JPH0373747U

JPH0373747U -

Info

Publication number: JPH0373747U
Application number: JP13526089U
Authority: JP
Priority date: 1989-11-21
Filing date: 1989-11-21
Publication date: 1991-07-24

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例によるボールねじ
支持装置のボールねじ非駆動時の状態を示す図、
第２図はこの考案によるボールねじ駆動時の状態
わ示す図、第３図は従来のボールねじ支持装置の
一例を示す図である。図中、１……支持軸受内輪、２……支持軸受外
輪、３ａ……ボールねじ軸に垂直な振動成分を吸
収するばね、３ｂ……ボールねじ長手方向の振動
成分を吸収するねじ、３ｃ……固定力を発生する
ばね、４……固定ピン、５……永久磁石、６……
電磁石、７……内部ハウジング、８……ボールね
じ、９……外部ハウジング、１０……固定穴、Ｘ
，Ｙ，Ｚ……図中の座標である。なお、図中の同
一符号は同一又は相当部分を示す。 FIG. 1 is a diagram showing a state of a ball screw support device according to an embodiment of this invention when the ball screw is not driven;
FIG. 2 is a diagram showing the state when the ball screw is driven according to this invention, and FIG. 3 is a diagram showing an example of a conventional ball screw support device. In the figure, 1... Support bearing inner ring, 2... Support bearing outer ring, 3a... Spring that absorbs vibration components perpendicular to the ball screw axis, 3b... Screw that absorbs vibration components in the longitudinal direction of the ball screw, 3c... ...Spring that generates fixing force, 4... Fixing pin, 5... Permanent magnet, 6...
Electromagnet, 7...Internal housing, 8...Ball screw, 9...External housing, 10...Fixing hole, X
, Y, Z... are coordinates in the figure. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

A bearing inner ring having a hole in the center into which a ball screw is inserted, a bearing outer ring disposed outside the bearing inner ring, a ball that brings the inner and outer rings into rolling contact, and a bearing provided to hold the bearing outer shaft. an inner housing having a supply groove on an outer surface; a first spring having one end fixed to the inner housing;
a second spring having one end fixed to the inner housing in two directions perpendicular to the spring;
a hollow outer housing fixed to the other end of the spring; an electromagnet provided in the outer housing; and an engagement groove provided in the inner housing near the electromagnet corresponding to the second and second springs; A ball screw support device comprising: a pin that engages with the pin; a permanent magnet fixed to one end of the pin; and a third spring provided between the pin and an external housing.