US3925936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lapping machine
Assignee: Individual
•
Filing: 1975-01-20
•
Granted: 1975-12-16
•
Expires: 1995-01-20
Abstract
Abstract A lapping machine in which there is provided a tool or lapping tools, cages accommodating workpieces being lapped, and a central shaft drive rotating a sun wheel which is operatively connected to the cages. The sum wheel is in permanent force transmitting connection with the cages independently of their relative position. Apart from the main motion transmitted from the sun wheel, there is imparted to the cages an additional variable and cyclic motion independent of the sun wheel, whereby the lapping tool and the workpieces or cages will receive at least dual-component compound relative motion so that an imaginary pattern defined by the intersection points between the workpiece surfaces being lapped and the lapping tool become more dense and uniform.
Inventors
- 👤 Petr Nikolaevich Orlov
- 👤 Jury Ivanovich Nesterov
- 👤 Vasily Yakovlevich Kudashov
- 👤 Alexandr Vasilievich Zimnyakov
- 👤 Irina Nikolaevna Ermakova
- 👤 Igor Vasilievich Bogomolov
- 👤 Efim Matveevich Nirman
- 👤 Vladimir Dmitrievich Sokolov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:23
CPC Classifications
B; B24; B24B; B24B37/00; B24B37/04; B24B37/07; B24B37/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
208 words
A lapping machine for a two-side lapping of flat surfaces of workpieces, comprising a fixed disk lapping tool having a central axis, cages in which the workpieces are placed and brought into contact with the working surface of the lapping tool, the cages having axes, a first drive for simultaneously rotating the cages with the workpieces around the central axis of the lapping tool and the axes of the cages, said drive including a shaft eccentric with respect to the central axis of the lapping tool, a sun wheel rigidly mounted on said shAft, said cages having planet gears meshing externally with said sun wheel, and operably connected by a gear train with a main drive rotating the cages and eccentric shaft around the axis of the lapping tool and around the axes of the cages, a flat disk parallel to the lapping tool, sockets in said disk, said cages being placed in said sockets coaxially to the eccentric shaft, a second drive, a central gear located on the axis of the lapping tool operably connected to said flat disk and a train of replacable gears with said second drive for imparting rotation to the flat disk together with the cages around the axis of the eccentric shaft.
Claim 2
Dependent Claim
208 words
A lapping machine for a two-side lapping of flat surfaces of workpieces, comprising a fixed disk lapping tool having a central axis, cages in which the workpieces are placed and brought into contact with the working surface of the lapping tool, the cages having axes, a first drive for simultaneously rotating the cages with the workpieces around the central axis of the lapping tool and the axes of the cages, said drive including a shaft eccentric with respect to the central axis of the lapping tool, a sun wheel rigidly mounted on said shAft, said cages having planet gears meshing externally with said sun wheel, and operably connected by a gear train with a main drive rotating the cages and eccentric shaft around the axis of the lapping tool and around the axes of the cages, a flat disk parallel to the lapping tool, sockets in said disk, said cages being placed in said sockets coaxially to the eccentric shaft, a second drive, a central gear located on the axis of the lapping tool operably connected to said flat disk and a train of replacable gears with said second drive for imparting rotation to the flat disk together with the cages around the axis of the eccentric shaft.
Claim 3
Dependent Claim
48 words
The lapping machine as claimed in claim 1, in which an auxiliary gear train is provided between the eccentric shaft and the main drive rotating the eccentric shaft around its own axis in addition to said rotation of the eccentric shaft around the axis of the lapping tool.
Claim 4
Dependent Claim
199 words
A lapping machine for two-side lapping of workpieces comprising a lapping tool, cages in which the workpieces are placed and brought into contact with the working surface of the lapping tool, a dressing ring, a first drive for rotating the lapping tool around its axis and a second drive for rotating a cage and a dressing ring around a common axis, said dressing ring having outer teeth, support rollers retaining said cage and said dressing ring at one side, said second drive including a sun wheel coaxial to the lapping tool, the sun wheel having an axle, two idle gears, axles on which said idle gears are mounted, two movable pull rods connecting the axles of the two idle gears with the central axle of the lapping tool to the axle of the sun wheel and to pull rods forming a parallelogram linkage for adjusting the relative spacing of said gears meshing simultaneously with the sun wheel and the teeth of the dressing ring, said gears being brought to the dressing ring on the side opposite to the support rollers, and a drive having a pull rod for drawing apart or together said gears connected with the parallolegram linkage.
Claim 5
Dependent Claim
199 words
A lapping machine for two-side lapping of workpieces comprising a lapping tool, cages in which the workpieces are placed and brought into contact with the working surface of the lapping tool, a dressing ring, a first drive for rotating the lapping tool around its axis and a second drive for rotating a cage and a dressing ring around a common axis, said dressing ring having outer teeth, support rollers retaining said cage and said dressing ring at one side, said second drive including a sun wheel coaxial to the lapping tool, the sun wheel having an axle, two idle gears, axles on which said idle gears are mounted, two movable pull rods connecting the axles of the two idle gears with the central axle of the lapping tool to the axle of the sun wheel and to pull rods forming a parallelogram linkage for adjusting the relative spacing of said gears meshing simultaneously with the sun wheel and the teeth of the dressing ring, said gears being brought to the dressing ring on the side opposite to the support rollers, and a drive having a pull rod for drawing apart or together said gears connected with the parallolegram linkage.
Claim 6
Dependent Claim
55 words
The lapping machine as claimed in claim 3 including a common arcuate number spring loaded along the axis of symmetry of the dressing ring and the support rollers on which said rollers are mounted, and said pull rods for drawing apart and together said gears being adapted for movement along the same axis of symmetry.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |