Bar material supplying device and numerical control machine tool having the same
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United States of America Patent
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Aug 15, 2017
Grant Date -
Jul 28, 2016
app pub date -
Sep 8, 2014
filing date -
Sep 18, 2013
priority date (Note) -
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Abstract
A bar material supplying device includes a feed rod having a leading end provided with a finger chuck, a feed rod servomotor and an air cylinder device that move the feed rod in a longitudinal direction to insert and pull the bar material into and from the finger chuck, and an NC device that controls driving of the feed rod servomotor and driving of the air cylinder device. The NC device controls the driving of the feed rod servomotor and the driving of the air cylinder device to move the feed rod in an operation of inserting and pulling the bar material into and from the finger chuck, and operates as an error allowable device that allows an error of an operation amount of the feed rod servomotor motor in the operation of inserting and pulling the bar material into and from the finger chuck.
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