Patent US3904944A successfully refreshed from Google Patents.
US3904944A
Expired / Lapsed
US
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Machine tool control
Assignee: Acme Precision Products Inc
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Filing: 1974-01-02
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Granted: 1975-09-09
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Expires: 1994-01-02
Abstract
Abstract A machine tool control comprising a base, a first slide mounted on the base for vertical movement relative to the base, a second slide mounted on said first slide for horizontal movement relative to the first slide, the second slide is adapted to support a plurality of tools. Drive means individual to each slide are provided for moving the slides. A work support is rotatably mounted on the base. The control further comprises a pair of rotary templates or cams supported for rotation about a single axis. A stylus is provided for each cam and follows the contour of its respective cam as the cam is rotated. A rotary electronic resolver is associated with each follower for producing an analog signal in response to movement of the stylus. A rotary electronic resolver is associated with each slide for producing an analog signal corresponding to the position of the slide. Means are provided for converting each analog signal to a digital signal and for comparing the digital signals. When there is predetermined differential between the signals the drive means for the slides are energized to move the slides and, in turn, the tools relative to the work support.
Inventors
- 👤 Warner W Carrick
- 👤 Herbert E Friedman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:41
CPC Classifications
B; B23; B23Q; B23Q15/00; B23Q15/007; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/06; G05B19/066; G05B2219/00; G05B2219/30; G05B2219/35; G05B2219/35554; G05B2219/50; G05B2219/50048; G05B2219/50303; Y; Y10; Y10T; Y10T409/00; Y10T409/30; Y10T409/30084; Y10T409/300896
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
341 words
In a machine tool control, the combination comprising a base, a first slide mounted on said base for movement along a first axis relative to said base, a second slide mounted on said first slide for movement along a second axis transverse to said first slide, said second slide being adapted to support at least one tool, drive means individual to each slide for moving said slide, a work support on said base for supporting a workpiece with its axis parallel to said first axis of said first slide and transverse to said second axis of said second slide, means for causing relative rotation between said work support and said slides about the axis of the workpiece, a pair of rotary cams, one of said rotary cams having a contour for controlling movement of said first slide along said first axis and the other of said rotary cams having a contour for controlling movement of said second slide along said second axis, means for supporting said cams for rotation about a single axis, means for rotating said cams in synchronism, a stylus for each said cam, said stylus following said cam contour as said cam is rotated, a rotary command resolver associated with each said stylus for producing an analog signal in response to movement of said stylus, means for converting mechanical motion of each said stylus as it follows the cam contour of its respective cam into rotary motion of its respective command resolver, a rotary feedback resolver associated with each said slide for producing an analog signal corresponding to the position of said slide along each axis, means for converting the analog signal of each said resolver to a digital signal, means for comparing said digital signals from each said rotary command resolver and its respective feedback resolver for each axis, and means responsive to a predetermined differential between said digital signals for each said axis for actuating said respective drive means of sAid slides to move said slides and, in turn, said tool relative to said work support.
Claim 2
Dependent Claim
341 words
In a machine tool control, the combination comprising a base, a first slide mounted on said base for movement along a first axis relative to said base, a second slide mounted on said first slide for movement along a second axis transverse to said first slide, said second slide being adapted to support at least one tool, drive means individual to each slide for moving said slide, a work support on said base for supporting a workpiece with its axis parallel to said first axis of said first slide and transverse to said second axis of said second slide, means for causing relative rotation between said work support and said slides about the axis of the workpiece, a pair of rotary cams, one of said rotary cams having a contour for controlling movement of said first slide along said first axis and the other of said rotary cams having a contour for controlling movement of said second slide along said second axis, means for supporting said cams for rotation about a single axis, means for rotating said cams in synchronism, a stylus for each said cam, said stylus following said cam contour as said cam is rotated, a rotary command resolver associated with each said stylus for producing an analog signal in response to movement of said stylus, means for converting mechanical motion of each said stylus as it follows the cam contour of its respective cam into rotary motion of its respective command resolver, a rotary feedback resolver associated with each said slide for producing an analog signal corresponding to the position of said slide along each axis, means for converting the analog signal of each said resolver to a digital signal, means for comparing said digital signals from each said rotary command resolver and its respective feedback resolver for each axis, and means responsive to a predetermined differential between said digital signals for each said axis for actuating said respective drive means of sAid slides to move said slides and, in turn, said tool relative to said work support.
Claim 3
Dependent Claim
47 words
The combination set forth in claim 1 including means for electronically introducing an analog signal to said means for converting the analog signal to a digital signal for each command resolver to cause movement of said slides independently of the position of said styluses on said cams.
Claim 4
Dependent Claim
20 words
The combination set forth in claim 2 wherein said last-mentioned means comprises a differential transformer associated with each said slide.
Claim 5
Dependent Claim
23 words
The combination set forth in claim 1 including electronic limit switches associated with said system for energizing predetermined functions associated with said system.
Claim 6
Dependent Claim
85 words
The combination set forth in claim 4 wherein said electronic limit switches comprise a position potentiometer driven by said rotating means for said cams whereby a signal is produced corresponding to the position of said cams, a plurality of potentiometers having potentials corresponding to the position at which functions are to be performed in said system, and means for comparing the signals from said position potentiometer and said plurality of potentiometers to produce a control signal at points in the cycle where said potentials correspond.
Claim 7
Dependent Claim
83 words
The combination set forth in claim 1 wherein said means for converting mechanical motion of each said stylus to rotational movement of its respective command resolver comprises a stylus body, said stylus mounted on said body, means for guiding said body for straight line movement, a rack associated with said body, a pinion engaging said rack, the respective command resolver being associated with said pinion whereby mechanical movement of said guide body produces rotary movement of said pinion and, in turn, said resolver.
Claim 8
Dependent Claim
25 words
The combination set forth in claim 6 including gearing interposed between said pinion and said command resolver for multiplying the rotational movement of said pinion.
Claim 9
Dependent Claim
94 words
In a machine tool control, the combination comprising a pair of rotary templates, means for supporting said templates for rotation about a single axis, means for driving said templates in synchronism, a stylus for each said template, said stylus following said templates as said template is rotated, a rotary command resolver associated with each said stylus for producing an analog signal in response to movement of said stylus, and means for converting mechanical motion of each said stylus as it follows the cam contour of its respective cam into rotary motion of said resolver.
Claim 10
Dependent Claim
94 words
In a machine tool control, the combination comprising a pair of rotary templates, means for supporting said templates for rotation about a single axis, means for driving said templates in synchronism, a stylus for each said template, said stylus following said templates as said template is rotated, a rotary command resolver associated with each said stylus for producing an analog signal in response to movement of said stylus, and means for converting mechanical motion of each said stylus as it follows the cam contour of its respective cam into rotary motion of said resolver.
Claim 11
Dependent Claim
79 words
The combination set forth in claim 8 wherein said means for converting mechanical motion of said stylus to rotational movement of said resolver comprises a stylus body, said stylus mounted on said body, means for guiding said body for straight line movement, a rack associated with said body, a pinion engaging said rack, the respective resolver being associated with said pinion whereby mechanical movement of said guide body produces rotary movement of said pinion and, in turn, said resolver.
Claim 12
Dependent Claim
24 words
The combination set forth in claim 9 including gearing interposed between said pinion and said resolver for multiplying the rotational movement of said pinion.
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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) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |