Patent US4749289A successfully refreshed from Google Patents.
Patent US4394608A successfully refreshed from Google Patents.
US4394608A
Expired / Lapsed
US
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Machine tool tracing system
Assignee: Schneider Electric USA Inc
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Filing: 1980-11-20
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Granted: 1983-07-19
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Expires: 2000-11-20
Abstract
Abstract A velocity control for a machine tool tracing system reduces the operating speed of the system in response to a rapid change of phase angle in the tracing stylus deflection produced, for example, when tracing the contour of a sharp angle or inside corner of a template.
Inventors
- 👤 Robert E. Tryber
- 👤 George A. Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:35
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/121; B23Q35/123
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
A control system wherein a stylus traces a contour around a template, and wherein the template moves relative to the stylus in response to deflection of the stylus by moving contact with the template, comprising means for detecting a rate of change of the deflection angle of the stylus from said template, and means for producing a signal for controlling the magnitude of the velocity of said template relative to said stylus in response to the rate of change of deflection angle.
Claim 2
Dependent Claim
82 words
A control system wherein a stylus traces a contour around a template, and wherein the template moves relative to the stylus in response to deflection of the stylus by moving contact with the template, comprising means for detecting a rate of change of the deflection angle of the stylus from said template, and means for producing a signal for controlling the magnitude of the velocity of said template relative to said stylus in response to the rate of change of deflection angle.
Claim 3
Dependent Claim
70 words
For use in a machine tool tracing system wherein means are provided for moving a stylus around a template at an operating speed in response to deflection of the stylus from the template, a speed control circuit, comprising means for producing a signal indicative of a rate of change of deflection angle of the stylus from said template, and means for altering said operating speed in response to said signal.
Claim 4
Dependent Claim
70 words
For use in a machine tool tracing system wherein means are provided for moving a stylus around a template at an operating speed in response to deflection of the stylus from the template, a speed control circuit, comprising means for producing a signal indicative of a rate of change of deflection angle of the stylus from said template, and means for altering said operating speed in response to said signal.
Claim 5
Dependent Claim
45 words
A speed control circuit according to claim 2, further comprising means for producing a signal indicative of the magnitude of the stylus deflection in the working plane, and means for altering the operating speed of the moving means in response to the deflection magnitude signal.
Claim 6
Dependent Claim
71 words
A speed control circuit according to claim 2, further comprising means for producing a signal indicative of the magnitude of the total stylus deflection, means for producing a signal corresponding to a desired magnitude of deflection of the stylus relative to the template, and means for altering the operating speed of the moving means in response to a difference between the total deflection magnitude signal and the desired deflection magnitude signal.
Claim 7
Dependent Claim
97 words
A machine tool tracing system wherein a stylus traces a contour around a template in a working plane, comprising means for moving the stylus relative to the template at an operating speed in the working plane, means for producing a deflection signal having a phase angle indicative of the direction of stylus deflection in the working plane, means for deriving a speed control signal in response to the rate of change of the phase angle of said deflection signal, and means for altering the operating speed of the moving means in response to said speed control signal.
Claim 8
Dependent Claim
97 words
A machine tool tracing system wherein a stylus traces a contour around a template in a working plane, comprising means for moving the stylus relative to the template at an operating speed in the working plane, means for producing a deflection signal having a phase angle indicative of the direction of stylus deflection in the working plane, means for deriving a speed control signal in response to the rate of change of the phase angle of said deflection signal, and means for altering the operating speed of the moving means in response to said speed control signal.
Claim 9
Dependent Claim
43 words
The tracing system of claim 5, further comprising means for producing a signal indicative of the magnitude of the stylus deflection in the working plane, and means for altering the operating speed of the moving means in response to the deflection magnitude signal.
Claim 10
Dependent Claim
69 words
The tracing system of claim 4 further comprising means for producing a signal indicative of the magnitude of the total stylus deflection, means for producing a signal corresponding to a desired magnitude of deflection of the stylus relative to the template, and means for altering the operating speed of the moving means in response to a difference between the total deflection magnitude signal and the desired deflection magnitude signal.
Claim 11
Dependent Claim
68 words
A process for automatically tracing a contour around a template with a stylus, comprising moving the template at an operating speed relative to the stylus in response to deflection of the stylus from the template, producing a signal indicative of a rate of change of deflection angle of the stylus from said template, and altering said operating speed in response to the rate of change of deflection angle.
Claim 12
Dependent Claim
68 words
A process for automatically tracing a contour around a template with a stylus, comprising moving the template at an operating speed relative to the stylus in response to deflection of the stylus from the template, producing a signal indicative of a rate of change of deflection angle of the stylus from said template, and altering said operating speed in response to the rate of change of deflection angle.
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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) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |