JPS6141924U

JPS6141924U - spiral ball spline

Info

Publication number: JPS6141924U
Application number: JP12703684U
Authority: JP
Inventors: 実井沢; 達雄津田
Original assignee: 日本特殊ベアリング株式会社
Priority date: 1984-08-23
Filing date: 1984-08-23
Publication date: 1986-03-18
Also published as: JPS6218737Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は全体の一部切り欠き側面図、第２図は同上一部
切り欠き平面図、第３図６−まエンドキャップの底面図
、第４図は同上ｘ−ｘ’線階段断面図、第５図はスリー
ブの平面図、第６図はスリーブにエンドキャップを組み
合わせた状態の要部の′斜視図、第７図はエンドキャッ
プの突体部分を示す要部の斜視図、第８図はスリーブの
搬路部分を示す要部の斜視図である。図中符合、ａはスプライン軸、ｂはスリーブ、Ｃはスチ
ールボール、ｄはエンドキャップ、２はボールグループ
、３はリターンホール、４は搬路、ｄ′は突体、−５は
連通孔である。Fig. 1 is a partially cutaway side view of the whole, Fig. 2 is a partially cutaway plan view of the same as above, Fig. 3 is a bottom view of the end cap, Fig. 4 is a sectional view of the steps taken along line x-x' of the same as above. , FIG. 5 is a plan view of the sleeve, FIG. 6 is a perspective view of the main parts when the end cap is assembled with the sleeve, FIG. 7 is a perspective view of the main parts showing the projecting part of the end cap, and FIG. The figure is a perspective view of the main parts showing the conveyance path portion of the sleeve. In the figure, a is a spline shaft, b is a sleeve, C is a steel ball, d is an end cap, 2 is a ball group, 3 is a return hole, 4 is a conveyance path, d' is a protrusion, -5 is a communication hole. be.

Claims

[Scope of utility model registration request]

It consists of a spline shaft and a sleeve, and each of the spline shaft and sleeve has a minimum torsion angle β of 3 with respect to the axial direction.
Approximately 0 degree ball groups are placed equally on the circumference, each ball group on the inner peripheral surface of the sleeve has a corresponding return hole parallel to the axial direction, and both ends of the sleeve body are covered with end caps. In the spiral ball spline, the end cap has a communication groove that communicates the ball group and the return hole on the bottom surface to form a ball circulation path, and this ball circulation path is filled with a large number of steel balls. To form a communication groove between the ball group and the return hole, the sleeve body is cut so as to be inclined in the circumferential direction and the outer circumferential direction from the inner circumferential wall surface in order to form a conveyance path at an angle of α from the ball group to the return hole. A protrusion that matches the cut surface of the sleeve body is formed on the bottom surface of the end cap that covers the filter sleeve, and a communication groove that matches the ball group and return hole is formed from the peripheral wall side of the protrusion between the protrusion and the end cap. A structure characterized by an arc-shaped cross section extending to the bottom.