Aida Engineering, Ltd.

Yuichi Nakamura

Masayoshi Sugawara

Akira Matsui

Masakatsu Shiga

A frame for a press, including a bed having four corners, upstanding members formed integrally with the bed at its four corners, and bow resisting elements disposed between the bed and the upstanding members so as to resist bowing of the upstanding members under a vertical load on the bed. In one embodiment the bow resisting elements include rib members connected to the bed and extending inside the upstanding members. In another embodiment the bow resisting elements include wedge members wedged between a bolster on the bed and the upstanding members.

Deformation resistant frame for a press

A drive device for a press wherein a drive device assembly provided with a quick-return mechanism capable of changing its speed characteristic in different degrees is built in a unitary case, each unit case being freely attachable and detachable at the crown center of the press, an output shaft of the drive device has its end portions projecting outwardly from both sides of the unit case and is coupled with a main crankshaft at its end portions through couplings, a main gear located in the unit case is divided into two parts to form a hollow section therebetween, and a link drive an balance weight for the linkage are built in the hollow section.

Drive device for press

A balancing device for a press slide arranged in a vacant space of the press frame has an eccentric ring portion 180.degree. out of phase with an eccentric portion of the crank shaft attached to an end of the crank shaft and, a balancing weight slidable on guide posts and reciprocated vertically through a slide-block mounted in the eccentric ring.

Growing community of inventors

Sagamihara, Japan

Yuichi Nakamura