Title:
BALL SPLINE UNIT AND METHOD OF FORMING OUTER CYLINDER OF BALL SPLINE UNIT
Document Type and Number:
WIPO Patent Application WO/1998/054474
Kind Code:
A1
Abstract:
To enable smooth circulation of balls without making a ball spline unit large in size and to correctly set a position of a resin portion formed on an outer cylinder to enable unitary forming. Balls (9) are held by a ball chain and at least either of no-load ball passages, retainer portions and an inner peripheral portion of a ball direction changeover passage is formed integral with an outer cylinder by insert molding, in which the outer cylinder is placed in a mold on the basis of load ball rolling grooves.
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Inventors:
HONMA MITSUAKI (JP)
MURATA TOMOZUMI (JP)
MURATA TOMOZUMI (JP)
Application Number:
PCT/JP1997/001853
Publication Date:
December 03, 1998
Filing Date:
May 30, 1997
Export Citation:
Assignee:
THK CO LTD (JP)
HONMA MITSUAKI (JP)
MURATA TOMOZUMI (JP)
HONMA MITSUAKI (JP)
MURATA TOMOZUMI (JP)
International Classes:
F16C29/06; F16C33/37; F16C33/38; F16C33/46; F16C33/64; (IPC1-7): F16C29/06
Foreign References:
| JPH08296641A | 1996-11-12 | |||
| JPH07317762A | 1995-12-08 | |||
| JPS4411482B1 | ||||
| JPS5597518A | 1980-07-24 | |||
| US4128279A | 1978-12-05 |
Other References:
See also references of EP 0916861A4
Attorney, Agent or Firm:
Sera, Kazunobu (8th floor 4-10, Higashi-Nihombashi 3-chom, Chuo-ku Tokyo, JP)
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