Metal deforming – With 'coating' of work
Patent
1983-08-15
1984-12-25
Combs, E. Michael
Metal deforming
With 'coating' of work
29424, B21D 3106, B23P 1700
Patent
active
044895801
ABSTRACT:
A flat workpiece such as a sheet metal workpiece is deformed by impacting e surface of the workpiece with one or several impacting tools while supporting at least a portion of the workpiece surface opposite the impacted surface. In order to control the deforming impact effect for achieving the intended shape of the workpiece, the impact strength of uniform drive impulses is modified in accordance with the desired shape. For this purpose the impacts are damped in accordance with a predetermined surface pattern of impact strengths corresponding to the desired shape. Such damping is accomplished by coating the workpiece surface prior to the impacting with a damping layer or layers having a different damping effect in different places on the surface of the workpiece in accordance with the mentioned pattern, whereby the uniform impact strength is modified in its effect in accordance with the pattern over the surface of the workpiece.
REFERENCES:
patent: 1582571 (1926-04-01), Budd
patent: 2289311 (1942-07-01), Wellman
patent: 2960763 (1960-11-01), Reichl
patent: 2960764 (1960-11-01), Reichl
patent: 3524243 (1970-08-01), McKowen et al.
Combs E. Michael
Fasse W. G.
Kane, Jr. D. H.
Messerschmitt-Boelkow-Blohm Gesellschaft mit beschraenkter Haftu
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