Metal deforming – With cutting – By composite tool
Patent
1976-02-23
1977-07-19
Duzan, James R.
Metal deforming
With cutting
By composite tool
72337, 72347, 72350, 113 1G, B21D 3102
Patent
active
040360563
ABSTRACT:
Single-slide press with single work-input stroke and other characteristics and advantages of single-action press carries out multiple functions of double or triple-action presses in the manufacture of cup-shaped articles. A blank is cut from flat rolled sheet metal and clamped while being drawn into a cup shape; the drum cup can be redrawn into a cup of smaller diameter and greater sidewall height. Work-input force applied to the work product is modified as required for each step with fluid controlled cylinder and piston means mounted to permit relative movement of portions of the single slide means for carrying out the individual steps in sequence.
REFERENCES:
patent: 2075847 (1937-04-01), Hothersall
patent: 2150890 (1939-03-01), Franghia
patent: 3274818 (1966-09-01), Henrickson
patent: 3295352 (1967-01-01), Middlestadt
Duzan James R.
National Steel Corporation
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