Metal deforming – By plural tool-couples – With means to feed work between plural tool stations
Patent
1988-09-02
1990-01-30
Crane, Daniel C.
Metal deforming
By plural tool-couples
With means to feed work between plural tool stations
72421, 198621, B21J 1308
Patent
active
048965235
ABSTRACT:
A multi-station press, having a press frame, a press bed and a ram tooled for performing sequential work operations at plural stations and a transfer mechanism for transporting work pieces from one station to the next, has positively driven finger operating mechanism. The transfer mechanism includes transfer rails and fingers extending inwardly toward the work station. The finger operating mechanism includes an actuating rod mounted for sliding movement on each transfer rail, a finger pull-back lever pivoted to the transfer rail and engaging the finger, with the actuating rod including an upstanding tooth for engaging the finger pull-back lever. In one embodiment two teeth are provided for rotating the lever to both open and close the fingers. An actuating lever pivotally mounted to the transfer rails operates the actuating rods. The actuating lever includes a depending follower received in a roll slot member mounted for lateral sliding movement on the press frame, the roll slot accommodating the longitudinal reciprocating motion of the transfer rail and actuating lever mounted thereto. A cam lever is pivotally mounted to the press frame and has a first end engaged with the roll slot member. The other end of the cam lever is driven by a press cam shaft. The cam assembly includes first and second cams mounted to a hub assembly which permits adjustment of the cam relative to each other. Each cam further comprises an adjustment segment for extending the profile, as desired. The cam lever includes two cam followers, one engaged with each cam, providing a positive drive for the cam lever and the entire finger operating mechanism.
REFERENCES:
patent: 2934194 (1960-04-01), Adams
patent: 4404837 (1983-09-01), Allen et al.
patent: 4735303 (1988-04-01), Wallis
patent: 4750348 (1988-06-01), Hennah
Crane Daniel C.
The U.S. Baird Corporation
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