US4001980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grinding machine
Assignee: AMBAR INVESTMENT Inc
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Filing: 1974-08-14
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Granted: 1977-01-11
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Expires: 1994-08-14
Abstract
Abstract The grinding machine of the invention uses a grinding wheel, and is primarily intended for descaling and cleaning billets before being rolled. An instrument for measuring, for instance, electromagnetic radiation is directed to the flow of matter and energy from the contact zone between the grinding wheel and a workpiece. Continuous measurement is performed and an output signal from the instrument is used for changing grinding data of the grinding machine to restore conditions in the flow of matter and energy from the contact zone.
Inventors
- 👤 Sven-Herman Wallin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:55
CPC Classifications
B; B24; B24B; B24B49/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
245 words
A grinding machine for skin-grinding the surface of a metal workpiece, comprising: a machine frame and work-supporting means carried thereby, a grinding wheel and frame-referenced feed means for movably positioning said wheel with respect to an exposed surface of a metal workpiece supported by said work-supporting means, driving means for continuously rotating said grinding wheel, traversing means for traversing said wheel and work-supporting means with respect to each other, whereby a flow of grinding matter will emanate in essentially a single direction of discharge away from the instantaneous zone of grinding contact with the workpiece in the course of a cutting traverse, said flow near the grinding region being characterized by radiant energy of magnitude indicative of the instantaneous depth of local grinding cut into the exposed surface of the workpiece, radiant-energy responsive means positioned in offset adjacent to said flow and producing an electrical signal output proportional to the instantaneously detected radiant-energy level in said flow near the grinding region, and control means responsively connected to said radiant-energy responsive means and operatively connected to said feed means for continuously positioning said grinding wheel with respect to the instantaneously ground workpiece region such that the radiant energy in said flow is maintained at a substantially constant level as evidenced by a substantially constant output signal produced by said radiant-energy responsive means in the course of a cutting traverse, whereby the exposed surface of the workpiece is skinned to an essentially constant predetermined depth of cut.
Claim 2
Dependent Claim
245 words
A grinding machine for skin-grinding the surface of a metal workpiece, comprising: a machine frame and work-supporting means carried thereby, a grinding wheel and frame-referenced feed means for movably positioning said wheel with respect to an exposed surface of a metal workpiece supported by said work-supporting means, driving means for continuously rotating said grinding wheel, traversing means for traversing said wheel and work-supporting means with respect to each other, whereby a flow of grinding matter will emanate in essentially a single direction of discharge away from the instantaneous zone of grinding contact with the workpiece in the course of a cutting traverse, said flow near the grinding region being characterized by radiant energy of magnitude indicative of the instantaneous depth of local grinding cut into the exposed surface of the workpiece, radiant-energy responsive means positioned in offset adjacent to said flow and producing an electrical signal output proportional to the instantaneously detected radiant-energy level in said flow near the grinding region, and control means responsively connected to said radiant-energy responsive means and operatively connected to said feed means for continuously positioning said grinding wheel with respect to the instantaneously ground workpiece region such that the radiant energy in said flow is maintained at a substantially constant level as evidenced by a substantially constant output signal produced by said radiant-energy responsive means in the course of a cutting traverse, whereby the exposed surface of the workpiece is skinned to an essentially constant predetermined depth of cut.
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) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |