| 摘要 |
PURPOSE:To make not to leave unmachined part at a corner part, by reversing a direction of rotation of a direction of machining after first electric discharge machining. CONSTITUTION:A first machining locus 1 is obtained by carrying out first machining in the direction of an arrow by starting the machining from its starting point P0. Then, a second locus 2 is obtained by carrying out a second machining as shown by an arrow in the reverse direction of the first machining by making the starting point of the second machining identical with the starting point P0 of the first machining. A notch for offset alpha is given to a wire for the machining of the second locus 2. An amblicus 3 is machined by the second machining. A shape 4 of a corner in the first machining is corrected into a shape 5 of the coner by the second machining and an unmachined part at the corner is removed completely. |
