Double action extrusion press
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Feb 3, 2014
filing date -
May 24, 2013
priority date (Note) -
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Abstract
A double action extrusion press has: a main crosshead provided freely movable with the application of pressure in an axial direction by a main cylinder and having a pressing system disposed on the tip thereof; and a piercer cylinder built into the main cylinder and provided within the main ram, allowing a mandrel to slide within the pressing system and the main crosshead. The double action extrusion press complements the extrusion force by force equivalent to a mandrel pull force acting on a mandrel stop rod by affixing the piercer cylinder in contact to a piercer crosshead that is joined with the mandrel stop rod and applying hydraulic force to the rod side of the piercer cylinder.
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