US3715646A
Expired / Lapsed
US
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Tracing feed rate steering control
Assignee: Milacron Inc
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Filing: 1971-07-21
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Granted: 1973-02-06
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Expires: 1991-07-21
Abstract
Abstract An improved electronic tracing control for automatically steering the direction of the command feedrate vector to maintain a substantially zero quadrature error.
Inventors
- 👤 R Wise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:24
CPC Classifications
B; B23; B23Q; B23Q35/00; B23Q35/04; B23Q35/08; B23Q35/12; B23Q35/121
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
88 words
An electronic tracing control comprised in part of apparatus for producing a quadrature error signal and a feed rate command signal, wherein the improvement comprises: a. means responsive to the quadrature error signal for producing a control signal as function of the time average value of the quadrature error signal; and b. means responsive to the control signal and the feed rate command signal for steering the feedrate command signal as a function of the control signal to maintain the quadrature error signal at a substantially zero value.
Claim 2
Dependent Claim
88 words
An electronic tracing control comprised in part of apparatus for producing a quadrature error signal and a feed rate command signal, wherein the improvement comprises: a. means responsive to the quadrature error signal for producing a control signal as function of the time average value of the quadrature error signal; and b. means responsive to the control signal and the feed rate command signal for steering the feedrate command signal as a function of the control signal to maintain the quadrature error signal at a substantially zero value.
Claim 3
Dependent Claim
88 words
An electronic tracing control comprised in part of apparatus for producing a quadrature error signal and a feed rate command signal, wherein the improvement comprises: a. means responsive to the quadrature error signal for producing a control signal as function of the time average value of the quadrature error signal; and b. means responsive to the control signal and the feed rate command signal for steering the feedrate command signal as a function of the control signal to maintain the quadrature error signal at a substantially zero value.
Claim 4
Dependent Claim
88 words
An electronic tracing control comprised in part of apparatus for producing a quadrature error signal and a feed rate command signal, wherein the improvement comprises: a. means responsive to the quadrature error signal for producing a control signal as function of the time average value of the quadrature error signal; and b. means responsive to the control signal and the feed rate command signal for steering the feedrate command signal as a function of the control signal to maintain the quadrature error signal at a substantially zero value.
Claim 5
Dependent Claim
130 words
An electronic tracing control comprised in part of apparatus for producing an error signal representing an erroneous deflection in a direction perpendicular to a model surface at a tracing point and a command signal representing a predetermined tracing velocity oriented at a small angle to a tangent to the model surface at the tracing point, wherein the improvement comprises: a. means responsive to the error signal for producing a control signal as a function of the time average value of the error signal; and b. means responsive to the control signal and the command signal for producing a corrected command signal representing a velocity in a direction coincident with the tangent to the model surface at the tracing point, whereby said error signal is maintained at a substantially zero value.
Claim 6
Dependent Claim
130 words
An electronic tracing control comprised in part of apparatus for producing an error signal representing an erroneous deflection in a direction perpendicular to a model surface at a tracing point and a command signal representing a predetermined tracing velocity oriented at a small angle to a tangent to the model surface at the tracing point, wherein the improvement comprises: a. means responsive to the error signal for producing a control signal as a function of the time average value of the error signal; and b. means responsive to the control signal and the command signal for producing a corrected command signal representing a velocity in a direction coincident with the tangent to the model surface at the tracing point, whereby said error signal is maintained at a substantially zero value.
Claim 7
Dependent Claim
142 words
An electronic tracing control comprised in part of apparatus for producing an error signal representing erroneous deflections in a direction perpendicular to a model surface at a tracing point and a command signal representing a predetermined tracing velocity oriented at a small angle to a tangent to the model surface at the tracing point, wherein the improvement comprises: a. means responsive to the error signal for integrating the error signal to produce a control signal; b. means responsive to the control signal for producing a steering signal modulated as a function of the control signal and 90* out of phase with the command signal; and c. means for receiving and summing the steering signal and the command signal to produce a corrected command signal defining a velocity in a direction coincident with the tangent to the model surface at the tracing point.
Claim 8
Dependent Claim
142 words
An electronic tracing control comprised in part of apparatus for producing an error signal representing erroneous deflections in a direction perpendicular to a model surface at a tracing point and a command signal representing a predetermined tracing velocity oriented at a small angle to a tangent to the model surface at the tracing point, wherein the improvement comprises: a. means responsive to the error signal for integrating the error signal to produce a control signal; b. means responsive to the control signal for producing a steering signal modulated as a function of the control signal and 90* out of phase with the command signal; and c. means for receiving and summing the steering signal and the command signal to produce a corrected command signal defining a velocity in a direction coincident with the tangent to the model surface at the tracing point.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |