Fault detection system for continuously running transfer press

Details Fault detection system for continuously running transfer press Fault detection system for continuously running transfer press

1984-07-25

1986-12-09

Crane, Daniel C.

Metal deforming

With randomly-actuated stopping

Responsive to condition of work or product

72405, 72421, 72 1, 100 53, 192129A, B21D 5500

Patent

active

046272534

ABSTRACT:
A continuously running mechanical transfer press includes a workpiece transfer system in which electric motors are used to provide reciprocating movements in the clamp, lift and transfer axes. An independent backup tracking system including a fault detection sensing control is provided which utilizes independent measures of the position of the workpiece transfer system in all three axes along with an independent measure of the position of the press die in its cycle to monitor proper synchronization and operation of the workpiece transfer system. The fault detection system indicates a fault in the event the transfer system loses synchronization with the moving die, in the event two separate measures of die position are not in agreement, or in the event the transfer system fails to maintain parallelism of the two transfer rails included in the system. The press is stopped in response to detection of a fault to protect the press and the transfer system from damage.

REFERENCES:
patent: 3435650 (1969-04-01), Forster et al.
patent: 3441349 (1969-06-01), Lippke
patent: 3831425 (1974-08-01), Kita
patent: 3862564 (1975-01-01), Blase
patent: 4387632 (1983-06-01), Heiberger

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