| 摘要 |
PROBLEM TO BE SOLVED: To provide an array shape machining method and device, which properly suppress rotary deflection of a rotary main shaft and accurately and easily align an array surface forming position of a workpiece with the rotary main shaft, and to provide a die for forming an optical component and the optical component. SOLUTION: The machining device 1 compensates for deviation of rotational balance of the rotary main spindle 2 resulting from the movement of the workpiece 8 by allowing a motor 13 to automatically move a dummy workpiece 9, which is held by a dummy holder 7 and has the same weight as the workpiece 8, over a pitch distance in a direction opposite to a moving direction of the workpiece 8 along a slide table 5 for the dummy via a ball screw 12 every time a motor 11 moves the workpiece 8 held by a workpiece holder 6 over the pitch distance along a slide table 4 for the workpiece via a ball screw 10. The machining device 1 thus corrects the deviation of the rotational balance of the rotary main shaft 2 with ease and performs easy, prompt and highly accurate machining to form array surfaces 20a, 20b, etc.
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