Forming method, forming tools and elastic punch
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United States of America Patent
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-
Feb 29, 2000
Issued Date -
N/A
app pub date -
Nov 19, 1998
filing date -
Apr 23, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A forming method of forming a plate-shaped workpiece using a female tool having a concave section of a desired shape and a male tool which matches with the female tool, includes the following steps: providing an elastic punch in a cylindrical holder provided in the male tool; pressurizing and compressing the elastic punch relatively by a pressuring member; pressing the holder against the workpiece by means of one portion of the elastic punch; and projecting one portion of the elastic punch from the holder so as to deform a portion of the workpiece to be processed according to the shape of the concave section of the female tool so that the workpiece is formed in a state such that the workpiece is nipped pressingly between the female tool and the holder.
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