US3754178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for adjusting the tools of a multi-spindle tool machine
Assignee: Heyligenstaedt and Co Werkzeugmaschinenfabrik GmbH
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Filing: 1971-07-02
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Granted: 1973-08-21
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Expires: 1991-07-02
Abstract
Abstract Means compensating for tool wear in a multi-spindle machine tool. A cross slide, as for a lathe, is provided carrying one tool, such as a single point tool. A carrier is moveably supported on the cross slide for carrying a second tool, such as a single point tool. A first feeler responds to the position of the cross slide and suitable switching and driving means adjust the cross slide to a proper displacement from a given zero position of the numerical control apparatus to compensate as desired in such position for tool wear. A second feeler responds to the location of said carrier on said cross slide and through further switching, summing and comparing apparatus automatically moves said second tool on the cross slide to compensate as required for tool wear and automatically maintains a constant spacing between the working edges of said tools.
Inventors
- 👤 E Dormehl
- 👤 H Maas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:38
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/33; G05B2219/00; G05B2219/30; G05B2219/50; G05B2219/50015; G05B2219/50019; G05B2219/50295; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2502; Y10T82/2524
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
331 words
An apparatus for compensating for tool wear in a multispindle machine, comprising: a movable cross bar and first drive means therefor; a first tool carrier fixedly mounted on said cross bar; a second tool carrier including means for mounting said second tool carrier on said cross bar for longitudinal movement therealong and second drive means therefor; first indicating means for indicating the position of said cross bar and producing a first signal in response thereto; second indicating means for indicating the position of said second tool carrier on said cross bar and producing a second signal in response thereto; first adjustable signal generating means for producing a first desired value signal indicative of the desired position of said cross bar; second adjustable signal generating means for producing a second desired value signal indicative of the desired position of said second tool carrier along said cross bar; first comparator means for comparing said first desired value signal with said first signal produced by said first indicating means and producing a first control signal indicative of the sum thereof for controlling said first drive means until the sum of said first desired value signal and said first signal are nulled; summing means for summing said first and second desired value signals and producing a third desired value signal; and second comparator means for comparing said thrid desired value signal with said second signal produced by said second indicating means and producing a second control signal indicative of the sum thereof for controlling said second drive means until the sum of said third desired value signal and said second signal are nulled; whereby a change of at least one of said first and second adjustable signal generating means will effect an alteration in the sum produced by at least one of said first and second comparator means to alter the desired position of at least one of said cross bar and thence said first tool carrier fixedly mounted thereon and said second tool carrier.
Claim 2
Independent Claim
331 words
An apparatus for compensating for tool wear in a multispindle machine, comprising: a movable cross bar and first drive means therefor; a first tool carrier fixedly mounted on said cross bar; a second tool carrier including means for mounting said second tool carrier on said cross bar for longitudinal movement therealong and second drive means therefor; first indicating means for indicating the position of said cross bar and producing a first signal in response thereto; second indicating means for indicating the position of said second tool carrier on said cross bar and producing a second signal in response thereto; first adjustable signal generating means for producing a first desired value signal indicative of the desired position of said cross bar; second adjustable signal generating means for producing a second desired value signal indicative of the desired position of said second tool carrier along said cross bar; first comparator means for comparing said first desired value signal with said first signal produced by said first indicating means and producing a first control signal indicative of the sum thereof for controlling said first drive means until the sum of said first desired value signal and said first signal are nulled; summing means for summing said first and second desired value signals and producing a third desired value signal; and second comparator means for comparing said thrid desired value signal with said second signal produced by said second indicating means and producing a second control signal indicative of the sum thereof for controlling said second drive means until the sum of said third desired value signal and said second signal are nulled; whereby a change of at least one of said first and second adjustable signal generating means will effect an alteration in the sum produced by at least one of said first and second comparator means to alter the desired position of at least one of said cross bar and thence said first tool carrier fixedly mounted thereon and said second tool carrier.
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |