| 摘要 |
PCT No. PCT/JP81/00295 Sec. 371 Date Jun. 18, 1982 Sec. 102(e) Date Jun. 18, 1982 PCT Filed Oct. 23, 1982 PCT Pub. No. WO82/01602 PCT Pub. Date May 13, 1982.In order to permit manual operation under a condition where the axial direction of a tool and the direction of a hole to be machined in a workpiece are held in agreement, the tool of a radius gamma is rotated by theta in the vertical rotational direction and by rho in the horizontal rotational direction in a orthogonal coordinate system and in a spherical coordinate system the origins of which coincide with the center of rotation of the tool. Upon doing so, in the orthogonal coordinates, the position of the front end of the tool becomes X0= gamma sin theta xcos rho , Y0= gamma sin theta xsin rho and Z0= gamma cos theta . Therefore, a train of pulses (Hp) from a manual pulse generator are distributed as X-, Y- and Z-axial components in the proportion to the above values by a manual pulse distribution circuit, and motors for the respective axes are driven through servo circuits by the pulses.
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