Press machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Oct 27, 2020
Grant Date -
Nov 23, 2017
app pub date -
Sep 9, 2015
filing date -
Dec 26, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A drive unit drives a slide which vertically reciprocates for pressing the workpiece. A detection unit detects positional information about the slide. A speed control unit controls the speed of the slide by the drive unit, based on motion information defining operation of the slide. A stoppage determination calculation unit sets a deceleration start point at which deceleration of the slide is to be started, based on the motion information and a set point at which the slide is to be forced to stop. A speed control unit determines whether an abnormality signal regarding transportation of the workpiece is input, when the slide reaches the deceleration start point based on the positional information about the slide detected by the detection unit. The speed control unit performs deceleration control for the slide so that the slide is stopped at the set point, when determining that the abnormality signal is input.
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