| 摘要 |
PURPOSE:To reduce the vibration and derailment of a relatively long and narrow wire electrode while permitting said electrode to straightforwardly travel on a desired rail without the looseness thereof by subjecting said electrode to electric discharge machining while permitting said electrode to travel under the condition with rotary torsional stress. CONSTITUTION:An oblique roller 8 rotatably supported is arranged between a positioning guide 3 and a guide roller 3a on the top of a wire electrode 2. The electrode 2 travels being guided by the roller 3a after it is allowed to pass round the oblique roller 8, and hereby a rotary torsional stress is loaded on the electrode 2 by leading it to turn around its shaft. When the electrode is fed to a wire cut discharge machining unit in opposition to a workpiece 1, the vibration generated by the sliding movement of the electrode against guides 3, 4 and the vibration generated by the injection of a processing solution from processing solution injecting nozzles 10, 11 are absorbed in form of reduction of the torsion of the electrode 2, so that it is possible to improve the processing accuracy and yield in precision machining. |
