| 摘要 |
<p>A wire electrode, which is drawn from a supply reel, passed through a predetermined passage, used for processing a workpiece and recovered, is utilized. This wire electrode is passed through the portion of a workpiece which is to be processed, and then reversed along the same path to be passed through the same portion of the workpiece again and recovered. These two parts, i.e., the forwardly-moving and backwardly-moving parts, of the wire electrode are applied to the processing of the workpiece. During this processing operation, these two parts of the wire electrode are fed in the opposite directions in a parallel- and closely-contacting state, and set in the direction of a normal or a tangent to a processing contour. This processing method enables in comparison with a processing method of this kind using a single wire electrode a wider processing clearance to be obtained, and the processing efficiency and accuracy to be improved.</p> |
