| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a ball screw allowing a circulation part for forming a ball return path to be surely fixed to a nut for a long time, and reducing the cost of a member for fixing the circulation part. <P>SOLUTION: A projection part 33 is integrally formed of synthetic resin on both side surfaces 31a of a body 31 of the circulation part 3. A metal mounting part 4 is mounted on the projection part 33 to allow a bolt 5 to pass through a through-hole 42a of the mounting part 42. The bolt 5 is screwed with a female screw formed on an outside flat part 12 of the nut 1 so as to fix the circulation part 3 to the nut 1. <P>COPYRIGHT: (C)2012,JPO&INPIT |
