Patent US4048763A successfully refreshed from Google Patents.
US4048763A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for surface-, plane-parallel-, and plain lapping
Assignee: JMJ WERKZEUGMASCHINEN GmbH fur FEINBEARBEITUNG
•
Filing: 1976-02-19
•
Granted: 1977-09-20
•
Expires: 1996-02-19
Abstract
Abstract A method for surface-, plane-parallel-, and external plain lapping of starting work pieces with a lapping abrasive which is fed on a circularly shaped lapping abrasive track in determined quantity to the starting work pieces, and by which the starting work pieces are machine formed into face, plane-parallel or round finished work pieces. The lapping abrasive is fed to the starting work pieces on at least one additional circularly shaped lapping abrasive track or channel arranged concentrically to the first circularly shaped lapping abrasive track and having a different diameter, and in a differently dosed quantity relative to the first lapping abrasive quantity and separate from it.
Inventors
- 👤 Jos M. Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:27
CPC Classifications
B; B24; B24B; B24B37/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
A method for surface lapping, plane-parallel lapping and plain lapping of workpieces with a lapping abrasive, comprising the steps of feeding a definite quantity of a lapping abrasive on a work piece in at least two radially spaced apart and operatively separated circular paths on the work piece which paths, respectively, are concentric to one another and have different diameters, feeding the lapping abrasive separately in different dosed quantities in each of said at least two paths, respectively, and machining said work piece with said lapping abrasive in said at least two radially spaced apart and operatively separated paths and in said differently dosed quantities, respectively, into a surface finished, plane-parallel finished and plain finished work piece, respectively.
Claim 2
Independent Claim
118 words
A method for surface lapping, plane-parallel lapping and plain lapping of workpieces with a lapping abrasive, comprising the steps of feeding a definite quantity of a lapping abrasive on a work piece in at least two radially spaced apart and operatively separated circular paths on the work piece which paths, respectively, are concentric to one another and have different diameters, feeding the lapping abrasive separately in different dosed quantities in each of said at least two paths, respectively, and machining said work piece with said lapping abrasive in said at least two radially spaced apart and operatively separated paths and in said differently dosed quantities, respectively, into a surface finished, plane-parallel finished and plain finished work piece, respectively.
Claim 3
Dependent Claim
60 words
The method as set forth in claim 1, further comprising the steps of feeding a larger quantity of the lapping abrasive to an outermost of said at least two circular radially spaced apart and operatively separately circular paths on the work piece so that a removal of working material is greater at the outermost corresponding position on the work piece.
Claim 4
Dependent Claim
60 words
The method as set forth in claim 1, further comprising the steps of feeding a larger quantity of the lapping abrasive to an innermost of said at least two circular radially spaced apart and operatively separately circular paths on the work piece so that a removal of working material is greater at the innermost corresponding position on the work piece.
Claim 5
Dependent Claim
62 words
The method as set forth in claim 1, wherein said at least two radially spaced apart circular paths are maintained completely circular and operatively separated from one another spaced by the different diameters on the work piece by feeding the lapping abrasive in each of said paths continuously and simultaneously at a uniform plurality of radially equal locations of each circular path.
Claim 6
Dependent Claim
85 words
The method as set forth in claim 4, further including the step of separately forming first completely spaced full circular tracks continuously filled with the lapping abrasive and concentric to each other, respectively, on an upper lapping wheel carrier, and flowing the lapping adhesive from said spaced circular tracks through the upper lapping wheel carrier onto the work piece into said radially spaced apart circular paths, respectively, to said plurality of said radially equal locations on each of said radially spaced apart circular paths, respectively.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-19 | 1981-03-21 | 1981-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-19 | 1985-03-21 | 1985-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-19 | 1989-03-21 | 1989-09-20 | $7700.00 | Window Closed / Lapsed |