Nothern Industrial tools 426245 Manuel utilisateur

UNIVERSAL CUTTER /GRINDER

OWNER’S MANUAL

WARNING: Read carefully and understand all

INSTRUCTIONS before operating. Failure to follow the safety

rules and other basic safety precautions may result in serious

personal injury.

Item# 426245

CONTENTS

·Nomenclature of Controls------------------------------------------------------------------------------------------------------------------------------0

·Grinding Spindle-------------------------------------------------------------------------------------------------------------------------------------------0

·Servicing the index head bracket--------------------------------------------------------------------------------------------------------------------1

·Dressing the Grinding Wheel--------------------------------------------------------------------------------------------------------------------------1

·Cutter Profiles-Tool Angle-Cutting Speeds-------------------------------------------------------------------------------------------------------1

·Cutting Speeds---------------------------------------------------------------------------------------------------------------------------------------------2

·Tool angles recommended cutting speeds for single-lip cutters-------------------------------------------------------------------------3

Centering the Cutter Lip by Grinding---------------------------------------------------------------------------------------------------------------3

Circular Grinding of Cutters-Grinding the Back Angle of Side Cutting Edges--------------------------------------------------------3

Circular Grinding of Cutters-Grinding the Back Angle of End Cutting Edges---------------------------------------------------------4

Grinding Pointed Cutters--------------------------------------------------------------------------------------------------------------------------------5

Grinding the Back Rake Angle-------------------------------------------------------------------------------------------------------------------------5

Grinding Tapered Cutters- Circular grinding of side and End Cutting Edges---------------------------------------------------------6

Circular Tapered Cutters-Grinding the Back Angle of Side and End Cutting Edges------------------------------------------------7

Grinding Tapered Cutters-Grinding the Back Rake Angle of Side and End Cutting Edges (Round) --------------------------7

ACCESSORIES----------------------------------------------------------------------------------------------------------------------------------------------8

Twist Drill Grinding Attachment-----------------------------------------------------------------------------------------------------------------------8

INSTRUCTION FOR GRINDING END MILL---------------------------------------------------------------------------------------------------------9

INSTRUCTION FOR GRINDING A LATHE TOOL BIT--------------------------------------------------------------------------------------------10

Turning Seat Attachment---------------------------------------------------------------------------------------------------------------------------------12

Twist Drilling Attachment---------------------------------------------------------------------------------------------------------------------------------12

Leather Tools Attachment--------------------------------------------------------------------------------------------------------------------------------13

End Mills Attachment--------------------------------------------------------------------------------------------------------------------------------------13

Nomenclature of Controls

D Wheel dressing attachment S3 Index head slide

A Spring collect clamping quill Owhite dot window

T1 Cross slide clamping lever S5 Index head slide fine adjustment set screw

S2 Vertical swivel mount setting scale S4 Index head slide fine adjustment screw

T2 Vertical swivel mount clamping lever Q Cross slide

T3 Horizontal swivel mount clamping lever T6 Index drum F clamping lever

T4 Tubular guide clamping lever B1 Collect sleeve

FHorizontal swivel mount index drum U2 Screw

T7 Clamping lever for adjustment along tubular guide A1 Stop plate for 90 degree

H Index head bracket fine adjustment screw U3 Screw for A1

GAdjustable stop screw N4 Index drum

T5 Index head slide clamping lever N5 Ring nut

CCutter lip aligning gauge E Index ring bearing sleeve

C1 Cross slide venires scale for off-center radii M3 Nut for index sleeve

P Spring collect index pin R7 Slotted disc

A3 Adjusting eccentric pin M4 Nut

GRINDING SPINDLE

The spindle bearing has been factory-adjusted to exclude play while allowing for a free-running spindle. In the event

some play develops in the course of time, such play should be taken up by tightening the two nuts M. for this purpose, pull spindle

form its seat after having loosened screw S and removed the parts as indicated in the illustration on page 15 and relighting R. When

tightening the nuts allow fore a forerunning spindle. Excessive tightening would result in bearing failure. After reinserting the

spindle assembly carefully tightens screw Sin the bore, to hold the spindle assembly in position.

Servicing the Index Head Bracket

General

After a major period of use it will be necessary to dismantle the index head bracket and to clean and lubricate the collect

sleeve bearing, the index head slide, and the swivel arm.

Collets Sleeve Bearing

To remove the collect sleeve proceed as follows; Remove ring nut N5, index drum N4, and index ring R7, in that order.

Remove two nuts M3 pull or out index bearing sleeve E. The annular grease chamber in the longitudinal slide L, which has thus

been made accessible, should then be cleaned with petrol and refilled with tease.

Slide Release clamping screw T5 and remove screw S5.Pull our index head slide S. Clean all working surfaces, smear lightly with

oil, cross slide Q can not be removed. Release clamping screw t1 and turn screw S4 to move the cross slide to its extreme positions.

Clean the bearing surfaces smear lightly with oil.

Swivel Arm

To remove the swivel arm and the index head as a unit remove the two nuts M4.Clean the bearing surfaces and smear them

with oil.

Adjusting the Clamping Mechanism of Index Drum F.

After a major period of use clamping lever T6 should no longer lock swivel index drum F, screw U2 will have to be adjusted.

For this purpose proceed as follows: Remove swivel arm as described above; remove screw U3 and stop plate A1; back off nut M2

and screw U1 and pull out clamping lever T6. Lift off index drum F to pull out adjusting nut and screw U2 rotate screw 180orelative

to nut to reduce the length-to reassemble parts reverse procedure.

Adjusting the stop pin for the 90oswivel motion

If, due to constant striking of stop plate A1 against stop pin A2 and A3, the swivel range should no longer be

exactly 90ocorrect the adjustment by turning the two eccentric stop pin A2 and A3. Turning stop pin A2 will change the

cylindrical setting of the collect sleeve bearing, while turning stop pinA3 will adjust the 90oswivel motion.

Dressing the Grinding Wheel

Wheel Turing and dressing should be performed at regular intervals. Dressing is done by means of a diamond set in a tip

which is held in a rod. The latter is attached to an arm which is provided with a feed screw. The diamond tool assembly s supported by

the wheel guard (see Fig. 1 and 2) wheel Turing and dressing is particularity necessary when the wheel has become headed or when

sharp corner has been worn off. Failure to comply with rule will result in poor surface finish and overheating of the cutting tools.

Messing:

1. Loosen clamping nut D. Shift dressing diamond to the right. Swing the dressing attachment in front of the wheel rim.

2. Set diamond, dresser 1 mm in front of the wheel. Lock clamping nut D.

3. Turn feed screw until the dressing diamond contacts the wheel. The layer to be dressed is 0.2mm.Give feed screw 1/5th turn.

Cutter Profiles-Tool Angle-Cutting Speeds

Cutter Profiles

As rule, single-lip milling cutters are given one of the seven basic profiles illustrated below:

Above are illustrated the seven basic cutter profiles and cross sectional views of the profiles they will produce

Material to be cut Tool Angle Recommended cutting speeds for high speed steel single lip

cutter roughing cut finish cut

αβγS.f.p.m m/min s.f.p.m m/min

25°15°5°195 60 260 80

Cast steel

Malleable cast iron

Machinery steel

230 70 295 90

57,000 to 85,000

(40to60kg/mm)

195 60 230 70

85,000 to115,000

(80kg/mm)

130 40 165 50

Over 115,000

(80kg/mm)

195 60 260 80

Tool steel soft

grade hard grade

165 50 230 70

Cutter with end relief. Cutter with pointed end. Rounded-off cutter

Tool Angles

As is the case with all metal cutting tools, single-lip milling cutters require the proper amount of cutting edge relief or back rake

angle for maximum stock removal and high surface finish. As regards single-lip cutters, three different tools angles will have to be

taken care of, these angles being used in all kinds of cutters.

Angle βapplies to end relieved cutters only. Cutters having an angle of less than 20oshould be relief ground at between 25oand

30o.

Cutter Speeds

As regards single-lip milling cutters, it is recommended to use cutting speeds three times higher than those used with standard

type milling cutters. The data tabulated on the below should be used as a guide only. As such factors as drive conditions and available

spindle speeds will also have to be taken into consideration. In end cutting edges the cutting speed will decrease forwards the cutter.

Center line. This effect is particularly noticeable in rode-off cutter. As a consequence, care should surfaces are concerned, rather than

downward.

When cutting soft aluminium, use kerosene as a coolant. When cutting celluloid, the cutter must always be in feed motion, in order to

Brass, 58/41 soft

Grade hard grade

655 200 820 250

820 250 1150 350

30°15°5°

Brass,63/37soft

grade Hard grade

395 120 490 150

490 150 590 180

Bronze soft grade 525 260 655 220

655 200 755 230

Hard grade

Aluminum soft

Grade hard grade

35°

655 200 985 300

820 250 1150 350

985 300 1150 350

25°15°5°Wood

35°820 250 985 300

Plastic: Trogon

45°25°20°688 200 820 250

Pertinaz,Fiber

655 200 985 300

Astral on, Celluloid

Plexus 655 200 1150 350

avoid inflammation.

Tool angles recommended cutting speeds for single-lip cutters

Centering the Cutter Lip by Grinding

Cylindrical single-lip milling cutters are supplied by the manufacturer with the lip preformed by rough milling (see Fig. 1). As a result,

the cutter lip will first have to be accurately centered by grinding. Rough grinding of the lip is performed manually by holding the cutter

giants the circumference of the grinding wheel (see Fig.2). This operation is followed by finish grinding in the machine. The off center

tolerance is ±.0004”(0.01mm), which should be checked with a micrometer caliper (see Fig.3). To grind the cutter lip correctly,

proceed as follows:

Setup Operations

1. Set swivel arm and index drum F at zero, tighten clamping lever T3: set vertical setting scale S2 at zero, tighten clamping lever

T2 (see Fing.4).

2. Set cutter with aligning gauge C clamp cutter in position, rectum aligning gauge C (see Fig.6).

3. Withdraw index pin Prostate spring collect bearing 180o, allow index pin P to engage the short-slot.

4. Shift index head bracket along tubular guide to bring cutter lip into light contact with end face of grinding wheel. Be sure prior to

tightening clamping lever T7, to align vertical sisal swivel mount index mark with tubular guide. Tighten clamping lever T7,

release clamping lever T4.

Centering the Cutter Lip

6. Fine adjustment screw H serves to set the index head accurately relative to the wheel and to provide the desired depth of cut.

The travel of the cutter past the wheel can be limited by means of adjustable stop screw G. Thus it is possible, during priding to

advance the cutter as far as it will go. To bring the cutter lip within the prescribed off-center tolerance, reciprocate the index head

bracket while advancing the cutter by rotation fine adjustment screw H.

In order to prevent the cutter from being overheated, it is recommended to leave only a narrow cutting zone on the grinding wheel

(see page 5 “Dressing the Grinding Wheel”). The length of the cutter lip should equal one and one half times the diameter of the

cutter.

It is not advisable to Increase the length of the cutter lip beyond a certain limit. In the case of deep engraving work where stepped

cutter is sued the shank of the cutter will be increased instead of the lip.

Circular Grinding of Cutters-

Grinding the Back Angle of Side Cutting Edges

After centering the lip it will be necessary to grind the back rake angles of both the side cutting edge and the end cutting edge. The

back rake angles of both cutting edges should be selected to suit the material to be cut.

Setup Operations

1. Rotate swivel arm to set index F at zero; tighten clamping lever T3.

2. Bring white dot into window Unengaged index pin P into long slot.

3. Align cutter by means of gauge C; grip cutter in position return gauge C (see Fig.2).

4. Release clamping lever T2;set swivel arm at desired back rake angle using setting scale S2;tighten clamping lever T2 (see

Fig.3).

5. Tighten clamping lever T4;release clamping lever T7;shift work fixture on tubular guide to bring cutter into light contact with

grinding wheel, tighten clamping lever T7;release clamping lever T4.

Circular Grinding

6. Draw index pin P out of the slot; grind desired diameter by rotating spring collets bearing through 360o. During this operation

slowly rotate adjustable stop screw G, while continuously rotating the spring collets bearing, to advance the work fixture past

the grinding wheel; this will produce uniform stock removal. Fine adjustment during circular grinding is by screw H. Stop screw

G is used to establish the length of the cylindrical portion which should always be slightly longer than the cutting lip.

7. Return whit dot into window Unengaged index pin P into short slot to enable bearing to be rotate 180obetween the index plate

stops.

Grinding the Back Rake Angle

8. When grinding the back rake angle, use the fine adjustment screw H over the entire range of rotation of the collets bering (see

Fig.3a). Grinding of the back rake angle is positive controlled. The angle is required to extend over the entire lengthy of the

cutting lip.

The vertical swivel bearing, which permits the work holding fixture to be swung back, enables relief angles up to 40oto be produced.

Relief angles over 40~can be obtained by additionally rotating the collets bearing in the index head. (Only for cylindrical or tapered

cutter with straight end cutting edges or for pointed cutters.)Upon completion of grinding operations a very narrow land must remain

at the cutting edge (see Fig.4).

Circular Grinding of Cutters-

Grinding the Back Angle of End Cutting Edges

The end cutting edge illustrated in Fig. 1 may be ground it an operation immediately following the grinding of the side cutting edge; or

it may be ground independently. In the latter case the cutter will have to be aligned by means of gauge Cad clamped in position.

Whenever a single-lip cutter is to be ground, the aligning will have to be used, as one leg of the cutting angle should be selected to

suit the material to be cut. (See page 5)

Setup Operations

1. Release clamping levers T2; using setting scale S2, set swivel arm at approx. 3o; tighten clamping lever T2.

2. At desired angle; for example set arm at 75ofor back angle of 15o(see Fig.2and Fig.3). Tighten clamping lever T3and T6.

3. Tighten clamping lever T4; release lever T7; shift work fixture on tubular guide to bring cutter into light contact with grinding

wheel tighten clamping lever T7; release lever T4.

Grinding the Back Rake Angle

4. Fine adjustment screw H serves to set the index head laterally reactive to the wheel and to set the work for the desired depth of

cut. It is also possible to produce the desired back rake by holding the cutter against the circumference of the grinding wheel as

is shown in Fig4.

Circular Grinding of Cutters –

Grinding the Back Angle of End Cutting Edges (Round)

Cutter profiles having either on-center or-off-center radii are derived from cylindrical single0lip cutters having a straight end cutting

edge by rounding off the corner as shown in Fig.1 (No.2 and 3 profiles).

For this reason it is necessary, during grinding the end rake angle, that the work fixture is set at the side rake angle by means of

setting scale S2. If the end cutting edge is ground immediately after grinding the Sid setting edge, it will not be necessary to re-set the

work fixture and to re-align the cutting lip by means of gauge C.

Setup Operations

1. a. No.2 profile : Release clamping lever T1:rotat knurled knob S4 to set cross slide by means of venire scale C1 for desires

radius (to the right);tighten clamping lever T1,9see Fing.2)as the radiuses corner is required to be tangent to the cutter

diameter, the amount of off-set

“a” is: a = D / 2 – r

Example: Given r=.06” (1.5mm); D=.30” (8mm)

A=.15” (4mm)-.06” (1.5mm) =.09” (2.5mm)

b. No.3 profile: The venire scale C1 of the cross slide must be set zero (see Fig. 3).

2. Rotate fine adjustment screw H to bring the side cutting edge of the cutter into light contact with the face of the grinding wheel.

Caution: do not injure the land of the side cutting edge. Now screw H must no longer be rotated.

Grinding the Back Rake Angle

3. Swivel index head through 90o(see Fig.4). Depth of cut adjustment now is by index heaps slide S1. Fine adjustment is by

micrometer screw S6 of the index head slide with adjustment screw S5 tightened. The end of the cuter is rounded by slowly

swiveling the index head back to its original position. While the cullet bearing is continuously rotated back and forth between

the stops, the rotation being through 180o(see Fig.5 and 6). Prior to grinding, be sure to with draw the index head a slight

amount by rotating screw S in order to prevent overheating of the cutter by excessive stock removal. After each pass of the

grinding wheel the cutter is then fen toward the wheel by means of screw S.

In order to obtain a satisfactory cutting edge it is advisable, as a final operation, to swivel the index head through 90owith the cutters

given a No.3 profile are intended for the machining of hard steel which requires a small back rake angle, it is good practice to flatten

the curvature of the cutter by a manual grinding operation as shown in Fig.7.

Grinding Pointed Cutters

Where pointed cutters are concerned, both the included angle of the point and the aback rake angle are produced in one operation

(see Fig. 1). The back rake angle should be selected to suit the material to be cut.(see page 5)

Setup Operations

1. Align cutter lip by means of gauge ’C; grip cutter in position; return gauge C.

2. Engage index pin P into short slot to enable collets bearing to be rotated 180obetween stops.

3. Release clamping levers T3 and T6 hold index drum F against stop and, beginning at zero position. Set swivel arm at one half

the desired point angle (see Fig.2).

Example: Given a point angle of 60oSet swivel arm by index drum F at 30o.Retighten clamping levers T3 and T6.

4. Release clamping lever T2; set work fixture for desired back rake angle by means of sitting scale S2, see Fig.3. Tighten

clamping lever T2.

5. Tighten clamping lever T4; release lever T7; shift work fixture on tubular guide to bring cutter into light contact with grinding

wheel tighten clamping leverT7; release lever T4.

6. During grinding slowly return stop screw G to advance the work fixture past the wheel; at the sane time continuously rotate the

collets bearing back and forth between the stops, the rotation being through 180oThis ensures uniform stock removal (see

Fig.4a，b，c，)Uniform stock removal will protect the cutter from overheating. Whet the cutter point by means of an oil stone. It

is advisable to whet the point as far as engraving conditions permit. This operation will give the point a small end cutting edge

which will participate in removing stock (See Fig. 5) .However, where airline engraving work is concerned(depth of cut nor

exceeding.0004”(.01mm) the shape of the point should not be changed; only the cutting edge proper should be carefully

whetted.

However, care should be exercised not to remove noticeable amounts of stock from the cutting lip, as this would destroy the

centering of the lip; moreover, this would render a greater or lesser part of it useless. When grinding the cutting lip for the first

time, care has to betaken to grind with a positive tolerance.

Grinding Tapered Cutters-

Circular Grinding of side and End Cutting Edges

Tapered cutters can be ground to size in the machine without the use of any measuring instrument, except for the scales provided on

the machine. For circular grinding operations on profiled cutters follow this procedure:

Setup Operations

1. Align cutter lip by means of gauge ’C; grip cutter in position; return gauge C.

2. Draw index pin P out of slot hole to enable collets bearing to be rotated through 360oRelease clamping levers T2, T3, T6. Set

scale S2 and F at zero. Tighten clamping levers T4, T2, T3, T6 see Fig.

3. Release clamping lever T7;bring cutter diameter into light contact with grinding wheel; tighten clamping lever T7,taking care to

keep index mark of vertical swivel mount aligned with tubular guide; release clamping lever T4,see Fig.4.

4. A.N0.5 profile 9Fig. 1 and 2): Release clamping lever T1; rotate knurled knob S4 to shift cross slide to the right by one-half of

dialog the taper (‘Fig.1). For this purpose use cross slide venire scale T. Tighten clamping lever T1.

B.No.6 profile (Fig. and 2): Release clamping lever T1; rotate knurled knob S4 to shift cross slide to the right by the desires

amounts” (use cross slide venire scale T). Tighten clamping lever T1.

C.No.7 profile (Fig. 1 and 3): Set cross slide venire scale at zero.

5. A.No.5 and 7 profiles: Rotate fine adjustment screw H to bring cutter diameter into light contact with grinding wheel: again

rotate screw H to shift cutter to the left by amount x = D/2-a. To facilitate this setting operation, set scale drum of screw H at

zero without disturbing the setting of the screw (see Fig.4).

b.No.6 profile :Rotate screw H to bring cutter diameter into light contact with grinding wheel; again rotate screw H to shift cutter

to left by the amount x=D/2-(a+r). To facilitate this setting operation, set scale drum of screw H at zero without disturbing the

setting of the screw (see Fig.4).

6. Release clamping lever T3; ratate swivel arm through 90o; release clamping lever T5; rotate index head slide micrometer

screw S to advance end face of cutter towards grinding wheel. Wheel tapered cutters are to be retargeted; the length of the

cutting edge at the end of the cutter should be made greater than the small diameter of the tapered portion.

7. Release clamping lever T6; hold index drum F against its stop and counting from the zero position, set swivel arm at the

desired taper angle; tighten clamping lever T3 and T6, sgg Fig.6.

8. A.No.5 profile: Slowly return stop screw Gad and continuously rate the collets bearing through 360oto advance the cutter

past the grinding wheel. Prior to the circular grinding operation ratite fine adjustment screw H to shift the cutter to the right; the

advance the cutter towards the wheel by small increment unit the desired size has been obtained (see Fig.6).

b.No.6 and 7 profiles: Release clamping lever T3; first slowly return stop screw G, then slowly swing the swivel arm while

continuously rotating the collets bearing through 360oto move the cutter past the wheel and thus to circular grinding

operation ratite fine adjustment screw H to shift the cutter to the right; then advance the cutter towards the wheel by small

increments until the desired size has been obtained (see Fig.7 & 8).

Circular Tapered Cutters-

Grinding the Back Angle of Side and End Cutting Edges

The back rake angles of the side and end cutting edges may be ground immediately after circular grinding the desired cutter profile; or

in cases where only the taper angle (not, however, the small diameter of the tapered portion) is of importance, grinding may be

performed in an independent operation. Where the small taper diameter must be held within close tolerances, only the end cutting

face will be ground; in this case the cutter will have to be by gauge C and clamped in position. The back rake angles of the side and

end cutting edges should be selected to suit the material to be cut. For toll angles refer to Fig. 1.

Grinding the Side Cutting Edge

Setup Operations

1. Engage index pin R into shoet-slot; bring white dot into window O.

2. Release clamping lever T2 using scale S2 set cutter at desired back rake angle; tighten clamping lever T2, see Fig.2.

3. Tighten clamping lever T4;release lever T7; T4;release lever T7;shift work fixture on tubular guide to bring cutter into light

contact with grinding wheel tighten clamping lever T7,taking care to keep index swivel mount aligned with tubular quite; release

clamping lever T4.

Grinding the Back Rake Angle

4. While continuously rotating the collets bearing through 180o(back and forth between the stops), advance the cutter towards

the grinding wheel by means of fine adjustment screw H. This will produce the desired back rake angle in a positively controlled

operation (see Fig.2). Upon completion of the grinding operations on the side cutting edge, a very narrow land must remain at

the edge.

Grinding the End Cutting Edge

Setup Operations

1. Release clamping lever T2; using scale S2, set swivel arm at an angle of approx.3; tighten clamping lever T2, see Fig.3.

2. Release clamping lever T# ND t6;Hold scale F against its stop and, beginning at the 90 –position, set swivel arm at the desired

angle; for example where an angle of 10 is desired, the swivel arm will have to be set at 80 . Tighten clamping levers T3 and t,

see Fig.4.

3. Tighten clamping lever T4;relese lever T7;shift work fixture along tubular guide to bring end face of cutter into light contact with

grinding wheel; tighten clamping lever T7,taking care to keep index mark of vertical swivel mount aligned with tubular guide;

release clamping lever T7.

Grinding the Back Rake Angle

4. Lateral fine adjustment of the work fixture relative to the grinding wheel and adjustment for depth of cut is obtained by means of

screw H. It is also possible to grind the back rake angle manually; care should however, be taken to produce the correct tool

angles (see Fig.5).

In cased where close tolerances on the small taper diameter after grinding edge will have to be maintained; this will make it

possible to check whether or mot the small taper diameter was changed during grinding operations (see Fig.6)

Grinding Tapered Cutters-

Grinding the Back Rake Angle of Side and End Cutting Edges (Round)

Tapered cutters having either an off-center of an on-center adios can be given a back rake angle only in connection with her circular

grinding operation (see Fig.1). The back rake angle of the side cutting edge equals that of the straight or codec end cutting edge; the

proper angle to be used will be found in page 5. After tapered cutters with rounded end cutting edges have become dull, first proceed

with the circular girding operation described on page 12; then follow the procedure indicate below.

Setup Operations

1. Release clamping lever T2;use scale S2 to set work fixture at desired back rake angle; tighten clamping lever T2.Tighten

clamping lever T4;release lever T7;shift work fixture along tubular guide to bring cutter into light contact

2. with grinding wheel; tighten clamping lever T7,taking care to keep index mark of vertical swivel mount aligned with tubular

guide; release clamping lever T4.(see Fig.2)

Grinding the Back Rake Angle

3. While continuously rotating the collets bearing through 180 (back and forth between the stops), advance the cutter towards the

grinding wheel by means of fine adjustment screw H. This will produce the desired back rake angle on both side and the end

cutting edges in a positively controlled operation (see Fig.3, 4, 5).

Upon completion of grinding operations, a very narrow land must remain at the cutting edge.

In cases where the cutter is intended for the machining of hard steel which requires a small back rake angle, it is

4. Advisable to grind off part of the curvature in a manual operation (see Fig.6).

In addition it is recommended, with regard to all single lip cutters, to whet also the cutting lip by means of an oil stone in order to

remove burrs. However, care should be exercised not to remove noticeable amount of stock from the cutting lip, as this would

destroy the centering of the lip; moreover, this would render a greater or lesser part of it useless.

ACCESSORIES

STANDARD EQUIPMENT

1.Wheel dresser with diamond 1 14.Wheelmount(Flange)(C1) 1

2.Diamond pen 1 15. Hock spanner(C8) 1

3.Wheel mount(Flange)(C1) 1 16.Wheellockpin(C5) 1

4.Drivingbelt(C3) 1 17.Springcollects(C7) 5

1/8’,1/4”,5/16”,3/8”,1/2”

5.Wheel lock pin(C5) 1 18.Wheelspanner(C9) 1

6.Machinelight 1

7.Hex socket screw wrench(C4) 4 SPECIALACCESSORIES (ON EMEND)

8.Aligning finger(C6) 1 1.Diamond wheel for grinding carbide cutter

9. Operating Instructions 1 2.Balance stand and arbor

10. Twist drill grinding attachment 1 3. Special index head slide with clamping sleeves for

grinding dial,20,25mm cutter

11.Endmillgrindingattachment 1 4.R8collets:dia, 3,4,5,6,8,9,10,12,14,16,18,20,22,25and

1/8’,3/16”,1/4”,5/16”,3/8”,1/2”,5/8”,3/4”

12.Lathe tools grinding attachment 1 5.Drivingbelt.

13. High-speed cutter grinding wheel 1 6. High-speed cutter grinding wheel.

4”×2”×3/4”(C2)

Twist Drill Grinding Attachment

The twist drill grinding attachment has been designed for grinding twist drills of 3 to 18 mm (1/8”to11/16”)diameter. The lip angle is

always 116, while the back rake angle is adjustable as required.

To mount the attachment (see Fig.2), attach a 12 mm (1/2”) spring collets to locating pin 1 and insert the collets into the index head

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