PRESS FORMING MACHINE, PRESS FORMING METHOD USING PRESS FORMING MACHINE AND ROTOR CORE OF AC GENERATOR FOR AUTOMOBILES MANUFACTURED BY PRESS FORMING METHOD
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United States of America Patent
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Issued Date -
Nov 13, 2014
app pub date -
Aug 9, 2013
filing date -
Aug 9, 2012
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Abstract
A taper shaped steel rod-like member allows a cold press molding apparatus to reduce burrs generated in tooling without the use of lubrication while also extending tool live. The method and process is characterized by holding the preshaped processed material on a backside tool, while press-contacting the processed material to a free rotation roll rotating toward the tip element on the processed material, and shaping a taper shape by plastic-reshaping of the processed material.
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