摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball spline which can prevent indentation in a spline track even when receiving excessive torque. Ž<P>SOLUTION: In a screw spindle 2, an upper end section (torque input side end section) of a part located within a ball spline outer case 4 is relatively easier to twist compared with a lower end section (opposite torque input side end section) by a torque applied through a ball screw nut; and each of spline tracks 4a, 4b of a ball spline outer case 4 is inclined according to a twist of this screw spindle 2. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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