Metal deforming – With use of control means energized in response to activator... – Metal deforming by use of roller or roller-like tool element
Patent
1992-08-28
1994-11-01
Larson, Lowell A.
Metal deforming
With use of control means energized in response to activator...
Metal deforming by use of roller or roller-like tool element
72 10, 72305, 72306, 72311, 7234294, 723792, 21912162, 2191218, B21D 504, B23K 2608
Patent
active
053598725
ABSTRACT:
The portion to be deformed of a metal sheet is heated by irradiating it with a laser beam which is scanned at a high speed, and, when the portion to be deformed has attained a predetermined temperature, a bending force is applied to the portion to be bent to perform bending of the metal sheet. When the shape of a metal sheet is to be worked into a circular arc of 90.degree. having a predetermined radius by means of six bending processes, the metal sheet is worked such that the working process is divided into six processes and the bending processes are sequentially performed after fixing a metal sheet edge of the metal sheet. The yield strength of a steel material is reduced when it is heated and a metal sheet is worked using a laser by which a local heating is possible. Dies are therfore unnecessary, whereby processing at low costs and an apparatus therefor may be achieved.
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Larson Lowell A.
Okuma Corporation
Schoeffler Thomas C.
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