Method of operating press machine and servo controller therefor

Details Method of operating press machine and servo controller therefor Method of operating press machine and servo controller therefor

1990-06-25

1991-12-03

Jones, David

Metal deforming

With means to drive tool

With means to selectably control movement of tool

72 7, B21J 746

Patent

active

050690604

ABSTRACT:
In a method of operating a press machine having a servomotor (20) and a servo controller therefor, the tool stay substantially still immediately after the completion of working a workpiece for a period of from 0.05 to 2 seconds and also the speed of the tool applying an impact to the workpiece for working is decelerated immediately before the tool strikes against the workpiece in order to reduce the noise generated when the impact is applied. The speed and positional locus of the ram (36) are set for each step using respective setting switches provided on a panel. The servomotor (20) is program-controlled according to the data input through the respective setting switches.

REFERENCES:
patent: 3827328 (1974-08-01), LaFlamme et al.
"Select-a-Speed", Dreis and Krump Manufacturing Co. Oct. 29, 1964, p. 104.

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