Title:
SPIRAL BALL SPLINE
Document Type and Number:
Japanese Patent JPS5676718
Kind Code:
A
Abstract:
PURPOSE:To enable positioning through the rotation of a shaft, by enabling rotation in terms of a lead angle. CONSTITUTION:Grooves 1', which are provided with ball exposure holes 1, are made at the same lead angle as the grooves 14 of a spiral spline shaft 13 and endlessly connected to other grooves 2 so that three ball circulation passages whose number is equal to that of the grooves 14 of the spiral spline shaft 13 are integrally provided. A retainer is (a) is thus manufactured. The developed shape of ball track constituting members (b) is an arc which is the major circumferential part of an ellipse coincident with a cut-off surface which would be made by cutting off a cylinder in accordance with a lead angle. For that reason, rotation can be caused at a desired lead angle. This results in enabling positioning action by the rotation of the shaft 13.
Inventors:
IZAWA MINORU
SATOU TAKAYUKI
TSUDA TATSUO
SATOU TAKAYUKI
TSUDA TATSUO
Application Number:
JP15704080A
Publication Date:
June 24, 1981
Filing Date:
November 10, 1980
Export Citation:
Assignee:
NIPPON TOKUSHIYU BEARING KK
International Classes:
F16C29/06; F16C29/00; F16H25/22; (IPC1-7): F16C29/06; F16H25/22
Domestic Patent References:
| JPS4825135B1 | 1973-07-26 | |||
| JPS4725411A |