Direct machining method of manufacture of isostress contoured di

Details Direct machining method of manufacture of isostress contoured di Direct machining method of manufacture of isostress contoured di

1977-05-18

1979-01-09

Moon, Charlie T.

Metal tools and implements, making

Blank or process

Die

29445, 29525, 29558, B21K 520

Patent

active

041332270

ABSTRACT:
A method of forming an isostress-contoured die from a metal workpiece by discreet, sequential machining 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 depressions are reduced by machining to form isostress-contoured surface portions between and surrounding the projections.

REFERENCES:
patent: 2165008 (1939-07-01), Rosenberg
patent: 2440963 (1948-05-01), Luce
patent: 2552455 (1951-05-01), Pond
patent: 3100411 (1963-08-01), Airlie
patent: 3151504 (1964-10-01), Pare et al.
patent: 3498158 (1970-03-01), Kougel
patent: 3895947 (1975-07-01), Sarka
patent: 3910138 (1975-10-01), Sinha et al.
patent: 4024623 (1977-05-01), Kun

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