Mechanism for and method of shifting cam mechanisms in a press f

Details Mechanism for and method of shifting cam mechanisms in a press f Mechanism for and method of shifting cam mechanisms in a press f

1983-01-28

1986-11-11

Crane, Daniel C.

Metal deforming

With cutting

By composite tool

72327, 72333, 83194, 83178, 83623, B21D 2822, B21D 2830

Patent

active

046215123

ABSTRACT:
Mechanism for and method of shifting cam mechanisms in a press for pressing workpieces with depressed portions comprise a combination of a first single cam mechanism for retracting a die by a distance equal to the depth of a depressed portion of a workpiece and a second single cam mechanism for pressing the workpiece to work the depressed portion. Said single mechanisms are provided between a bottom form and a top form being vertically movable toward and away from said bottom form. Said first single cam mechanism is composed of a pad positioned downwardly of said top form, a pin mounted on and extending downwardly from said pad, a first cam follower mounted on said bottom form and movable in response to depression of said pin, and a second cam follower mounted on said bottom form. Said second single cam mechanism has a punch for punching the depressed portion of the workpiece and is composed of a fixed cam mounted on the top form, and a third cam follower mounted on said bottom form and supporting said punch.

REFERENCES:
patent: 1610982 (1926-12-01), Theberath
patent: 1702378 (1929-02-01), Booth
patent: 1766217 (1930-06-01), Booth
patent: 1807824 (1931-06-01), Booth
patent: 1825180 (1931-09-01), Copple
patent: 1878520 (1932-09-01), Hughes
patent: 1920303 (1933-08-01), Grotnes
patent: 2202894 (1940-06-01), Bihler
patent: 3053210 (1962-09-01), Kowalski

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