Machine tool control systems
Abstract
Abstract A CONTROL SYSTEM FOR A MACHINE TOOL COMPRISING A MOTOR BY WHICH THE TOOL CAN BE MOVED RADIALLY TOWARDS AND AWAY FROM THE AXIS OF ROTATION OF A WORKPIECE AT SUCH A SPEED THAT IN USE THE TOOL CAN MAINTAIN THE CIRCULARITY OF THE WORKPIECE EVEN IF THE WORKPIECE IS SOMEWHAT ECCENTRIC FROM THE AXIS OF ROTATION, THE SYSTEM INCLUDING FIRST AND SECOND MEASURING GAUGES AND CONTROL MEANS FOR THE MOTOR ARRANGED TO COMBINE THE OUTPUTS OF THE FIRST AND SECOND GAUGES AND TO CONTROL THE MOTOR AND SO THE RADIAL POSITION OF THE TOOL IN SUCH A MANNER THAT THE DIAMETRICAL DISTANCE BETWEEN THE PART OF THE WORKPIECE OPPOSITE THE SECOND GAUGE AND THE PART OF THE WORKPIECE ACTED ON BY THE TOOL REMAINS SUBSTANTIALLY CONSTANT.
Inventors
- 👤 Royds Sharp
- 👤 Malcolm Bath
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1974-02-08 | 1974-08-10 | 1975-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-08 | 1978-08-10 | 1979-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-08 | 1982-08-10 | 1983-02-09 | $7700.00 | Window Closed / Lapsed |