| 摘要 |
PROBLEM TO BE SOLVED: To position a pinion cutter for a workpiece without causing circular arc interpolation error and to machine a gear in the workpiece efficiently and precisely using a machining center. SOLUTION: Each control shaft of the machining center is controlled by a numerical controller, and a pinion cutter T mounted on a main spindle moves to a plurality of machining positions p1, p2, p3, etc., set above the number of teeth of the gear sequentially by a pitch angleΔαobtained by dividing a shaft axis c2 along the peripheral direction of a circle G centered a shaft axis c1 of the gear to be machined in the workpiece W and is positioned. After the pinion cutter T is rotated and positioned by a pitch angleΔβdivided by corresponding to each machining position around the shaft axis every time it is positioned at each machining position, cutting feed is given in the direction of Z-axis and a tooth face of the gear is formed in the workpiece W by a cutting edge Tc, and the pinion cutter T goes round around the center c1 of the workpiece to complete machining of the gear.
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