| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve an attachment structure of a screw shaft end of a ball screw whose screw shaft end is attached in a housing through two rolling bearings, and in which the inner rings of the rolling bearings are fixed while being restrained in the axial direction on the outer circumferential surface on which a spiral groove of the screw shaft of the ball screw is formed. <P>SOLUTION: The left end 13 of the screw shaft 10 is attached to the housing 6 through the two rolling bearings 5A and 5B. One bushing 2 with slits and two bushings 3 are arranged between the outer circumferential surface 11, on which the spiral groove 11a is formed, of the screw shaft 10 and the inner rings 51 of the two rolling bearings 5A and 5B. The inner rings 51 are fixed to the screw shaft 10 being restrained in the axial direction by a radially inward deformation of the bushing 2 with slits accompanying the fastening of a fastener 4. <P>COPYRIGHT: (C)2012,JPO&INPIT |
