Patent ID: 9649708
Date: 2017-05-16
CPC Classifications: B23H,G05B

Claim:
1. A wire electric discharge machine including a reel which is supported by a column and around which a wire electrode is wound, and an upper wire guide and a lower wire guide which support the wire electrode that is drawn out from the reel, and carrying out electric discharge machining of a workpiece fixed on a table by relatively moving the wire electrode extended between the upper wire guide and the lower wire guide with respect to the workpiece according to a command of a machining program, the wire electric discharge machine comprising: a wire electrode slanting amount storage device configured to store a relationship between a weight of the reel and a slanting amount of the extended wire electrode; a compensation amount calculating device configured to determine a compensation amount for the slanting of the wire electrode based on a controller configured to relatively move the wire electrode with respect to the workpiece so as to compensate the slanting of the wire electrode by the compensation amount-determined by the compensation amount calculating device.