B - Operations – Transporting – 21 – K
Patent
B - Operations, Transporting
21
K
76/2
B21K 5/20 (2006.01) B21D 37/20 (2006.01)
Patent
CA 1086993
DIRECT MACHINING METHOD OF MANUFACTURE OF ISOSTRESS CONTOURED DIES Abstract of the Disclosure A method of forming an isostress-contoured die from a metal workpiece by discreet, sequential machin- ing steps. A plurality of spaced-apart truncated conoidal projections, arranged in repetitive diamond-shaped patterns, are formed from the workpiece. Depressions are machined in the workpiece portions associated with each diamond pattern and the ridges between adjacent depres- sions are reduced by machining to form isostress-contoured surface portions between and surrounding the projections. S P E C I F I C A T I O N
302502
Crowe John J.
Kun Leslie C.
Nies George E.
Hopley William G.
Union Carbide Corporation
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