Patent US4098105A successfully refreshed from Google Patents.
US4098105A
Expired / Lapsed
US
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Method and apparatus for setting the value of the forging dimension in forging presses using V-dies as forging tools
Assignee: SMS Siemag AG
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Filing: 1976-08-16
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Granted: 1978-07-04
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Expires: 1996-08-16
Abstract
Abstract To set the operation of a forging press having V-dies, so as to produce a desired workpiece dimension after forging, the dimensions of the V-dies and the desired workpiece dimensions are fed into a control circuit. A computer in the control circuit calculates a correction value to be added to the workpiece dimension to obtain a set value for the forging stroke. This set value is passed to valves controlling the operation of the press, and a forging stroke is carried out. The length of the forging stroke is measured, the measured value is compared with the set value in a comparator, and the next forging stroke is initiated when the set and measured values coincide.
Inventors
- 👤 Detlef Fullers
- 👤 Eduard Schmitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:31
CPC Classifications
B; B21; B21J; B21J9/00; B21J9/10; B21J9/20; B21J7/00; B21J7/20; B21J7/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A method for setting the operation of a forging press having V-dies, so as to produce a desired workpiece dimension after forging, comprising the steps of: feeding the width across flats of the V-dies when the dies meet and the desired workpiece dimension into a control circuit; calculating with a computer in the circuit a correction value to be added to the workpiece dimension to obtain a set value for the forging stroke; passing the set value for the forging stroke to valves controlling the operation of the press, and performing a forging stroke; measuring the length of the forging stroke; comparing the measured value with the set value in a comparator; and initiating the next forging stroke when the set and measured values coincide.
Claim 2
Independent Claim
125 words
A method for setting the operation of a forging press having V-dies, so as to produce a desired workpiece dimension after forging, comprising the steps of: feeding the width across flats of the V-dies when the dies meet and the desired workpiece dimension into a control circuit; calculating with a computer in the circuit a correction value to be added to the workpiece dimension to obtain a set value for the forging stroke; passing the set value for the forging stroke to valves controlling the operation of the press, and performing a forging stroke; measuring the length of the forging stroke; comparing the measured value with the set value in a comparator; and initiating the next forging stroke when the set and measured values coincide.
References Cited (Backward Citations)
US3196647A
Cited
GB1190791A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-03 | 1982-01-02 | 1982-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-03 | 1986-01-02 | 1986-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-03 | 1990-01-02 | 1990-07-04 | $7700.00 | Window Closed / Lapsed |