| 摘要 |
PURPOSE:To improve working speed and working accuracy by periodically repeating the process for carrying-out working with the jetting-out working-liquid coaxially with a wire electrode and the process for carrying-out working with the jetting-out working-liquid in the direction aslantly crossing with the wire electrode. CONSTITUTION:In the wire-cut electric discharge machining, working feed is applied in a certain distance or for a certain time, jetting-out the working liquid under a pressure Pm different from the pressure Pf applied during the normal working into the working interval formed between a wire electrode 1 and a workpiece 4 in the direction aslantly crossing with the electrode 1. In this process, the part of a workpiece 18 which bulges-out into arcuate form is nearly selectively worked, and at the same time, the electrode 1 changes from arcuate form to straight-line form. Since working is carried-out by forming the working gap into the straight-line form along the straight line connecting a pair of wire guides 3 and 3', the straight-line characteristic of the electrode 1 increases in average during working, and working accuracy and working speed can be improved. |
