| 摘要 |
<p>SPLINE AND SHAFT UNIT A unit composed of a ball spline and a shaft having a polygonal cross section, the ball spline including an outer sleeve formed in its inner peripheral surface with ballcirculating grooves in vertically or horizontally symmetrical disposition, two separated holders each having an angle slightly larger than an angle .alpha. when assembled in the outer sleeve and holding a desired number of balls, the holders assembled in the outer sleeve with being inflected inwardly, and a pair of holder retainers fitted to the opposite opening ends of the outer sleeve; and the shaft formed with four ballcirculating grooves in the opposite sides of its opposite two sides and inserted in the ball spline.</p> |
