Reciprocating drive mechanism and press using the same

Details Reciprocating drive mechanism and press using the same Reciprocating drive mechanism and press using the same

2007-10-23

2007-10-23

Banks, Derris H. (Department: 3725)

Metal deforming

With means to drive tool

With means to selectably control movement of tool

C072S454000, C072S389300, C100S289000

Reexamination Certificate

active

10514181

ABSTRACT:
A reciprocating drive mechanism for converting motor rotation into linear motions to produce a reciprocating drive force, and a press machine using the mechanism. The rotation of a first motor (20A) out of two motors (20A) and (20B) is converted into a high-speed low-torque rotational output and transmitted to a ball screw mechanism (50) by a first power transmission mechanism (30). The rotation of the second motor (20B) is converted into a low-speed high-torque rotational output and transmitted to the ball screw mechanism (50) by a second power transmission mechanism (40). The ball screw mechanism (50) is made of a feed screw (52) supported in a screw hole of a nut member (51) so as to be capable of screw-fed rotation. The feed screw (52) and the nut member (51) are coupled with the first power transmission mechanism (30) and the second power transmission mechanism (40), respectively. A corotation prevention mechanism (80) prevents the feed screw (52) from rotating together with the rotation of the nut member (51).

REFERENCES:
patent: 5488880 (1996-02-01), Sartorio
patent: 53-132009 (1978-11-01), None
patent: 2-108539 (1990-08-01), None
patent: 6-54483 (1994-07-01), None
patent: 3344721 (2002-08-01), None
patent: 2003-200220 (2003-07-01), None
patent: WO 92/12362 (1992-07-01), None

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