (17).11.4 The Fixture is rotated to the desired rake angle using the scale on the base plate (1).11.5 The cutting edge is lined up level with the machine table and ground with the hollow side of

a tapered dish grinding wheel.lLfi The grinding movement is performed with the machine table.11.7 The grinding depth is adjusted using the machine table stopper of the grinding machine.11.8 The feed of the grinding wheel is executed by using the machine saddle.

12.0 Grinding the relief angle on the end of the tool

12.1 Lift the control roller M 1/0; insert the index pin M 2/1; set up the spindle stopper (17).12.2 Line up the cutting edge of the cutter parallel to the grinding machine table with the quick

adjustment (24).12.~ Rotate the fIXture to 89 degrees on the scale (3) of the base plate (1) and tighten.12.4 Cutters are ground using a cylindrical or tapered cup grinding wheel.12.5 Tilt the grinding wheel to the desired relief angle and adjust the height to the correct grinding

position using the height adjustment on the machine. Primary relief angle is 6 - 8 degrees,Secondary relief angle is approximately 15 degrees.

12.6 The grinding feed is executed with the grinding machine table.12.7 The infeed of the grinding wheel is performed with the machine saddle.

13.0 Grinding axial relief angle on single or multi fluted taperedtools, without additional cam(countersink, tap, sheet metal drill, step drill)

13.1 Lower the control roller MIll; Insert the index pin (20) M 2/1. Switch K5/K2 "OFF".13.2 Grind with the periphery of a dressed grinding wheel.13.3 Position the grinding wheel to the tool center (Center height 175 mm I 6.89")13.4 Set correct taper angle with rotating base plate (1)1a.5 Set the scale adjustment plate (9) to 89 degrees 30 min. and clamp with the tension lever (10).13.6 Index is positioned between the teeth.13.7 Position the machine table to the stop. Pull the index pin (20) M 2/0 and relief the fIrst cutting

edge. If adjustment is necessary after the fIrst grind, move the scale adjustment plate (9)accordingly.

13.8 The infeed of the grinding wheel is executed by using the machine saddle.13.9 Pull the machine table back. Index and repeat this operation until all flutes are done.

3 flutes countersink 90 deg.Setting of the scaleadjustment plate (9)approx. 89 deg. 30 min.

TapSetting of the scaleadjustment plate (9)approx. 87 deg.

1~.0 Grinding with controlled slippage on roughing end mills

14.1 Set up grinding wheel into the rake angle.14..2 The radial infeed during grinding is executed by generating a slippage between the control roller

and the work spindle.14.3 The amount of slippage is adjustable with the rheostat at the electrical box. For larger diameter

tools apply more pressure to the workpiece spindle and apply less for smaller tools.14.4 On a right spiral for example, the workpiece spindle (15) is turned to the right and back

pressure is applied slightly. This procedure is generating a radial infeed.14.5 Start grinding from the index position. The strokes are counted e.g. 5 or 10 per tooth. In this

manner every tooth is ground equally, starting from its index position.14.6 After all teeth have been ground according to that procedure, index the workpiece spindle (15).

The acquired gap between tooth and grinding wheel is compensated radially with the microadjustment (22). The cutter is now ground without slippage into the exact index.

11

15.0 Conversion Chart for setting up helix angle on the scale (9)

(calculation based on the work spindle diameter of 50 mm)Deg. Inch/R

mm/RDeg. Inch/Rmm/RDeg. Inch/Rmm/R------------------

---------------------------------------

0---- -..--3010.713272.1603.57190.7

1 354.29189993110.291261.4613.42987.1

, 2 177.0874498329.898251.4623.28783.5

3 117.9922997339.524241.9633.15080.0

488.4252246349.169232.9643.01676.6

570.6691795358.831224.3652.88673.3

6

58.8581495368.512216.2662.75269.97

50.3541279378.209208.5672.62666.78

44.0161118387.917201.1682.50063.59

39.055992397.638194.0692.37460.310

35.079891407.370187.2702.25257.2

11

31.811808417.114180.7712.13054.112

29.094739426.870174.5722.00851.013

26.772680436.634168.5731.89048.014

24.803630446.406162.7741.77245.015

23.071586456.185157.1751.65742.1

16

21.575548465.972151.7761.54339.217

20.236514475.768146.5771.42936.318

19.035483.5485.567141.4781.31533.419

17.953456495.378136.6791.20130.520

16.988431.5505.189131.8801.09127.7

21

16.102409515.008127.2810.98024.922

15.315389524.831122.7820.87022.123

14.567370534.661118.4830.76019.324

13.898353544.492114.1840.65016.525

13.268337554.331110.0850.54113.75

26

12.677322564.173106.0860.43311.027

12.138308.3574.016102.0870.3258.2528

11.630295.4583.86698.2880.2175.529

11.157283.4593.71794.4890.1082.7590

0.0000.0

Formula to calculate exact setting if necessary: metric

inches

50 mm x 3.1416

1.9685" x 3.1416-- ..--------------

---- .•.------- ....----

lead of tool (mm)lead of tool (in.)

= Tg of work spindle = Setting of scale (9)For lead an tg calculation see on page 8.12

16.0 Axial relieving attachment for step drills (optional)

16.1 Mounting and operatingthe ~ttpYing device

To mOWltthe device insert 3 index pins into the index holes spaced 120 degrees apart.

16.2 Slide the device from the back, over the workpiece spindle (15) Wltil the index pins are flushwith the plane of the spindle guide. Clamp the device with the allen screw M6.By repositioning the pins the index can be changed to 1-2-3-4-6indexes.

Indexing Device

16.3 Mounting and operating the adjustablecaIn

The earn is mOWltedonto the work spindle and clamped with the M6 allen screw.

r

I

Adjustable Carn

To adjust the earn there are two allen screws M6 where as one is at the circumference of theearn and marked with O. This screw is turned all the way in against the stop, whereas the allenscrew on the opposite side should be loosened. At this position there is no pitch noticeable. Now

13

the screw at the zero mark is turned away from the stop and the opposite screw turned inagainst its stop. One revolution with the screw marked 0 equals a lead of .157" (4 rom) perrevolution on the cam, whereas the cam is producing a 180 deg. right-hand and a 180 deg.left-hand helix. The highest point on the cam is marked with a pointer. To grind a right-handspiral the pointer is positioned to the right of the index pin on the indexing device. To grinda left-hand spiral the pointer is positioned to the left of the index pin. With the adjustable cawno linear helix can be produced.

16..( MOlmtiol!. grinding and operating the clamping device for individual cams

The raw cam is inserted into the clamping device and locked with the M6 allen screw.

Clamping device with cam Grinding the cam

16.5 To grind the cam demount the index device (26) off the workpiece spindle (15), mount theclamping device instead and lock with the allen screw M6. Now dial in your desired lead anglewith the scale (9).To determine the helix angle easier, set up a dial indicator to the face of the cam.By advancing the workpiece spindle (15) one revolution the lead is indicated on the dial.The flat side of the earn must be ground rectangularly and will produce a linear helix angle inopposition to the adjustable cam.

Individual earn with index

14

Grinding step drills

16.6 To grind a tool the cam is mounted at the end of the workpiece spindle (15) and clamped withthe allen screw M6. The earn is followed over the index pins on the indexing device.A separate cam must be ground to produce either a left or a right-hand spiral.

17.0 Mounting the tapered tool attachment

17.1 Swing the universal grinding device perpendicular to the grinding machine table and unscrewthe support (33).

17.2

17.3

17.4

17.5

Replace with the support for the taper attachment and swing fIXtureback on the machine table.With the new support plate, a slot is provided to position the adaptor for the sin bar. Tightenscrew.

The bearing is mounted onto the workpiece spindle (15) and by turning the eccentric, lockedinto position. Slightly tighten safety screw in the eccentric without (Iamag;ng the workpiecespindle.

Open the micrometer (18) of the cross roller support far enough so that the bearing is touchingthe sine bar during the entire cutting length.

In order to achieve a precision taper it is recommended to check the sine bar and the spindle(15) with a dial indicator. If necessary line up the new support plate.

15

19.0 Service and Maintenance

In order for the Universal Spiral Grinding System to work properly, please follow theinstructions below:

19.1 When the Device is mounted on and removed from the base machine, the cross roller slidesmust be locked by setting the micrometer (18) to the zero position.

19.2 The workpiece spindle (15) must be secured from any movement with the spindle stopper (17).A unlocked spindle may cause damage to the micro limit switch (21).

19.3 Neither the tension ring (26) for the index plate nor the drawbar should be loosened while theindex pin is inserted. The index pin can be damaged if too much side pressure is executed. Thiscould result in indexing errors.

19.4 For absolute smooth operation of the workpiece spindle, a few drops of light spindle oil shouldbe applied daily to the two lip seals.

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20.0 Diagram for control roller and scale adjustment

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20.0 Adjustment of the control roller (See Diagram on page 18)

20.10

20.19

2p.20

20.212p.22

20.1120.1220.13

Lock the scale plate (6) with the tension lever (4).Loosen the hexagonal socket screw (1).Loosen the tension lever (4) and the screw (3).Place the tension lever (4) and tension piece (5) aside.Remove scale plate (6) and washer (2).Loosen all four hexagonal socket screws (7) and remove the head plate (8).Loosen the locking screw (10) in the counter nut (9) and unscrew with spanner wrench.Loosen the locking screw (12) in the lower counter nut (13).With the spanner wrench, turn the counter nut (13) slightly to the right on the control rollshaft (19) - the pressure between the control roll and the workpiece spindle should beincreasing.Important: If the counter nut (13) is turned too far to the right, the pressure will start todecrease. In that case turn counter nut (13) to the left. Now begin turning to the right againto find the highest pressure setting.To test the pressure, the slots (11) of the control roller shaft must be parallel to the workpiecespindle then turn the spindle by hand.If the pressure is satisfactory, begin assembly.Tighten the locking screw (12) in the counter nut (13) so that counter nut (13) cannot move.Turn the top counter nut (9) by hand onto the lower counter nut (13). Then back off thecounter nut (9) one half turn. In this position tighten the counter nut (9) with the locking screw(10).Screw the head plate (8) on using the four socket screws (7).Mount the scale plate (6) using the washer (2) and tighten lightly with the screw (1).Mount the tension piece (5) with tension lever (4) and secure with the screw (3).Resetting the scale plate (6):Tighten the stopper (15) on the workpiece spindle with the tension lever (14) at the permanentstop (20).Turn the scale ring (6) until the stopper (15) can be turned radially on the permanent stop(20) without seeing a light gap.Loosen the socket screw (1) and turn the scale ring to the 90 degree position.Maintain the scale ring (6) position with the tension piece (5) and tightly lock the socket screw(1).The fme adjustment of the scale plate (6) is done by adjusting the vernier (17).Loosen the two screws (18) and adjust the vernier (17). Make sure the vernier is not touchingthe scale ring (6).

21.0 Adjusting the micro switch (21)

20.142~).1529.1620.17

20.120.220.320.420.520.620.720.82().9

2.1.1 If the micro switch is not adjusted right, indexing mistake can happen. It is corrected as follow;21.2 Insert index pin (20) into the index plate and switch K2 so that index pin (20) stays inserted.2L3 Open counter nut at the micro switch (21) with 5.5 mm wrench.2L4 Set a dial indicator with magnetic base on top of the mounting screw of the helix adjustment

scale (9).21.5 Turn the adjustment screw at the micro switch (21) to the right until the electromagnet is

switching the control roller. The dial indicator has moved up approximately .001" (0.25 mm).No the control roller has released the workpiece spindle (15). The index pin (20) stays in theindex plate.

2L6 The adjustment screw at the micro switch (21) is now turned to the left until the electromagnetis switching the control roller - Dial indicator moved downward. Add another half turn to theleft to assure proper switching, then counter lock with nut.Now it is assured that the control roller is switching before indexing and thus eliminating indexerrors.

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