Title: Planetary-type lapping machine for lapping a group of workpieces

Abstract: A method and apparatus for lapping workpieces or components. A planetary-type plane lapping machine has a stationary lapping disc and a rotary driven rotary lapping disc. A cage having a socket for holding work to be lapped is disposed between the stationary lapping disc and the rotary lapping disc. The cage is a planet gear driven by a sun gear and a ring gear of a sun-and-planet gear. A differential gear train couples the sun gear with the rotary disc for driving the rotary lapping disc and a differential mechanism controls the direction of wear of the working surfaces of the lapping discs. In order to carry out the method disclosed the rotary lapping disc is driven rotationally at substantially twice the speed at which the center of the cage rotates about the axis of rotation of the rotary lapping disc. This precludes the development of forces of the work being lapped from acting on the cage.

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Inventors: Orlov, Petr N. (Moscow, SU)
Khasanov, Mukim M. (Dushanbe, SU)
Nedospasov, Vladimir G. (Dushanbe, SU)
Peshkov, Valery A. (Dushanbe, SU)
Savelova, Alexandra A. (Moscow, SU)

Application Number: 829151
Filing Date: 1977-08-30
Publication_date: 1979-06-12
Assignee: Moskovskoe Vysshee Tekhnicheskoe Uchilische Imeni N.E. Baumana (SU)
Primary Class(es): 451/291 451/269
Other Classes:
US Patent Ref:

2963830	Dec, 1960	Hook	51/131.
2973605	Mar, 1961	Carman	51/133.
3089292	May, 1963	Hunt	51/118.
3097458	Jul, 1963	Richmond	51/118.
3662498	May, 1972	Caspers	51/118.

Other Refs: 1577322

Jan, 1970	DE

Primary Examiner: Godici, Nicholas P.
Assistant Examiner:
Attorney: Burns; Robert E., Lobato; Emmanuel J., Adams; Bruce L.