Patent US4205489A successfully refreshed from Google Patents.
US4205489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for finishing workpieces on surface-lapping machines
Assignee: Individual
•
Filing: 1977-12-08
•
Granted: 1980-06-03
•
Expires: 1997-12-08
Abstract
Abstract Apparatus for changing the rotation speed of a workpiece holder axle relative to the axle of a drive shaft, the tangential acceleration of this movement, and the pressure between the surface of workpieces and lapping tools. These changes are set cyclically, directly in the apparatus for finishing. The machines for the realization of such control of the finishing process are equipped with units which are capable of regulating the value of the complex eccentricity of holder rotation and have independent drive systems for adjusting the kinematic factors in the course of finishing. This ensures uniform abrasion over the entire working surface of the lapping tools.
Inventors
- 👤 Petr N. Orlov
- 👤 Ivan A. Loginov
- 👤 Vladimir E. Beiden
- 👤 Boris S. Smolyaninov
- 👤 Anatoly S. Balabanov
- 👤 Vladimir V. Scherbakov
- 👤 Anatoly V. Chamov
- 👤 Konstantin F. Skvortsov
- 👤 Alexandr S. Chizhov
- 👤 Mukim M. Khasanov
- 👤 Valery A. Peshkov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:07
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/08
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
152 words
A surface lapping machine for lapping workpieces by abrading thereof comprising, a workholder having sockets for holding workpieces therein to be lapped and an axis of rotation, two driven lapping tools between which the workholder is driven, a drive shaft, a hollow shaft, and a spindle each driven at variable speeds about an axis of rotation, a first planetary gear mechanism comprising a first planet pinion driven by said drive shaft and a first sun gear driven by said hollow shaft, and a second planetary gear mechanism having a second planet pinion and a second sun gear driven by said spindle, means mounting said second planet pinion on said first planet pinion of said first planetary gear mechanism, said workholder being eccentrically mounted on said second planet pinion for cummulatively developing a varying eccentricity of the axis of rotation of the workholder relative to the axis of rotation of said drive shaft.
Claim 2
Dependent Claim
152 words
A surface lapping machine for lapping workpieces by abrading thereof comprising, a workholder having sockets for holding workpieces therein to be lapped and an axis of rotation, two driven lapping tools between which the workholder is driven, a drive shaft, a hollow shaft, and a spindle each driven at variable speeds about an axis of rotation, a first planetary gear mechanism comprising a first planet pinion driven by said drive shaft and a first sun gear driven by said hollow shaft, and a second planetary gear mechanism having a second planet pinion and a second sun gear driven by said spindle, means mounting said second planet pinion on said first planet pinion of said first planetary gear mechanism, said workholder being eccentrically mounted on said second planet pinion for cummulatively developing a varying eccentricity of the axis of rotation of the workholder relative to the axis of rotation of said drive shaft.
Claim 3
Dependent Claim
38 words
A surface lapping machine for lapping workpieces by abrading thereof according to claim 1, including an additional eccentric axle driven along a path of eccentricity relative to the drive shaft for assisting cumulative development of said varying eccentricity.
References Cited (Backward Citations)
US1509823A
Cited
US1208278A
Cited
US1610527A
Cited
DE416652C
Cited
US1937459A
Cited
US1972086A
Cited
US1963884A
Cited
US2518501A
Cited
US2668397A
Cited
CH241052A
Cited
US3380198A
Cited
SU483229A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-03 | 1983-12-03 | 1984-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-03 | 1987-12-03 | 1988-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-03 | 1991-12-03 | 1992-06-03 | $7700.00 | Window Closed / Lapsed |