| 摘要 |
PROBLEM TO BE SOLVED: To provide a motorized press machine capable of preventing over-rolling by performing operation-stop control with a high responsive property by means of torque feedback of a servo motor. SOLUTION: A high rank controlling device 15 outputs control pulse signals 16 instructing rotation of the servo motor 8 to a servo driver 18, and the servo driver 18 outputs control voltage to the servo motor 8 according to the control pulse signals 16. The servo driver 18 also detects loaded torque of the servo motor 8, and outputs it to a comparator 20 as detected torque signals 19 of an analog voltage value. The high rank controlling device 15 outputs torque signals 21 for comparison corresponding to stop torque to the comparator 20, and the comparator 20 compares the torque signals 21 for comparison with the detected torque signals 19. When the detected torque signals 19 are greater than the torque signals 21 for comparison, torque-up signals 22 are input to an interruption processing port 23 of the high rank controlling device 15, and output of the control pulse signals 16 is suspended on that occasion. COPYRIGHT: (C)2005,JPO&NCIPI
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