Presses – Automatic or material triggered control – Of actuating means
Patent
1998-01-20
1998-11-10
Gerrity, Stephen F.
Presses
Automatic or material triggered control
Of actuating means
74665B, 83548, 100 98R, 100273, 100282, 100287, 100292, B30B 1514
Patent
active
058328165
ABSTRACT:
A ram driving device for a press machine having: a ram; a horizontal drive axle (33) rotatably provided horizontally in a frame (3) of the press machine; a motion converting mechanism (35, 63, 83) associated with the horizontal drive axle, for converting a rotational motion of the horizontal drive axle into up-and-down motion of the ram (29); and a plurality of servomotors (43, 47) linked with the horizontal drive axle, for rotating the horizontal drive axle in synchronism with each other, to drive the ram up and down. The motion converting mechanism is a connecting rod (35); and a link mechanism (63) driven by a ball screw (61) and a nut member (77); and an eccentric ring cam (33) and a cam follower (91). Since the ram can be driven by a plurality of the servomotors synchronously, the device can generate a large press power of various moving stroke and various moving speed freely, without increasing the maintenance cost thereof.
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Hirose Shunzo
Seto Yoshiharu
Amada MFG America Inc.
Gerrity Stephen F.
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