Metal deforming – By deflecting successively-presented portions of work during... – With feeding of discrete articles or orienting of work...
Patent
1992-05-26
1993-03-23
Larson, Lowell A.
Metal deforming
By deflecting successively-presented portions of work during...
With feeding of discrete articles or orienting of work...
72150, 72466, B21B 3902, B21D 905
Patent
active
051953439
ABSTRACT:
A pusher bar assembly for a multi-axis tube bender acts to insert and withdraw the bending support mandrel, as well as to push the tube through the bender. A hollow sleeve with a diameter equal to the tube has sufficient length to contain both the mandrel and a piloting plug, which can be inserted between the free ends of both the tube and sleeve. A mandrel bar is slidably received through the sleeve, and so can extend the mandrel out of a stored position of the sleeve into the tube and back. A stop means stops the mandrel bar to locate the mandrel at the proper place in the tube. A push pull means on the mandrel bar also pushes the plug to a point where it bridges the free ends of the tube and sleeve with the mandrel stops. Therefore, a high pushing force can be directed from the sleeve to the tube without the free ends collapsing inside one another.
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patent: 5031291 (1991-07-01), Shimokata
General Motors Corporation
Griffin Patrick M.
Larson Lowell A.
McKeon Michael J.
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