| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the need of machining a clearance groove in a work for a pinion cutter, to restrain increase in machining man-hours, and to smoothly machine a gear from one end of the work to the middle part without the lowering of work rigidity. SOLUTION: X and Y control axes of a machining center are controlled, a spindle on which the pinion cutter T is mounted is revolved along a circle taking the axis of a gear H to be machine in the work W on a table as the center, and simultaneously the C control axis is controlled to rotate the spindle at a fixed ratio corresponding to the revolution amount. After that, Z control axis is controlled to give a cutting feed in the Z-axis direction to the pinion cutter T, whereby in forming a tooth profile of the machined gear H in the work W, after a cutting blade Tc reaches a midway position (forming terminal position of the tooth profile) k2 in the Z-axis direction, the pinion cutter T is moved toward the straight line direction connecting the axis of the machined gear H and the center of the pinion cutter T under the control of the X and Y control axes to continue cutting feed until the cutting blade Tc leaves the work W. COPYRIGHT: (C)2007,JPO&INPIT
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