US4433275A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-dimensional tracer control system
Assignee: Fanuc Corp
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Filing: 1981-06-02
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Granted: 1984-02-21
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Expires: 2001-06-02
Abstract
Abstract A three-dimensional tracer control system which is provided with an integration circuit for integrating the difference between a Z-axis direction displacement signal and a reference displacement signal and an adder for adding together the above-mentioned difference and the output from the integration circuit. The trace velocity in the Z-axis direction is controlled by the output from the adder, by which it is possible to perform tracing, with the Z-axis direction displacement signal and the reference displacement signal held nearly equal to each other; consequently, machining accuracy is increased.
Inventors
- 👤 Ryoji Imazeki
- 👤 Etsuo Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:36
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/121; B23Q35/123
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
124 words
A three-dimensional tracer control system which traces the configuration of a model based on direction displacement signals from a tracer head, said system comprising: said tracer head providing X- , Y- and Z-axis direction displacement signals as said direction displacement signals; X-Y means for controlling the tracing of said tracer head in the X-Y plane according to said X- and Y-axis direction displacement signals and a desired value of a function thereof; an integration circuit for integrating the difference between said Z-axis direction displacement signal and a desired value thereof; an adder for adding together said difference and the output from said integration circuit; and means for controlling the trace velocity in the Z-axis direction in accordance with the output signal from said adder.
Claim 2
Dependent Claim
124 words
A three-dimensional tracer control system which traces the configuration of a model based on direction displacement signals from a tracer head, said system comprising: said tracer head providing X- , Y- and Z-axis direction displacement signals as said direction displacement signals; X-Y means for controlling the tracing of said tracer head in the X-Y plane according to said X- and Y-axis direction displacement signals and a desired value of a function thereof; an integration circuit for integrating the difference between said Z-axis direction displacement signal and a desired value thereof; an adder for adding together said difference and the output from said integration circuit; and means for controlling the trace velocity in the Z-axis direction in accordance with the output signal from said adder.
Claim 3
Dependent Claim
44 words
The system of claim 1, said X-Y means controlling the tracing of said tracer head in the X-Y plane according to the positive square root of the sum of the squares of said X- and Y-axis direction displacement signals and a desired value therefor.
References Cited (Backward Citations)
US2922052A
Cited
US4104684A
Cited
US4129814A
Cited
US4117324A
Cited
US4224670A
Cited
US4296473A
Cited
US4370722A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |