Norton No. 16FC Vertical Lapping Machine Other

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NORTON
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VERTICAL
LAPPING MACHINE
The Norton No. I6FC Vertical Lapping Machine
surfaces flat or cylindrical work within it's capacity to closer tolerances, better finish and quality of surface, than is obtainable by any
other commercial method.
This machine is capable of producing optically flat surfaces and thickness tolerances in mil
lionths. Producing work to fine repetitive accu racy, it serves to reduce inspections and to
eliminate the need for selective assembly.
The No. I6FC Lapping Machine is particularly efficient for production of size blocks, plug
gages,
Valve plates, the component parts of metering pumps, refrigerator compressors and Diesel en
gine injectors are some of the many other parts
also within this category.
sides of ball races and thrust washers.
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N-5803A
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The machine is arranged with horizontally opposed cast iron laps. The upper lap is free floating to adjust itself to the work. Normally it does not rotate, but it may be released for free rotation during lap face dressing or for release of thin work tending to adhere to the lap during unloading.
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N-5565
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DESIGN
HIGHLIGHTS
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The lower lap is rotated in all cylindrical lapping, for most flat lapping and for lap
dressing. When the machine must function with both laps non-rotatingthe most sat isfactory method of finishing gage blocks
or similar tall flat pieces to exacting toler ancesthe No. I6FC will operate with the independent workholder drive mechanism.
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The Dual-Drive arrangement, besides provid ing for stationary or nonrotating lapping plates, permits selecting a range of work- holder speeds by simple belt change. This greater selectivity of work speeds adds to
the versatility of the machine so that many
unusual operations of lapping may be per
formed.
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N 5809
A
An automatically applied magnetic brake is provided on lap drive shaft. This prevents coasting of lower lap and possible marking of work should lap be raised while in motion.
It is particularly useful when lapping cylindri cal parts.
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N-5808A
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N-5921
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Compact positioning of controls and oper ating mechanisms assure maximum ease in
operation and speed production. Note shoulder-level upper lap raising and locking mechanisms, and eye-level mounting of elec
tric timer mechanism.*
♦(For Automatic Cycle Arrangement supplied
as extra)
Housing of electrical controls in elevated
trol cabinet facilitates maintenance and insures
against infiltration of floor level dust and dirt.
N-5567
con-
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FLAT LAPPING
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Flat lapping finishes opposite sides of a quantity of parallel work pieces simultaneously. The work is moved positively between the
lap faces by the motion imparted by the workholder. This motion, together with the proper distribution of the work, makes for uni form coverage df the lap in a constantly changing path.
Workholding equipment for flat lapping in the No. I6FC Lapping Machine is of two basic typesthe two-piece and plate types. Two different styles of the two-piece workholder are available. The preferred is the sprocket type in which a positive planetary motion is imparted to the adaptors or work retainers.
The other style Qf two-piece workholder is similar in action, but it imparts a frictional drive to the adaptors or work retainers instead
of the positive drive as provided in the sprocket type. The fric
tional drive type two-piece workholder is best suited to thicker
work pieces.
The plate type workholder, also known as the one-piece type is frequently desirable where the work pieces are large in size and
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thin. Variations of this workholder are often employed when the work to be lapped is irregularly shaped. In general however,
workholding devices are designed for the work in question. Samples or prints submitted with an inquiry permit the offering of the most efficient equipment.
Specially arranged work adaptors to support irregular pieces for lapping one flat face can be supplied. Spring mounted adaptor
inserts and cushion spacers make it possible to handle a large
variety of work.
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FLAT LAPPING
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holding
equipment
N-5651A
Sprocket Type Two- Piece WorkholderPre
ferable for thin pieces small enough to be nested
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at least three pieces to each adaptor.
work
Frictional Drive Two- Piece WorkholderPar
ticularly suited to thick work pieces within it's range.
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N -3 520
Plate
:
holderFor large and
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thin work, or for irregularly
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Type Work-
shaped work pieces.
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CYLINDRICAL
LAPPING
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In cylindrical lapping the work rolls and slides between the faces
of the top and bottom lapping plates. The lower lap imparts a rolling motion to the work causing the workholder to revolve upon a single eccenctric drive pin in the center of the planetary mecha nism. The work is carried in slots or on legs or fingers of a suitable
workholder. The slots or legs are not radial but are disposed tan gentially to impart additional slipping between the lap faces and
the work pieces. The speed ratio of the eccentric drive pin provides a breakup of
work speed relative to the lap, and distributes the wear uniformly over the entire lap surface.
The best results are obtained in cylindrical lapping when the greatest number of work pieces are carried by the workholder. The greatest accuracy is obtained when the work forms a single
track on the lap and when the face of the lap is narrowed to the exact length of the work. It is possible to use wider laps when a variety of sizes are to be handled, but in this case the work must be staggered or doubled up to insure complete coverage of the
lap face.
In general however, the lap size chosen should suit the length of the work piece. Large diameter laps for long parts, and small
diameter laps for short pieces are
I 6FC Machine
the best lapping action may be provided.
are available in diameters from 8" to 18" so that
desirable. Laps for the No.
Workholders for cylindrical lapping are generally of two styles.
One, identified as the piston pin type, is ideal for tubular work as it provides means for loading outside the machine and remov ing a load intact after lapping. The lapped surface does not contact the holding device and is not marred in any way. A
second workholder being unloaded and reloaded while lapping pro
ceeds will increase production appreciably.
The other style is known as the slotted plate type. This is particu
larly suitable for solid plungers, or cylindrical pieces with small, eccentric, or blind holes.
Plug gages require special workholders to prevent marring of the
finished surface. Floating center type workholders which
complish this are available for all plug gages of standard design.^^^
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CYLINDRICAL
LAPPING
work holding equipment
Piston Pin Type Work- holderIdeal for tubular
work as it provides means for loading outside the machine and for removing the finished work load in tact.
Slotted Plate Type WorkholderParticularly
suited for solid plungers
or cylindrical pieces with small, eccentric, or blind holes.
Special 8" diameter Lap with special workholder
This arrangement is ideal for very small work of small diameter such as screw
thread measuring wires and
other parts from 1/16" to 3/16" diameter up to 2*'
in length.
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LAPS
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CAPACITY
The laps supplied with the No. I6FC Lapping Machine are made from specially close grained soft gray iron that is suitably heat-treated. They
are ground and lapped and ready for use.
For flat lapping they are used in their full width of face. For cylindrical
lapping they are normally machined to special widths as required for work piece size.
For flat work of large area, and for perforated pieces, serrated laps are supplied. Cylindrical lapping and fine finish flat lapping require smooth
face laps.
For selected applications, bonded abrasive laps are available for this
machine.
The No. I6FC Machine has the capacity to accomodate a wide range of work. A variety of parts within it's capacity are illustrated below,
Larger pieces can be handled with suitable workholding fixtures provide the production requirements warrant it. It is recommended that details of each specific job be submitted to Norton Lapping Engineers so that the best selection of laps and workholders may be supplied.
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N-5819A
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4
Checking Norton
Laps for flatness
to millionths of an
inch.
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Checking work lap ped to .00001" for thickness and par allelism in No. 16- FC Lapping Ma chine.
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N-5914
SPECIFICATIONS
CAPACITY
Flat work (thickness by longest dimension) Cylindrical work (diameter by length) . .
LAPS
Diameter Max. width of face
Speed of lower
Distance between, maximum. . . .
Floor space, .... ...................................
Height of machine (without timer). . .
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8", 14", 16" or 18"
.2", 3", 4" or 5"
... .40 to 60 r.p.m.
3" x 5" 3" x 5"
27" x 40"
W
3l/2
max.
max.
Height of machine, with timer Motor required Weightsapproximate; with motor
Net ................................................
Domestic shipping
Export shipping ............................
Export shipping dimensions
Cubic contents
Export shipping dimensions, with timer.
Cubic contents, with timer
Because of variations in equipment and castings, exact weights and cubics cannot be given. The above weights are in pounds; cubics are in cubic feet. Motor weights are included.
The descriptions, illustrations and specifications in this booklet are correct at the time of printing.
Since the policy of Norton Company is constantly to improve its machines, those built at later
data maey differ from these details to some extent.
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I h.p., 1750 r.p.m.
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2' 7" x 3* 8" x 5' 2"
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..........................................2* 7" x 3' 8" x 5'
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65"
1300
lbs.
1480
lbs.
1625
lbs.
43.4 cu. ft. 10"
58.0 cu. ft.
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NORTmN:
GRINDING cmd LAPPING
GRakinq better products to make other products better
i
10" x 36" Somiautomotic Cylindrical Grinder
10"
x
20" Universal Grinder
products
ABRASIVES
FLOOR AND STAIR TILE o AGGREGATES NORBIDE
PRODUCTS ENCAPSULATING MACHINES
CYLINDRICAL GRINDING ® SURFACE GRINDING CYLINDRICAL AND FLAT LAPPING UNIVERSAL TOOL
AND CUTTER GRINDING UNIVERSAL GRINDING
SPECIALIZED GRINDING CAM AND SHAPE GRINDING CRANKPIN AND CRANKSHAFT BEARING GRINDING
VALVE GRINDING ROLL GRINDING SPECIAL
AIRCRAFT PRODUCTION GRINDING ATTACHMENTS
AND EQUIPMENT FOR SPECIAL WORK
GRINDING WHEELS REFRACTORIES
MACHINES FOR
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No. 20 Cutter and Tool Grinder
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No. 2 CAM-O-MATIC* Automatic Cam Grinder
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Form 212-3P-1
-53-2500
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MACHINE DIVISION OFFICES
Hartford 7 New York 6 Cleveland 3 Detroit 8
Chicago 32
•TRADE-MARK REG. U.S. PAT.
. . 998 Farmington Avenue
. . 1306 East 55th Street
. 5805 Lincoln Avenue 4737 South Christiana Avenue
61 Broadway
EXPORT: NORTON BEHR-MANNING OVERSEAS INC.
CABLE
ADDRESS: NORBEMO, WORCESTER
8"
x
24" Surface Grinder
No. 26 HYPROIAP* lapping
Printed in
Machine
United Stote* of America
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