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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

 

O

 

white 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

 

F

 

Horizontal 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

 

G

 

Adjustable stop screw

 

N4   Index drum

 

T5

 

Index head slide clamping lever

 

N5   Ring nut

 

C

 

Cutter 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. 

                   

 

Summary of Contents for 426245

Page 1: ...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 inj...

Page 2: ...nt 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 d...

Page 3: ...t off index drum F to pull out adjusting nut and screw U2 rotate screw 180o relative to nut to reduce the length to reassemble parts reverse procedure Adjusting the stop pin for the 90o swivel motion...

Page 4: ...of less than 20o should be relief ground at between 25 o and 30 o Cutter Speeds As regards single lip milling cutters it is recommended to use cutting speeds three times higher than those used with s...

Page 5: ...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 possib...

Page 6: ...ing 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 gro...

Page 7: ...ed 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 beari...

Page 8: ...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...

Page 9: ...tion 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 rel...

Page 10: ...DARD 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 Driving belt C3 1 17 Springcollects C7 5 1...

Page 11: ...K5 Release clamp 3 on attachment and adjust swivel mounted V guide 4 until the scale shows the diameter of the twist 5 Drill to be ground Retighten clamp 3 Release clamp K1 tighten clamp K Move index...

Page 12: ...ide pin to grinding the rake of end mill following the screw of end mill by the direction from front to back as drawing IV To grinding the secondary relief angle when the primary relief angle grinding...

Page 13: ...ivel the lathe tool grinding attachment horizontally by the degree at original position then swivel the lathe tool grinding attachment vertically by the degree of front relief E and second relief E2 C...

Page 14: ...ht Left Fixed Screw 20 Collect A4001 8 Key 21 Key 9 Right Left Micro Adjust Level 22 Seat A3003 10 Gear A4005 23 Handle 11 Plate A4038 24 Turning Seat A3006 12 Dearer Bolt A4030 25 Sleeve Tighten Nut...

Page 15: ...Bolt M6 12 9 Bolt M4 8 5 13 Bolt A4031 M6 20 End Mills Attachment Index NO Parts Name Parts NO Remarks Index NO Parts Name Parts No Remarks 1 Collect seat Tighten Screw A4019 9 Bolt M5 12 2 Collect Se...

Page 16: ...Northern Tool Equipment Co 2800 Southcross Drive West P O Box 1499 Burnsville MN 55337 0499 Made in China...

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