| 摘要 |
PROBLEM TO BE SOLVED: To perform the groove working to a work with the excellent concentricity with the reference circle by providing a eccentricity detecting means and a deviation correcting means for correcting the indexing angle to be set by a indexing rotary table and the notched variable to be set by a notching table. SOLUTION: A table control part 2 receives a radius R0 of the reference circle of a work, the number of groove working (n) on the referential circumstance, a indexing angle α of a groove to be worked, and the working condition such as the notched variable from an input means 20 such as a key board, and while receives the eccentric variable L and the eccentric angle θ of the work held by a chuck from a vibration of reference circle measuring sensor, and a CPU 21 computes the corrected variable on the basis of these information. the CPU 21 controls the rectangular table moving operation by each servo motor 22, 23 for operating an indexing table and a notching table. Encoders 22a, 22b for detecting the rotation of each servo motor 22, 23 perform the feedback control of the table moving operation. |
