| 摘要 |
PCT No. PCT/JP81/00421 Sec. 371 Date Aug. 25, 1982 Sec. 102(e) Date Aug. 25, 1982 PCT Filed Dec. 28, 1981 PCT Pub. No. WO82/02355 PCT Pub. Date Jul. 22, 1982.A cutting control method for reducing cutting errors at a corner due to flexing of a wire electrode in a wire-cut electric discharge machine in which a voltage is applied between the wire electrode and a workpiece to cut the latter with electric discharge energy while moving the workpiece relatively to the wire electrode based on cutting command data for cutting the workpiece to a predetermined shape. An amount of override (K) is determined by an override arithmetic unit (103b) using data (r) on the radius of curvature of a corner angle ( theta ) data which are given as the cutting command data from a paper tape (101). A relative speed (F) is derived by a relative speed arithmetic unit (103f) from the amount of override (K) and a commanded feeding speed (F0). Motors (MX, MY) are rotated by pulse distributors (105X, 105Y) and servo circuits (SVX, SVY), respectively, based on the relative speed (F) which is lower than the commanded feeding speed (F0) to move the workpiece with respect to the wire electrode for electric discharge cutting of the corner.
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