| 摘要 |
PROBLEM TO BE SOLVED: To improve the grinding efficiency and enhance the accuracy of the finishing by inclining a rod grinding wheel by a prescribed angle relative to a work axis, moving it parallel to the work axis, and grinding a spline ball groove in the work bore. SOLUTION: A grinding spindle 1 and a grinding wheel 4 or an inside/outside double layer structural body with a first and a second grinding wheel holder 2, 3 are made to incline by a prescribed angleβdeg. relative to a work axis Lb and moves parallel to the work axis Lb. The grinding wheel 4 starts from a dress position, abuts on the bore of the work W in a prescribed position A, and starts the grinding of a spline ball groove. The grinding wheel 4 moves in the same direction with its attitude held as it is and implements a grinding process for providing a spline ball groove b1 ground in a grinding end position B. When the grinding wheel 4 reaches the grinding end position B, the grinding spindle 1 is drawn up. Even then, the inclined angleβdeg. of the grinding wheel 4 is unchanged.
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