Patent US4475321A successfully refreshed from Google Patents.
US4475321A
Expired / Lapsed
US
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Method of trueing of grinding disks
Assignee: Saint Gobain Diamantwerkzeuge GmbH and Co KG
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Filing: 1984-01-23
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Granted: 1984-10-09
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Expires: 2004-01-23
Abstract
Abstract A method of trueing grinding disks comprises the steps of engaging the outer layer of a grinding disk during rotation thereof with a predetermined speed with a driven diamond trueing roll and spaced from the trueing roll with a trueing disk having a peripheral speed of 0.5-6 meters per second and preferably 1 meter per second relative to the peripheral speed of the grinding disk. The trueing of the grinding disk can be performed while the grinding disk grinds a workpiece.
Inventors
- 👤 Hans-Robert Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:59
CPC Classifications
B; B24; B24B; B24B53/00; B24B53/04; B24B53/053; B24B53/003
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
150 words
A method for trueing a grinding disk having an outer layer of diamond or cubic crystalline boron nitride during rotation thereof with a predetermined circumferential speed, comprising the steps of engaging said outer layer of said grinding disk with a driven but axially immovable diamond trueing roll so as to profile and true said layer; and directly engaging said outer layer of said grinding disk at a location spaced from said trueing roll with an additional separately driven trueing disk with an outer layer of ceramically or bakelitically bound silicon carbide or corundum, rotating with a relative peripheral speed of 0.5-1.0 meters per second relative to the peripheral speed of said grinding disk and continuously adapting itself to said profile of said grinding disk so as not to enter and alter said profile but to offset the binder relative to a working surface of the grains of said grinding disks.
Claim 2
Independent Claim
150 words
A method for trueing a grinding disk having an outer layer of diamond or cubic crystalline boron nitride during rotation thereof with a predetermined circumferential speed, comprising the steps of engaging said outer layer of said grinding disk with a driven but axially immovable diamond trueing roll so as to profile and true said layer; and directly engaging said outer layer of said grinding disk at a location spaced from said trueing roll with an additional separately driven trueing disk with an outer layer of ceramically or bakelitically bound silicon carbide or corundum, rotating with a relative peripheral speed of 0.5-1.0 meters per second relative to the peripheral speed of said grinding disk and continuously adapting itself to said profile of said grinding disk so as not to enter and alter said profile but to offset the binder relative to a working surface of the grains of said grinding disks.
Claim 3
Dependent Claim
33 words
The method as defined in claim 1, wherein the trueing of the grinding disk is performed with a relative speed between said trueing disk and said grinding disk of 0.5-0.6 meter per second.
Claim 4
Dependent Claim
25 words
A method as defined in claim 1, wherein said true disk is pressed with a constant force against said outer layer of said grinding disk.
Claim 5
Dependent Claim
31 words
A method as defined in claim 1, wherein said trueing of said grinding disk by said trueing roll and said trueing disk is performed while said grinding disk grinds a workpiece.
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) | 1987-10-09 | 1988-04-09 | 1988-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-09 | 1992-04-09 | 1992-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-09 | 1996-04-09 | 1996-10-09 | $7700.00 | Window Closed / Lapsed |