Press control method and press apparatus

Details Press control method and press apparatus Press control method and press apparatus

1995-12-27

1996-12-24

Ro, Bentsu

Electricity: motive power systems

Control by patterns or other predetermined schedule means

Motor running-speed control

318162, 318569, 318626, 318430, 72 201, B21D 502

Patent

active

055876331

ABSTRACT:
It is an object to obtain a press apparatus and a press controlling method which apply press working to a processed object with accurate press load and is capable of press working with accurate press load without affected by variations in thickness of the processed objects and variations in shut height of molds. A servo motor (51) is connected concentrically to a rotation transmitter (52), and a screw shaft (53) is provided passing through the center of the rotation transmitter (52). The driving force of the servo motor (51) is converted into a thrusting force of a press ram (54) by combining the rotation transmitter (52) and the screw shaft (53). Correct press load is applied to the processed objects and troubles in the press processing caused by variations in thickness of the processed objects can be prevented.

REFERENCES:
patent: 3596266 (1971-07-01), Slawson et al.
patent: 3825811 (1974-07-01), Smith et al.
patent: 3987283 (1976-10-01), Moeller
patent: 4314185 (1982-02-01), Schneider et al.
patent: 5115735 (1992-05-01), Gloe et al.

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