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NORTON
HYDRAULIC—PRODUCTION—LAPPING MACHINE
HYPROLAP
Trade Mark Reg. U.
S.
Pnt. OfF.
2
FOR EITHER
FLAT
OR CYLINDRICAL
WORK
Quality is never an accident but is the result of sincere effort, intelligent direction,
and skillful execution. Accuracy is the twin brother of quality especially where precision
and production are involved.
Norton No. 26 Hyprolap.
The Norton Hyprolap is an extremely fast cutting machine which finishes a
score or more work pieces simultaneously
uniformity of finish obtainable in mass production by no other method.
is hydraulic powered and controlled — an exclusive Norton feature.
The principal characteristics of machine lapping which distinguish it from grinding,
even with bonded abrasive laps, is the movement of the work relative to the laps. By
means of a driving mechanism, the work is passed along an ever changing, horizontal
path between two revolving laps which reduce its size slightly and refine its surface or
surfaces in the case of the flat type machine. This action wears the laps uniformly and
eliminates completely the parallel grain marks in
These features are made possible commercially by the
and produces a combination of accuracy and
Lapping pressure
the
work surface left by grinding.
The following pages set forth briefly the features of this machine.
Base and Column
• A massive one-piece base casting, heavily ribbed throughout.
• Forms a support for the column, lower lap driving mechanism and driving motor.
• Three-point adjustment for positioning column in accurate alignment with the
lower spindle.
Page 3
Through-Feed
Lapping
Arrangement
:
of the NORTON
No. 26 HYPROLAP*
Lapping Machine
This arrangement provides features by which small,
flat parts are lapped automatically and continuously
I
at a rate that means lowest possible costs. The auto
matic action of the Through-Feed Arrangement elimin
ates manual effort thus reducing over-all lapping time
to an extent making possible a production as high as
8000 pieces per hour on certain types of small parts.
This high production is obtained with no sacrifice of
accuracy or finish.
Reduces
The automatic functioning of the arrangement also
reduces the degree of skill required in operation.
Handling of parts is reduced to a minimum. An occa
sional filling of the feed hopper and removal of the
finished work tray are the only manual functions
necessary in actual operation. The simplicity of these
duties plus elimination of the difficulties in hand load
ing small parts, may make it possible for the operator
to attend more than one machine.
Need for Skill
N 6665
N 6668
$
i
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Consistently High Output
i
The unvarying performance of the automatic loading
process coupled with the uninterrupted lapping action
and automatic unloading of the finished parts, result
in high, steady output. Production is independent of
loading and unloading time. It is dependent only on
the time required for the actual lapping of the parts,
and this is controlled by product requirements. In
terruption of lapping is essentially confined to the
time required for an occasional dressing of the bonded
abrasive laps. This is done by a hydraulically operated
truing device that trues the upper and lower lap faces
simultaneously.
*Trade-mark Reg- U. 5. Pa»-Off.
N 6594
Page 4
Automatic Action
M 6 5 95
N 6596
Parts stream automatically from the feed hopper
into the workholder which continually revolves during
normal functioning. A safety device stops workholder
rotation when the parts are not properly housed. The
workholder carries the parts in a special path between
the rotating bonded abrasive laps. This path is de
signed to traverse the entire working surface of the
laps, and the parts are automatically unloaded at
the end of this path into the finished work tray. Trav
ersing the entire surface of the laps achieves the break
up so essential to good lapping procedure and makes
for even lap wear. This reduces the number of lap
dressing operations to a minimum.
Bonded
Abrasive Laps
The action of the bonded abrasive laps on the parts
contributes to the high productiveness of the NORTON
Through-Feed Lapping Arrangement. Additional ad
vantages come from use of these laps in that parts
are delivered free from abrasive, do not require wash
ing, and under some conditions, make it unnecessary
to perform a previous grinding operation.
Specifications covering the basic No. 26 HYPROLAP Lapping Machine
to which the Through-Feed Arrangement is applied are given in Catalog No.
852. Details of design and construction of the basic machine are also given
in this catalog. NORTON Engineers will be pleased to provide such addi
tional details as may be desired, and will provide recommendations covering
a specific job upon receipt of full details including dimensions and shape
of parts, metallurgical content, and production required.
SUPPLEMENT TO CATALOG NO. 852-9-52
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SIMPLIFIED CONTROLS MAKE THE
NORTON ?26 HYPROLAP AN IDEAL
MACHINE FOR WOMEN OPERATORS
ON HIGH PRECISION. HIGH PRO
DUCTION WORK.
Drive
© Direct motor drive only.
° One motor drives the laps and
the work; a second the coolant
pump
coating the filter units; a fourth
the hydraulic pump.
® Upper lap spindle driven by
power transmitted from the
drive shaft in the base through
a worm and worm wheel, stand
ard universal joint drive shaft
at the rear of the column and
multiple
shaft to the lap spindle.
; a third the pump for pre
vee belts from this
Upper Lap and Spindle
• Upper lap is carried on a heavy heat treated alloy steel spindle.
• The spindle runs on ball bearings and is carried in a hardened steel quill which
slides in a lapped hole in the column.
• Maximum strength and durability assured.
• The drive is through a multiple, vee belt mounted sheave on independent ball
bearings.
• Power is transmitted through a triangular, three lobe sliding splined shaft. Long
life a certainty.
i
Lower Lap
• Assembly permits complete removal as a unit.
• Mounted on a hollow vertical spindle driven from the main drive shaft in the.
machine base through a worm and worm wheel.
Page 6
Flat Lapping Machine
• Planetary motion housed within lower lap drive mechanism.
• Three subheads carry driving pins which, being adjustable, provide for varying
the amount of eccentric movement of the workholder.
• Combined rotation and eccentric movement of the workholder causes work to
slide along an ever-changing path.
• Repetition
• Heat-treated gears are continuously lubricated by circulating oil system.
• Workholder is driven in same direction as lower lap, but at slower speed.
of
abrasive grain crossing the path of the work is effectively broken up.
Work Drive for Cylindrical Lapping
• Workholder revolves about a stationary vertical pin set eccentrically with the
lap axis. Amount of eccentricity is adjustable.
• Difference in speeds of the rotating laps through frictional contact with the work
causes the workholder to rotate eccentrically about the pin and the work pieces
to rotate on their spindles.
r
THE OIL PUMP UNIT WITH ITS COMPARTMENT SO ARRANGED TO ALLOW THE CIRCULATION
OF AIR. THE SUSPENSION SPRINGS PREVENT THE TRANSMISSION OF VIBRATION TO MACHINE
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Page 7
Lap Raising
Mechanism
and Micrometer Stop
• Twin cylinders provide means for raising and lowering counterweighted upper
lap and spindle.
• Lapping pressure can be regulated within wide range.
• The stop limits the downward position of the upper lap.
Coolant
-
t
• Independent unit consists of a tank, pumps and filter unit.
• High efficiency filter uses battery of filtering plates pre-coated with prepared
diatomaceous earth.
® Coolant is conveyed through a distributor head built into the upper lap spindle
flange.
® Counterweighted splash guard around work and laps protects operator from
coolant.
System
Controls
s
• Three push buttons are provided for the drive motors.
• One lever starts and stops the wheel; dual levers raise and lower the upper lap;
a third controls the truing device; a fourth adjusts the lapping pressure.
DIRECT MOTOR DRIVE WITH
VEE BELTS GIVES ABUNDANT
POWER AND ASSURES SMOOTH
UNIFORM MOVEMENT OF THE
LAPS. THE DOUBLE CLUTCH
PROVIDES FOR BRAKING AS
WELL AS TRANSMISSION
OF POWER
Page 8
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Page 9
■
8
THE SPEED OF THE TRUING
ARM IN EITHER DIRECTION IS
ADJUSTABLE INDEPENDENTLY
AND IS HYDRAULICALLY OP
ERATED, OIL BEING FILTERED
BEFORE ENTERING THE CYL
INDER. BOTH LAPS ARE TRUED
SIMULTANEOUSLY, THE DIA
MOND FOR EACH BEING INDE
PENDENTLY ADJUSTABLE.
Truing Device
• Hydraulic controlled swinging arm trues the upper and lower lap faces simul
taneously.
• Adjustable, three point mounting; truing arm can be set so lap faces are dressed
absolutely parallel and perpendicular to their axes.
• Hydraulically operated to give slow and uniform motion necessary for truing.
• Individual
• An integral valve reverses the direction of the dresser and is controlled by a
lever conveniently located upon the head of the valve.
• Oil is filtered before entering the dresser mechanism.
• Filter is conveniently located for attention.
• Diamonds are mounted in independently adjustable heads.
adjustments control the truing arm speed in both directions.
;
!
Pressure Regulator
• Regulating device with a dial gage shows pressure at which machine is being
operated.
• Control lever regulates the pressure in the system from 20 to 100 pounds per
square inch.
• The upper lap is counterweighted so that only hydraulic pressure is applied to
the work.
Page 10
NO. 26 HYPROLAP WITH LAP
PING LUBRICANT TANK AND
FILTER SHOWING MOTORS
DRIVING COOLANT AND FIL
TER PLATE PRE-COATING
PUMP.
Hydraulic System
• Heavy steel tubing and oil resistant hose used throughout.
• Hydraulic pump mounted on springs to dampen vibration.
• Pump unit is assembled in a separate compartment
in
the base allowing air to
circulate, preventing transmission of heat to machine base.
Workholders for Flat Work
• One type known as “
plate type”; a second known as “
two-piece type.
• Plate type:-work pieces lie in openings cut in a circular disc and travel between
the revolving lap faces.
• Two-piece type:-work
by three center driving pins, and a split, non-rotating
pieces held in adaptors rotated between a hub, driven
(but free to oscillate)
adjustable ring.
• Two piece workholders are made in two styles.
1.
Friction type using plain work adaptors.
2.
Sprocket type, with positively driven toothed work adaptors.
»>
■l
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:
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Workholder
for Cylindrical Work
UPPER LAP RAISED AND WORK IN
POSITION FOR FLAT LAPPING.
PRESSURE ON WORK IS CON
TROLLED AT LEFT.
• Consists of a center plate with hardened steel spindles inserted about its periph-
ery.
• Spindles are not placed radially, but have their axes tangent to a small circle at
the center.
• Solid cylindrical pieces are held in a plate type work holder having openings
of their approximate shape and are free to rotate without changing their axial
position.
Standard Equipment
• One pair abrasive wheel laps mounted in chucks.
• Main drive motor — 10 h.p. for flat work — 5 h.p. for cylindrical.
• One hydraulic pump with 24 h.p., 1800 r.p.m. motor.
• One coolant pump with 34 h.p., 1800 r.p.m. motor.
• Filter pre-coating pump with 24 h.p., 1800 r.p.m. motor.
• One coolant tank and filter.
• One hydraulic lap truing device (without diamonds).
• Standard guards and necessary wrenches.
• Sheave pulley for main drive motor and all vee belts required.
Extra Equipment
• Additional chucks for mounting 24" or 26" diameter laps.
• Workholders of standard types or special to suit the work to be lapped.
Page 12
s
■
THE COUNTER WEIGHTED UPPER LAP IS
LOWERED BY TWO DIAMETRICALLY OP
POSED HYDRAULIC PISTONS. LAPPING PRES
SURE BEING ESTABLISHED BY A PRESSURE
REGULATING MECHANISM. AN ADJUSTABLE
MICROMETER STOP LIMITS THE POSITION
TO WHICH THE UPPER LAP IS FED
j
N 4 370
Specifications
Laps:
Diameter
Width of face
Maximum distance between laps of
......................................................................................
...............................................................................
standard thickness
24" or 26"
6" or 1Y^
.............
4"
11
h
Capacity:
Flat work—thickness by longest dimension
Cylindrical work—diameter by length
........
Floor Space:
Total length and width
Height of machine
..................................................................
...........................................................................
Motors:
Main drive — flat lapping machine
cylindrical lapping machine
Hydraulic pump drive (included with machine equipment)
Coolant pump drive (included with machine equipment). .
Pre-coating pump drive (included with machine equipment)
Shipping
Net weight
Domestic shipping weight
Export shipping weight
Specifications: (Approximate)
....................................................................
.......................................
............................................
Boxed for export, contents of cases (cubic feet)
............................................
..............................
3 x 6" or 3 x ly
3 x 6" or 3 x 7 J4"
6' x 8'-6"
.... 7'-4"
10 h.p. 1200 r.p.m.
5 h.p. 1200 r.p.m.
% h.p. 1800 r.p.m.
h.p. 1800 r.p.m.
............. % h.p. 1800 r.p.m.
8500 lbs.
9400 lbs.
9700 lbs.
425
Page 13
STAIR-TILE • AGGREGATES •
' MACHINES • ENCAPSULATING MACHINES
NORBIDE PRODUCTS
MACHINES FOR
CYLINDRICAL GRINDING • SURFACE GRINDING • CYLINDRICAL
AND FLAT LAPPING • UNIVERSAL TOOL AND CUTTER GRINDING
UNIVERSAL MULTIPURPOSE GRINDING • SPECIALIZED GRINDING
CRANKPIN AND CRANKSHAFT BEARING GRINDING • CRANKSHAFT
LAPPING • CAM AND SHAPE GRINDING • CAM SHAFT GRINDING
ROLL GRINDING • AUTOPART REGRINDING • ATTACHMENTS AND
EQUIPMENT FOR SPECIAL WORK
COMPANY
WORCESTER 6, MASS.
U. S. A.
MACHINE DIVISION OFFICES
Hartford 7, 998 Farmington Avenue; New York 6, 61 Broadway;
Cleveland 14, 1306 East 55th Street; Detroit 8, 5805 Lincoln Avenue;
.
Chicago 32, 4737 South Christiana Avenue.
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