| 摘要 |
PURPOSE:To prevent generation of a residual machined part or deformation of a work when cutting work is performed in the method of wire cut electric dischage machining, by arranging its machining liquid and condition for adhering material susceptible of being accumulated to the work and closing a machined groove then holding a falling part. CONSTITUTION:A work 12 is electric discharge machined by a wire cut electrode 10, then adhering material 24 is acumulated to an end of the work 12 at the side the wire electrode 10 is fed. To increase an accumulated amount of this adhering material, electrolytic action by applied voltage is reduced. That is, such machining conditions are required as increase of specific resistance of machining liquid, decrease of mean machining voltage, increase of capacity of a capacitor in an electric discharge circuit, high frequency of applied voltage, etc. If the accumulated amount of the adhering material 24 is increased to close a machined groove 16, a falling part of the work is held by the adhering material 24, then deformation of the work or generation of a residual machined part can be prevented at completion of machining work. |
