US3700993A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for controlling relative motion between gage jaws on a contacting gage
Assignee: Milacron Inc
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Filing: 1971-05-27
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Granted: 1972-10-24
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Expires: 1991-05-27
Abstract
Abstract An apparatus for controlling the relative motion and final position between gage jaws on a contacting type of gage. A driving mechanism is coupled to one of the gage jaws to provide relative motion between said jaws. A command circuit supplies command signals to the driving mechanism. Each time the driving mechanism is commanded to move, a feed back circuit measures the actual motion of the gage jaw and produces a control signal in response to a predetermined magnitude of said motion. The control signal is used to gate a subsequent command signal to the driving mechanism. Consequently, the gage jaw can be brought in contact with a workpiece and held in position thereon without the danger of damage to the workpiece.
Inventors
- 👤 Thomas R Fischer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:30
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/001; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/40; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37345
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
244 words
An apparatus for controlling relative motion between gage jaws in a gaging device, one of said gage jaws being coupled to a driving mechanism for moving it relative to the other gage jaw in response to command pulses representing predetermined commanded increments of motion, the apparatus comprising: a. a feedback element connected to the gage jaws and being responsive to a first command pulse for producing two periodic pulse trains shifted in phase 90* with respect to each other, said pulse trains having a period representing a predetermined magnitude of motion being a predetermined fraction of the commanded increment of motion; b. a direction decoder connected to the feedback elemEnt for detecting the direction of the relative motion between the gage jaws; c. a reversible counter responsive to the first command pulse and connected to the feedback element and the direction decoder for measuring the magnitude of the relative motion between the gage jaws; d. a count decoder connected to the counter for producing a control signal in response to a predetermined magnitude of motion measured by the counter in a predetermined direction; and e. a gating network responsive to the control signal and the command pulses and having an output connected to the driving mechanism for producing a second command pulse to the driving mechanism in response to the control signal and inhibiting the production of the second command pulse to the driving mechanism in response to an absence of the control signals.
Claim 2
Independent Claim
244 words
An apparatus for controlling relative motion between gage jaws in a gaging device, one of said gage jaws being coupled to a driving mechanism for moving it relative to the other gage jaw in response to command pulses representing predetermined commanded increments of motion, the apparatus comprising: a. a feedback element connected to the gage jaws and being responsive to a first command pulse for producing two periodic pulse trains shifted in phase 90* with respect to each other, said pulse trains having a period representing a predetermined magnitude of motion being a predetermined fraction of the commanded increment of motion; b. a direction decoder connected to the feedback elemEnt for detecting the direction of the relative motion between the gage jaws; c. a reversible counter responsive to the first command pulse and connected to the feedback element and the direction decoder for measuring the magnitude of the relative motion between the gage jaws; d. a count decoder connected to the counter for producing a control signal in response to a predetermined magnitude of motion measured by the counter in a predetermined direction; and e. a gating network responsive to the control signal and the command pulses and having an output connected to the driving mechanism for producing a second command pulse to the driving mechanism in response to the control signal and inhibiting the production of the second command pulse to the driving mechanism in response to an absence of the control signals.
Claim 3
Dependent Claim
30 words
The apparatus of claim 1 wherein a time delay is connected between the count decoder and the gating network for maintaining the control signal for a predetermined period of time.
Claim 4
Independent Claim
144 words
An apparatus for use with a gaging device for controlling motion of a first gage jaw relative to a second gage jaw, said motion being generated by a driving mechanism coupled to the gaging device and operating in response to a first command signal representing a predetermined increment of motion, the apparatus comprising: a. means responsive to the relative motion between the gage jaws for producing two feedback signals, each feedback signal representing a predetermined fraction of the increment of motion; b. means responsive to the feedback signals for producing a control signal in response to a predetermined number of one of said feedback signals occurring during a relative motion in a predetermined direction; and c. means responsive to the control signal and having an output connected to the driving mechanism for controlling the application of a second command signal to the driving mechanism.
Claim 5
Independent Claim
144 words
An apparatus for use with a gaging device for controlling motion of a first gage jaw relative to a second gage jaw, said motion being generated by a driving mechanism coupled to the gaging device and operating in response to a first command signal representing a predetermined increment of motion, the apparatus comprising: a. means responsive to the relative motion between the gage jaws for producing two feedback signals, each feedback signal representing a predetermined fraction of the increment of motion; b. means responsive to the feedback signals for producing a control signal in response to a predetermined number of one of said feedback signals occurring during a relative motion in a predetermined direction; and c. means responsive to the control signal and having an output connected to the driving mechanism for controlling the application of a second command signal to the driving mechanism.
Claim 6
Independent Claim
219 words
An apparatus for controlling relative motion between first and second gage jaws of a gaging device, said relative motion being generated by a driving mechanism connected to the gaging device and operating in response to command pulses, each command pulse representing a predetermined increment of motion, the apparatus comprising: a. means responsive to a relative motion between the gage jaws produced by a first command pulse for producing periodic feedback signals, each feedback signal having a period representing a fraction of the predetermined increment of motion, and one of said feedback signals being displaced in time by one quarter of a period with respect to the other feedback signal; b. means responsive to the feedback signals for detecting the direction of motion of the first gaged jaw with respect to the second gage jaw; c. means connected to the detecting means and responsive to one of the feedback signals and the first command pulse for producing a control signal in response to a predetermined number of the one of the feedback signals occurring during a relative motion in a predetermined direction; and d. means responsive to the control signal and a second command pulse and having an output connected to the driving mechanism for supplying said second command pulse to the driving mechanism in response to the control signal.
Claim 7
Independent Claim
219 words
An apparatus for controlling relative motion between first and second gage jaws of a gaging device, said relative motion being generated by a driving mechanism connected to the gaging device and operating in response to command pulses, each command pulse representing a predetermined increment of motion, the apparatus comprising: a. means responsive to a relative motion between the gage jaws produced by a first command pulse for producing periodic feedback signals, each feedback signal having a period representing a fraction of the predetermined increment of motion, and one of said feedback signals being displaced in time by one quarter of a period with respect to the other feedback signal; b. means responsive to the feedback signals for detecting the direction of motion of the first gaged jaw with respect to the second gage jaw; c. means connected to the detecting means and responsive to one of the feedback signals and the first command pulse for producing a control signal in response to a predetermined number of the one of the feedback signals occurring during a relative motion in a predetermined direction; and d. means responsive to the control signal and a second command pulse and having an output connected to the driving mechanism for supplying said second command pulse to the driving mechanism in response to the control signal.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |