Automatic workpiece thickness control for dual lapping machines
First Claim
1. An automatic sizing apparatus for workpieces being lapped by a machine having rotatable upper and lower lap plates comprising,(a) a responsive workpiece sizing means attached to the upper lap plate for rotation therewith,(b) means for adjustably connecting said responsive workpiece sizing means concentrically of and in parallelism to the upper lap plate,(c) a workpiece sizing assembly including means for continuously indicating the thickness of the workpiece during the lapping operation,(d) means for adjustably supporting said workpiece sizing assembly circumferentially of and in radial relation to said responsive workpiece sizing means,(e) said workpiece sizing assembly including a pivotal lever, one end of which supports a means in contact with said responsive workpiece sizing means with its opposite end adapted to engage and actuate a sensing probe,(f) a sensing probe carried in a fixed position relative to said lever and including a moveable element in contact with and moveable in response to any pivotal movement of said lever, and(g) means for pivotally connecting said lever to said workpiece sizing assembly.
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Accused Products
Abstract
A device for automatically sizing (thickness control) a workpiece of a double wheeled lapping machine, during the lapping process with simultaneous runout of the lower lap compensation. The device provides an annular ring attached in parallelism to the upper plate, together with a roller follower having contact with the under surface of the ring, with the follower pivoted upon an adjustable mounting arm attached to a vertically extending stationary post mounted beyond the circumference of the ring on a supporting shelf formed as a part of the machine casing. A movement responsive probe is in contact with the follower and responds to any deviation in flatness of the workpiece as it is transmitted therefrom onto the lapping surfaces of dual lap plates during the lapping thereof.
28 Citations
15 Claims
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1. An automatic sizing apparatus for workpieces being lapped by a machine having rotatable upper and lower lap plates comprising,
(a) a responsive workpiece sizing means attached to the upper lap plate for rotation therewith, (b) means for adjustably connecting said responsive workpiece sizing means concentrically of and in parallelism to the upper lap plate, (c) a workpiece sizing assembly including means for continuously indicating the thickness of the workpiece during the lapping operation, (d) means for adjustably supporting said workpiece sizing assembly circumferentially of and in radial relation to said responsive workpiece sizing means, (e) said workpiece sizing assembly including a pivotal lever, one end of which supports a means in contact with said responsive workpiece sizing means with its opposite end adapted to engage and actuate a sensing probe, (f) a sensing probe carried in a fixed position relative to said lever and including a moveable element in contact with and moveable in response to any pivotal movement of said lever, and (g) means for pivotally connecting said lever to said workpiece sizing assembly.
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14. A method of autosizing workpieces being lapped by a machine having rotatable upper and lower lap plates and for compensating for plate runout during the lapping operation comprising the steps of mounting an actuating member in parallelism to the upper lap plate for rotation therewith about a vertical axis, providing a parallelism sensing element having a 2:
- 1 end responsive pivotal movement transmitted thereto by the actuating member during its rotation with the upper lap plate, and placing a vertically moveable probe in contact with one end of the pivotal sensing element so as to be moved thereby and to present a visual readout indicating the continuous reading thickness of the workpiece being lapped as sensed by the pivotal movement of the sensing element.
- View Dependent Claims (15)
Specification