Method for checking the driving and control system of hydraulic

Details Method for checking the driving and control system of hydraulic Method for checking the driving and control system of hydraulic

1992-10-22

1994-04-19

Hornsby, Harvey C.

Presses

Methods

100 43, 100 48, 100 99, 100269R, 92 5R, 91361, B30B 1300, B30B 1518

Patent

active

053036417

ABSTRACT:
A method for checking the driving and control system of a hydraulic punch press is provided which comprises the steps of delivering a stop order signal to the driving device, sensing the position of the sliding punch member along its stroke and comparing the time or the distance required by the punch member to come practically to a stop, with preset reference values, and producing a fault signal when the time or distance exceeds the preset reference values.

REFERENCES:
patent: 3161044 (1964-12-01), Harrison et al.
patent: 3802318 (1974-04-01), Sibbald
patent: 3986437 (1976-10-01), Lioux
patent: 4048886 (1977-09-01), Zettler
patent: 4148203 (1979-04-01), Farazandeh et al.
patent: 4161649 (1979-07-01), Klos et al.
patent: 4205603 (1980-06-01), Baker, Jr.
patent: 4210228 (1980-07-01), Vaarala
patent: 4408471 (1983-10-01), Gossard et al.
patent: 4429627 (1984-02-01), Edso 100 43

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