Transfer device in a metal-forming machine

Details Transfer device in a metal-forming machine Transfer device in a metal-forming machine

1995-05-17

1997-04-08

Crane, Daniel C.

Metal deforming

By plural tool-couples

With means to feed work between plural tool stations

7240513, B21D 4305

Patent

active

056177569

ABSTRACT:
In the case of transfer presses and similar metal-forming machines, transfer devices must be provided for the transport of the sheet metal parts through the metal-forming stages. The lifting and lowering movement should be freely programmable, yet, a drive for the lifting and lowering movement is to be permitted which is free from play. This is achieved by the use of servo motors or similar motors with a hollow-shaft rotor and high-resolution position generators for the direct application on the transfer device, in which case the hollow-shaft rotor of each of the servo motors is provided with a spindle nut which, interacts with a spindle which is fastened on the transfer device in a non-rotatable manner.

REFERENCES:
patent: 4024749 (1977-05-01), Taniguchi et al.
patent: 4653311 (1987-03-01), Tack
patent: 4873860 (1989-10-01), Werner
patent: 5001921 (1991-03-01), Schneider et al.
patent: 5218855 (1993-06-01), Werner
patent: 5488852 (1996-02-01), Nishikawa

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