MULTI-PITCH SCREW, MULTI-PITCH NUT, FEED SCREW DEVICE USING THE SCREW AND NUT, AND METHOD OF PRODUCING THE NUT

Title:

MULTI-PITCH SCREW, MULTI-PITCH NUT, FEED SCREW DEVICE USING THE SCREW AND NUT, AND METHOD OF PRODUCING THE NUT

Document Type and Number:

WIPO Patent Application WO/2004/051098

Kind Code:

A1

Abstract:

Flat portions (12a) and inclined portions (12b) are alternately provided on a thread (12) of a multi-pitch screw (10). Flat portions and inclined portions are also provided on a thread of a multi-pitch nut that is screwed on the multi-pitch screw (10). These realize a screw and nut that reliably achieve loosening prevention in a stepping manner. The screw and nut enable smooth high-speed feeding. Self-locking works in a stepping manner even if torque from a drive source is cut out.

Inventors:

FUJII HIROSHI (JP)
SUGIYAMA KATSUHIRO (JP)
MITSUKUCHI MASASHI (JP)
KATAYAMA KENICHI (JP)
MORIGUCHI YOSHINORI (JP)

Application Number:

PCT/JP2003/013508

Publication Date:

June 17, 2004

Filing Date:

October 22, 2003

Export Citation:

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Assignee:

IMASEN ELECTRIC IND (JP)
INST NAGOYA IND SCIENCE RES (JP)
FUJII HIROSHI (JP)
SUGIYAMA KATSUHIRO (JP)
MITSUKUCHI MASASHI (JP)
KATAYAMA KENICHI (JP)
MORIGUCHI YOSHINORI (JP)

International Classes:

F16B33/02; F16B39/30; F16H25/24; (IPC1-7): F16B39/30; F16H25/24

Foreign References:

JPS5992253U	1984-06-22
JPS6274475U	1987-05-13
JPS6048931U	1985-04-06
JPS63152762A	1988-06-25
JPS4745973B1	1972-11-20
JP3039156U	1997-07-11

Other References: