PUNCH FOR PUNCHING SHEET METAL, SHEET METAL PUNCHING APPARATUS HAVING THE PUNCH, AND METHOD THEREFOR
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United States of America Patent
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Issued Date -
Apr 28, 2011
app pub date -
Jun 18, 2008
filing date -
Jun 18, 2008
priority date (Note) -
Abandoned
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Abstract
A sheet metal punching apparatus 1 includes: an upper die holder 2 which is raised and lowered by a hydraulic ram and the like; a pressing plate 3 secured to the upper die holder 2; a pressing pad 5 suspended from the upper die holder 2 through a resilient member 4; a punch holder 7 secured to the pressing pad 5; a lower die 9 on which sheet metal 8 to be subjected to punching is placed; and a die 10 embedded in the lower die 9.
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