US4476656A
Expired / Lapsed
US
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Method of dressing a plated cubic boron nitride grinding wheel
Assignee: General Electric Co
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Filing: 1981-11-18
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Granted: 1984-10-16
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Expires: 2001-11-18
Abstract
Abstract A dressing method has been devised for plated grinding wheels having relatively coarse mesh microcrystalline cubic boron nitride abrasive. The method comprises lightly grinding cemented metal carbide (e.g. cobalt cemented tungsten carbide) with the grinding wheel before grinding the intended workiece. Wheels dressed in this manner have been found to obtain good surface finishes (16-18 RMS) while maintaining a free cutting aggressive action which gives high grinding rates.
Inventors
- 👤 Harold P. Bovenkerk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:39
CPC Classifications
B; B24; B24B; B24B53/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
45 words
A method of dressing a plated grinding wheel made with a single layer of microcrystalline cubic boron nitride grit which method comprises rotating said grinding wheel and lightly grinding a cemented metal carbide with several passes of the grinding wheel before grinding the intended workpiece.
Claim 2
Independent Claim
45 words
A method of dressing a plated grinding wheel made with a single layer of microcrystalline cubic boron nitride grit which method comprises rotating said grinding wheel and lightly grinding a cemented metal carbide with several passes of the grinding wheel before grinding the intended workpiece.
Claim 3
Dependent Claim
39 words
The dressing method of claim 1 which comprises making at least 8 passes of the grinding wheel over the cemented metal carbide at a wheel speed of about 1676 surface meters per minute and about 25 downfeed per pass.
Claim 4
Independent Claim
40 words
A method of dressing a grinding wheel made with microcrystalline cubic boron nitride grit which method comprises rotating said grinding wheel and lightly grinding a cemented metal carbide with several passes of the grinding wheel before grinding the intended workpiece.
Claim 5
Independent Claim
40 words
A method of dressing a grinding wheel made with microcrystalline cubic boron nitride grit which method comprises rotating said grinding wheel and lightly grinding a cemented metal carbide with several passes of the grinding wheel before grinding the intended workpiece.
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) | 1987-10-16 | 1988-04-16 | 1988-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-16 | 1992-04-16 | 1992-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-16 | 1996-04-16 | 1996-10-16 | $7700.00 | Window Closed / Lapsed |