Patent US3859756A successfully refreshed from Google Patents.
US3859756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and device for grinding the end faces of cylindrical bodies, particularly of rollers for rolling bearings
Assignee: SKF Industrie SpA
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Filing: 1972-10-17
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Granted: 1975-01-14
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Expires: 1992-10-17
Abstract
Abstract A method and a device for grinding the flat end faces of rollers for rolling bearings are described. The rollers, which move along a substantially circular path between two rotary grinding wheels disposed one in front of the other, are carried by a rotating transport member, and rotate about its own axis. Said rollers roll on one or more rolling tracks which are coaxial with the axis of the transport member. The rotation of the rolling tracks and that of the transport member are independent of one another.
Inventors
- 👤 Giorgio Zerbola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:19
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/10; B24B7/16; B24B7/162; B23; B23Q; B23Q7/00; B23Q7/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
A device foR grinding the flat end faces of cylindrical bodies comprising: a rotatable transport member for carrying said bodies along a substantially circular path between two rotary grinding wheels disposed one in front of the other; first actuating means for effecting rotation of said transport member at a first predetermined angular speed variable within a predetermined range; an internal cylindrical rotatable rolling track for said bodies coaxial with said transport member; second actuating means for effecting rotation of said internal rolling track at a second predetermined angular speed variable within a prefixed range; an external cylindrical rotatable rolling track for said bodies, coaxial with said transport member; and third actuating means for effecting rotation of said external rolling track at a third predetermined angular speed variable within a predetermined range; Whereby the ratio between the angular speeds of said internal rolling track and said external rolling track can be selected so that rotation of said cylindrical bodies takes place substantially without sliding between said bodies and said rolling tracks.
Claim 2
Independent Claim
170 words
A device foR grinding the flat end faces of cylindrical bodies comprising: a rotatable transport member for carrying said bodies along a substantially circular path between two rotary grinding wheels disposed one in front of the other; first actuating means for effecting rotation of said transport member at a first predetermined angular speed variable within a predetermined range; an internal cylindrical rotatable rolling track for said bodies coaxial with said transport member; second actuating means for effecting rotation of said internal rolling track at a second predetermined angular speed variable within a prefixed range; an external cylindrical rotatable rolling track for said bodies, coaxial with said transport member; and third actuating means for effecting rotation of said external rolling track at a third predetermined angular speed variable within a predetermined range; Whereby the ratio between the angular speeds of said internal rolling track and said external rolling track can be selected so that rotation of said cylindrical bodies takes place substantially without sliding between said bodies and said rolling tracks.
Claim 3
Dependent Claim
124 words
The device of claim 1, including: a cage of annular shape provided with radial grooves for said bodies in the radially innermost part of said cage; a disk disposed inside said cage and coaxial therewith having an outer cylindrical surface constituting said internal rolling track, a motor being provided for rotating said disk; a first belt which is wound about at least a part of said bodies and constitutes said external rolling track, said first belt being driven by a drive pulley; an annular groove provided in said disk for cooperating with thin plates protruding from the inner surface of said cage, so as to laterally guide said cage with respect to the disk during the rotation of the former relative to the latter.
Claim 4
Dependent Claim
32 words
The device of claim 2 wherein said cage has an annular groove on its outer periphery and having a radial height to allow said first belt to be wound about said bodies.
Claim 5
Dependent Claim
25 words
The device of claim 3, wherein said second belt coacts with the surface of the radially outermost part of said annular groove of said cage.
Claim 6
Dependent Claim
160 words
Method for grinding the flat end faces of cylindrical bodies, which comprises: carrying said bodies around a substantially circular path between two rotary grinding wheels disposed one in front of the other by a rotating transport member actuated by first actuating means; rolling said bodies on a rotating internal cylindrical rolling track coaxial with said transport member, said internal rolling track being actuated by second actuating means; simultaneously rolling said bodies on a rotating external cylindrical rolling track coaxial with said transport member, said external rolling track being actuated by third actuating means; controlling said actuating means to rotate said transport member, said internal track and said external track at predetermined angular speeds each of which can be varied within a predetermined range; and selecting the ratio between the angular speeds of said internal rolling track and said external rolling track so that rotation of said cylindrical bodies takes place substantially without sliding between said bodies and said rolling tracks.
Claim 7
Dependent Claim
160 words
Method for grinding the flat end faces of cylindrical bodies, which comprises: carrying said bodies around a substantially circular path between two rotary grinding wheels disposed one in front of the other by a rotating transport member actuated by first actuating means; rolling said bodies on a rotating internal cylindrical rolling track coaxial with said transport member, said internal rolling track being actuated by second actuating means; simultaneously rolling said bodies on a rotating external cylindrical rolling track coaxial with said transport member, said external rolling track being actuated by third actuating means; controlling said actuating means to rotate said transport member, said internal track and said external track at predetermined angular speeds each of which can be varied within a predetermined range; and selecting the ratio between the angular speeds of said internal rolling track and said external rolling track so that rotation of said cylindrical bodies takes place substantially without sliding between said bodies and said rolling tracks.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |