| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a feed screw mechanism that reduces the effect of a moment load on a nut member to increase durability. <P>SOLUTION: The feed screw mechanism includes: a feed screw shaft 21 having a male screw part 21a; a nut member 22 having a female screw part to be engaged with the male screw part 21a of the feed screw shaft 21; a connection member 25 that moves along a shaft center of the feed screw shaft together with the nut member due to rotation of the feed screw shaft 21; a guide rod 23 arranged parallel to the feed screw shaft 21; and a slider 24 that moves along the shaft center direction of the guide rod 23. The connection member 25 includes a nut housing part 33 that houses the nut member 22 to allow the connection member 25 to rock with respect to the nut member 22. An alignment mechanism part S is provided between the outer surface of the nut member 22 and the inner surface of the nut housing part. <P>COPYRIGHT: (C)2012,JPO&INPIT |
