METHOD FOR PREVENTING COLLISION OF A MOVING SHAFT OF A WIRE ELECTRIC DISCHARGE MACHINE.

申请公布号:
EP0676254(A1)
申请号:
EP19940927103
申请日期:
1994.09.27
申请公布日期:
1995.10.11
申请人:
FANUC LTD.
发明人:
KITA, YUKI, ROOM 10-203, FANUC MANSHION HARIMOMI;ITO, MASAYA, FANUC DAI-3 VIRA-KARAMATSU;FUJITA, MINORU, FANUC DAI-3 VIRA-KARAMATSU
分类号:
B23H7/06;B23H7/02;B23H7/26;B23H11/00;(IPC1-7):B23H7/02
主分类号:
B23H7/06
摘要:
<p>A method for preventing collision of a moving shaft of a wire electric discharge machine in which at least one moving shaft (8) is driven and controlled by a servomotor (M) comprising the steps of configuring a control system for a servomotor for the moving shaft (8) which drives and controls at least one moving shaft so as to include therein a disturbance estimating observer, allowing the disturbance observer to estimate the load of a disturbance applied to the moving shaft, comparing the estimated disturbance with a pre-set value, and judging that the moving shaft is brought into collision with an obstacle when the estimated disturbance exceeds the pre-set value, thereby preventing a damage from the collision of the moving shaft of the wire electric discharge machine through the collision detection resulting from the judgement. &lt;IMAGE&gt;</p>
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