Norton Type C Cylindrical Grinding Machine Grinder, Cylindrical

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6" TYPE

C

HACffltSRY CO,

CYLINDRICAL GRINDERS

6" x 18" Type C—Left End View

N-3609

6" x 18" Type C—Right End View

N-3613

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The new Norton 6" Type C Machine has been designed to handle a multitude
of jobs in small or large quantities with equally high efficiency. Economical and
accurate production is assured.

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The design is of the unit type construction, which is considered most efficient
from the standpoints of
is granted to the operator, since all the controls are situated so that he does not
have to change his position. A wheel spindle reciprocating device can be supplied
for plunge cut grinding.

Features of the new 6" Type C Machine are shown graphically in the follow
ing pages. If you have special parts to be ground, we suggest that you get in touch
with us. Our engineers will be pleased to give you their recommendations.

\_Front Cover: Operator Grinding Spindles in 6 x 18" Type C Machine

flexibility and maintenance. Utmost working convenience

Table Splash

.

Guards Removed for Photograph

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6 " X 18"
Type C

Rear View

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N

-3807

Hand Traverse

• Hand traverse only if desired.

• Rack attached to underside of sliding table.

• Two speeds provided for table.

Hydraulic

• All hydraulic mechanisms located inside base.

• Cylinder firmly attached to base ribs.

• Gear type pump used.

• Propelling piston rod always in tension.

• Compression stroke thereby eliminated avoiding tendency of

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• Table traverse as low as ’3"

• Table traverse hand wheel automatically disengaged when hydraulic power is
used and vice versa.

• Positive reversal at any speed.

Close Grouping

Traverse

per minute for truing.

of Controls Assures Convenience

and Ease of

rod to buckle.

Operation

N-3614

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• Direct motor drive only.

• Individual motors are used to drive the:
(a) Grinding Wheel
(b) Headstock
(c) Coolant Pump
(d) Hydraulic and Lubricating Pumps.

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• Rectangular box type.

• Heavily ribbed casting.

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• Rests on three points.

• Coolant and hydraulic oil reservoirs of increased capacity are integral with base.

• Large bearing area of ways.

• Practically no overhang of tables when grinding maximum length of work.

• Base ways are always well protected by telescoping guards.

• Foot hole in base allows operator to get close to work.

Base

5

Wheel Slide Assembled on Base

Showing

Long Ways

Wheel Slide Unit

N-3778

7

H

• Entirely self-contained unit.

• Moves on vee and flat ways which are of large area and are widely separated.

• Weight uniformly distributed on ways.

• Ways of both wheel slide and base scraped with utmost care and precision.

• No side thrust of slide.

Wheel Spindle

• Spindle end thrust of large area.

• Large bronze bearings automatically flood lubricated.

• Bearings easily adjusted.

• Journals of spindle finished to less than 2 microinches R.M.S.

• Spindle .driven at end by jtfcgCE vee belts.

• No idlers used. Direct drive from motor to spindle.

Wheel Feed

• Ground threads on feed screw.

• Large diameter feed screw revolves in half nut bolted to bottom of slide.

• On hydraulic traverse machines wheel feed is automatic at each table reversal.

• On hand traverse machines wheel feed is by hand.

• Index wheel integral with hand wheel.

• Feed screw end thrust easily adjusted at rear of machine.

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• Each hole

• Power wheel traverse can be supplied when necessary.

of index

wheel corresponds to

reduction of 0.0001" in diameter of

work.

N-3612

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Swivel and Sliding Tables Assembled as Unit

Tables

• Sliding table moves on base ways.

• Swivel table pivots at center of sliding
table.

• Bearing area of table ways large and
well distributed.

• Swivel tables built to allow easy load

ing.

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• Clean cut splash guards conform to
smooth appearance of machine.

*

Widely Separated Base Ways, Table

*

Cylinder and Rack Pinion

N-3802

Pumps

• Vertically suspended by springs.

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• Coolant and hydraulic pumps directly coupled to motors.

• Operate submerged.

• No vibration transmitted to work being ground.

• Hydraulic pump motor drives lubricating pump by means of single belt.

• Separate reservoir for lubricating oil.

• Metered amount of lubricating oil pumped to table and wheel slide ways.

Pump Unit Showing Hydraulic and

Coolant Pump Unit

Lubricating Pumps and Lubricating

Oil Reservoir

■

N-3803

Footstock

° Strong spindle ground to close fit in micro-lapped hole in footstock body.
® Solid high speed steel center has full diameter of point hardened.

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® Top of footstock allows convenient location for tools.
® Lever operated spindle can be moved so that spindle remains in either forward

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or backward position.

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o Binder lever for locking spindle when necessary.

® Working parts inside footstock are hardened permitting long wear.
o Lateral adjustment of spindle supplied at extra cost.

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Available in live spindle or dead center arrangements.
Clamped firmly to table.

Headstock

Long bearing on table.
Spindle and center of large cross section.
Drive can be from either A.C. or D.C. motor.
Vee belt drive from motor to jackshaft.
Tension of vee belts easily adjusted by tilting headstock motor base.
Drive to face plate by means of fine pitch chain running in oil.

Eccentric type of take-up of drive chain.
Large contact area of chain on drive sprocket and work sprocket due to absence

of idler sprocket.
Work

rotation started and stopped by movement of conveniently located clutch

lever.

Center of high speed steel.
Full diameter of center point hardened.
Live

spindle runs in anti-friction bearings.

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Headstock—Front View

N-3608

Headstock

—

Rear View

N-36I6

• Dead center motor drive headstock not including motor.
© Footstock, lever type.

• One Wheel Guard 20 x 2" including coolant pipes.
® One Wheel Sleeve, balancing type for 12" hole 2—2J-§" face wheels.
© One Diamond Tool Holder, footstock type.

® One Work Drive Dog, V/2' capacity.

• One Work Drive Dog 2J/2" capacity.

• Two grinding wheels of same diameter as wheel guard ordered; specify size,
grade and grain desired.

Integral

Cam Grinding

Attachment

• For grinding cam contours.

• Swings work toward and away
from wheel.

• Mounted on sliding table.

• Driven directly from head-
stock.

• Capacity for 6 x 30" ma
chine, 4" diameter and 7"
long.

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N-2619

Center Pointing Device

• For re-pointing centers.

• Hand drive.

• Easily clamped with one bolt.

• Can be used with adaptor sleeves for
pointing smaller centers.

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Table Type Diamond

Tool Holder

• Easily mounted on table.

• Trues all sizes of wheels up to the
capacity of the machine.

Radial Truing Device

• Trues any radius up to

• Easily mounted on table.

• Settings quickly made.

• Can be used on wheels 20
and less.

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diameter

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N-3794

Wheel Forming Device

• Trues various forms on grinding wheel.

• Forming bar can be changed very
readily to accommodate different cur
vatures.

• Blueprint of work should be sent to
Worcester.

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Multi-Stop Index Ring

• Used when grinding more than one
diameter in production work.

® Two stops included in price.
© Extra stops can be supplied.

Shoulder Grinding

Attachment

© Hand operated.

• Dial arrangement available for deter
mining exact amount wheel is moved
into shoulder.

• Machine must be equipped with recip
rocating attachment.

Direct Indicating Table

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Stop

• Small table movements can be meas

ured.

• Efficient for shoulder gauging and
location.

• Measures amount shoulder of work is
moved into wheel.

Balancing Arbor

• For putting wheels in static balance.

• Fits taper hole of

• Balancing stand also available.

• Wheels must be in balance to attain
good finishes.

• Higher production.

• Longer life for wheel and diamond.

wheel sleeve.

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Special Swiveling Live Spindle

Headstock

• Swivels horizontally and is graduated 90°.

• Mounted directly on sliding table.

• Equipped with two stops.

• One stop for angular location for grinding bevel

N-3472

Other

equipment available includes:

• WHEEL SPINDLE RECIPROCATING ATTACHMENT.

• COOLANT FILTER.

• WHEEL GUARD TYPE TRUING DEVICE.

• POWER WHEEL HEAD TRAVERSE.

• CONTINUOUS POWER CROSS FEED.

• WORK SUPPORTS.

• WORK AND TABLE LOCATING EQUIPMENT.

• TWIST DRILL GRINDING EQUIPMENT.

• ANGULAR WHEEL SLIDE ARRANGEMENT.

• VALVE GRINDING ATTACHMENT.

• Other stop for face grinding location.

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Electrical Controls m Cored Recess at

Rear of Machine

N-3685

Electrical

Equipment

• Cored recess in rear of

• All motors are dynamically balanced whether supplied by customer or by

base accommodates electrical controls.

Norton

Company.

• Sleeve bearing motors recommended for headstock and wheel drive.

• Totally enclosed

motors must be supplied for hydraulic pump and

coolant pump drives.

• Motor generator sets are available when adjustable speed work drive motor

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is desired with A.C.

• Current available should be specified for coolant and oil pumps.

• Specifications of motors to be furnished by customers should accompany all

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orders for machines.

These motors must be sent to the Norton factory at

Worcester, Massachusetts, U. S. A., for mounting on the machine.

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Motors

(s 7 £

• WHEEL DRIVE—7H

• WORK DRIVE—|

H.P., 1800 R.P.M. constant speed A.C.

H.P., 1200 R.P.M. constant speed A.C.* or-i

R.P.M. adjustable speed D.C.

• fPUMPS AND TABLE DRIVE—Hydraulic table traverse machines and
hand traverse machines with hydraulic wheel traverse: 3<i H.P., 1800 R.P.M.
constant speed A.C. totally enclosed, fan cooled motor. (This motor drives

both hydraulic and lubricating pumps.)—Hand table traverse machines:
H.P., 1200 R.P.M. constant speed A.C. totally enclosed, fan cooled motor (for
driving lubricating pump).

• fCOOLANT PUMP (for either hydraulic or hand traverse machines) 1_(
1800

R.P.M. constant speed A.C. totally enclosed, fan e

*Three step sheave pulleys furnished
fPump drive motors are furnished integral with pumps and included in price of machine.

when

A.C. is used for headstock drive.

ooled-motor.

H.P.,

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General

Maximum diameter possible to grind with

20" wheel

Maximum diameter possible to grind with

24"

Maximum swing over table
Lengths

DISTANCE BETWEEN WHEEL CENTER

AND WORK CENTER:

Maximum
Minimum

Coolant tank capacity in U. S. gallons

GRINDING WHEELS:

Standard
Maximum width and diameter.. .20 x 3 x 12"

Maximum diameter and width..

STEADYREST

Maximum diameter of work accommodated

SWIVEL ADJUSTMENT FOR TAPER
WORK

Taper graduations in inches per

foot*

*Note: These figures do not represent the greatest taper
per foot that can be ground. Tapers depend on wheel
diameter,
tion of taper with reference to pivot point.

...........................................................

wheel

............................

between centers, nominal.. 18" and 30"

20 x 2 x 12"

. 24 x 2 x 12"

Machine

:

18"

.........................................................

work

diameter, and length, in addition to loca

4"

6K"

6 H"

13M"
.7 K"

2K"

30"

Headstock

Spindle

diameter

Center

diameter

Length of bearing on table

3"

Weight (approximate)
Work speed minimum:

With 1200 R.P.M. constant speed

motor

With 650/2600 R.P.M. motor

.....................................

.......................................

...............

..................................

Wheel Feed

Diameter of feed screw
Length

of

40

Index graduated to: English

half nut

..................

Metric

Footstock

Spindle diameter
Center diameter
Bearing length on table
Weight (approximate) .

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Base Ways

Machine, Nominal Lengths 18"

Dimensions of table

ways

3"

Distance between

ways center to cen-

ter

Lubrication

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each

.................

.........................

110 R.P.M.

70 R.P.M.

.

0.0025 m.m.

2>gx52K" 2^x70K"

8"

automatic

pressure

automatic

pressure

IK"

.

.8"

300 lbs.

...2 K"

■ .AH"

0.0001"

IK"

50 lbs.

30"

8"

2"

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2"

8"

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Wheel Slide

Length of bearing ways

Width of bearing ways:

Flat

.................................

Vee

..................................

Bearing area on ways (projected) in square

inches

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Overall width of ways
Weight with motor (approximate) lbs
Lubrication

Table Speeds

(Hydraulic Power Traverse Machines only)

Number of speeds

Range, inches per minute

Floor Space

Machine, Nominal Lengths

Total Projected Lengths
Total Projected Widths

The descriptions, illustrations and specifications in this booklet

Machines built at later dates may differ in detail

improve their machines.

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Automatic pressure

..............

................

..................

..........

18"

6' 10" 9' 8"

5' 0"

26 y&"

4 K"

m"

215
14"

1050

Infinite
3 to 360

30"

5'

Wheel Spindle

Material

Length
Large bearing
Small bearing
Spindle bearings. .Hard bronze, flood lubricated

Spindle drive
Sheave diameter (20" wheel)

.........

...........

..............................

Heat treated alloy steel

...................................

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2^"x6K"

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234" x 534" long

Shipping Specifications

Machine, Nominal Lengths

Net Weights
Domestic Shipping
Export Shipping Weights

Cubics—Boxed for Export

Because of variations in equipment and castings exact
weights and cubics cannot be given. The
are in pounds; cubics are in cubic feet. Motor weights

0"

are included.

due

to

the policy of Norton Company to constantly

...................................

Weights.

correct at the time of printing.

are

.........

.

.

. 240 260

27M"

long

4 vee belts

.........

1034"

18" 30"

5700 6150

6650 7200

7250 7700

above

weights

6 " x 30" Type C Power Traverse Machine

3

Form 379-4 P-3-40-3M-450B