METHOD OF CONTROLLING WIRE CUT ELECTRIC DISCHARGE MACHINING APPARATUS

摘要

PCT No. PCT/JP81/00344 Sec. 371 Date Aug. 25, 1982 Sec. 102(e) Date Aug. 25, 1982 PCT Filed Nov. 18, 1981 PCT Pub. No. WO82/02164 PCT Pub. Date Jul. 8, 1982.A method of controlling a wire-cut electric discharge machine to prevent cutting errors when cutting a corner CN which are caused by flexing of a wire electrode 1 during electric discharge cutting of a workpiece. Electric discharge is stopped when a rectilinear slot is cut to measure an amount of flexing of the wire electrode 1, and then the measured amount of flexing is used to effect an arithmetic operation to calculate a commanded speed or an interval of time in which relative movement between the wire electrode and the workpiece is arrested at the corner CN. The corner CN is cut under the control of the calculated commanded speed or interval of time in which the relative movement is arrested.