Relieved serrated dies for rotary punching units
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United States of America Patent
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-
Nov 11, 1986
Grant Date -
N/A
app pub date -
May 8, 1984
filing date -
May 8, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A serrated rotary die having a minimum die cutback angle .theta., wherein ##EQU1## where CL DIST is the centerline distance between punch and die axes of rotation, ##EQU2## MD is a die internal diameter at the die teeth roots, and HT is the height of the die over midpoint.
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