ROLLER SCREW AND METHOD OF PRODUCING THE SAME

Title:

ROLLER SCREW AND METHOD OF PRODUCING THE SAME

Document Type and Number:

WIPO Patent Application WO/2007/004404

Kind Code:

A1

Abstract:

A roller screw that can receive loads in both axis directions of a screw shaft and where a roller end surface and a roller rolling groove are less likely to interfere with each other. Two or more roller rolling paths (3a, 3b) are arranged between a roller rolling surface pair (1a, 1b) of a screw shaft (1) and a roller rolling surface pair (2a, 2b) of a nut (2). Rollers (4a) are parallelly arranged on one (3a) of the roller rolling paths, and also, rollers (4b) are parallelly arranged on the other rolling path (3b). The rollers (4a) arranged on the one roller rolling groove (3a) can take a load in one ((1)) axis direction of the screw shaft (1), and the rollers (4b) arranged on the other roller rolling groove (3b) can take a load in the opposite axis direction ((2)) of the screw shaft (1).

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Inventors:

UESUGI MASAKAZU (JP)
NISHIMURA KENTARO (JP)
FUJITA SATOSHI (JP)
YOSHIDA AKIMASA (JP)
NAGAI SATORU (JP)
ARAI HIROYUKI (JP)

Application Number:

PCT/JP2006/312097

Publication Date:

January 11, 2007

Filing Date:

June 16, 2006

Export Citation:

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Assignee:

THK CO LTD (JP)
UESUGI MASAKAZU (JP)
NISHIMURA KENTARO (JP)
FUJITA SATOSHI (JP)
YOSHIDA AKIMASA (JP)
NAGAI SATORU (JP)
ARAI HIROYUKI (JP)

International Classes:

F16H25/24; F16H25/22

Foreign References:

US3329036A	1967-07-04
JP2001241527A	2001-09-07

Other References: