Press having a programmable ram with sensing means

Details Press having a programmable ram with sensing means Press having a programmable ram with sensing means

1986-03-31

1987-06-30

Kazenske, E. R.

Elongated-member-driving apparatus

With interlock means

227 4, B21J 1528

Patent

active

046764216

ABSTRACT:
A point of operation safety device for hydraulic or pneumatic presses. The safety device is computer controlled and limits the movement of the punch by employing two sensing devices. These sensing devices include both position and contact sensors which are used as dual input variables to satisfy computer monitored operational condition limits which, if not met, shut down the operation of the machine to prevent accident or injury to the operator. Both sensing devices are located within the housing of the press and the ram assembly so that no additional structures are required which might obstruct the working area and thereby hinder the efficient use of the press. Because the components of this safety device are located within the body of the machinery and include complicated electronic control circuitry, it is impossible to defeat the safety mechanism by disconnecting any of the components.

REFERENCES:
patent: 4208895 (1980-06-01), Grigorenko et al.
patent: 4291359 (1981-10-01), Dieterle
patent: 4391358 (1983-07-01), Haeger
patent: 4488237 (1984-12-01), Aronson et al.
patent: 4489578 (1984-12-01), Nagai et al.

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