Operation method of electric press working machine
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United States of America Patent
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Jun 2, 2015
Grant Date -
Sep 25, 2014
app pub date -
Nov 21, 2011
filing date -
Nov 15, 2011
priority date (Note) -
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Abstract
An operation method of an electric press working machine including a frame body, a crown, and a plurality of support posts, a first slide that slides on the support posts, a second slide that slides on the support posts, a first-side drive source that drives the first slide, a second-side drive source that drives the second slide, and either a first upper die that is attached to correspond to the first slide or a second upper die that is attached to correspond to the second slide or both. The method includes: a step of moving the first and second slides to a first position; a step of moving the second slide to a second position while keeping the first slide at the first position; and a step of moving the second slide to a third position while keeping the first slide at the first position.
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