| 摘要 |
PURPOSE:To perform a piercing work in a circular shape at a high speed without calculating a working locus. CONSTITUTION:A ROM4A storing a cosine wave signal and a ROM4B storing a sine wave signal are provided. The respective contents are read out by a counter 3 counting the signal with a frequency determined by an oscillator 1 and a frequency divider 2, the respective contents and a hole diameter (r) are multiplied together by multiplication devices 6A and 6B, reference position signals X and Y are added to them, and the scanners 12 and 14 are driven. In this way, the piercing work in a circular shape is performed at a high speed. |
