To provide a feed screw mechanism preventing damage to a female screw part of a nut by properly engaging a feed screw shaft and a rotary jig, in regard to a feed screw mechanism having a rotatively driven feed screw shaft, a female screw part screwed on the feed screw shaft, and a rotatively constrained nut reciprocated in an axial direction of the feed screw shaft by normal and reverse rotations of the feed screw shaft.
The feed screw mechanism is composed by providing rotation transmitting uneven parts engaging with rotation transmitting uneven parts of the rotary jig rotating the feed screw shaft on a tip of the feed screw shaft, and centering uneven parts engaging with centering uneven parts of the rotary jig.
COPYRIGHT: (C)2007,JPO&INPIT
SUZUKA SHINYA
ENDO MASARU
| JP2003131109A | 2003-05-08 | |||
| JPS6438260A | 1989-02-08 | |||
| JP2002214509A | 2002-07-31 | |||
| JPS52106896A | 1977-09-07 | |||
| JP2005173442A | 2005-06-30 |
Iwao Hirayama