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JPH0552218A Expired / Lapsed JP ⏱️ 0.0 years remaining

Linear motion guide device having ball screw and method of pre-loading ball screw

Assignee: THK Co Ltd
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Filing: 1991-08-23
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Granted: —
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Expires: 2011-08-23
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】 ボールねじ部分のボールに軸方向の予圧を付 与し得るボールねじ付直線運動案内装置およびボールね じの予圧付与方法を提供し、もって軸方向バックラッシ ュを解消する。 【構成】 互いに平行に設けられる一対の軌道台と、該 軌道台間に移動自在に支持される摺動台と、前記軌道台 と摺動台との側面に設けたボール転走溝間に転動自在に 介装される直線案内用ボールと、前記摺動台に設けたボ ールねじ孔に螺合されるボールねじ軸と、前記ボールね じ孔内周とボールねじ軸外周に設けられたねじ溝間に転 動自在に介在されるボールねじ用ボールと、を具備した ボールねじ付直線運動案内装置において、前記摺動台を 第1摺動台と第2摺動台とに軸方向に二分割構成とする と共に各第1,第2摺動台のボールねじ孔内周に前記ボ ールねじ軸と同一ピッチのねじ溝を設け、第1,第2摺 動台のそれぞれのボールねじ孔のねじ溝間に位相差を設 けることによりボールねじ用ボールに軸方向の予圧を付 与してなることを特徴とする。 (57) [Abstract] [PROBLEM] To provide a linear motion guide device with a ball screw and a method for applying a preload to a ball screw, which is capable of applying an axial preload to a ball in a ball screw portion, thereby eliminating axial backlash. [Structure] A pair of raceways provided in parallel to each other, a slide stand movably supported between the raceways, and a ball rolling groove provided on a side surface of the raceway and the slide stand. A linear guide ball that is movably interposed, a ball screw shaft that is screwed into a ball screw hole provided in the slide table, and a screw groove provided on the inner circumference of the ball screw hole and the outer circumference of the ball screw shaft. In a linear motion guide device with a ball screw, comprising a ball screw ball interposed rotatably therebetween, the sliding base is axially divided into a first sliding base and a second sliding base. With the structure, screw grooves having the same pitch as the ball screw shaft are provided on the inner circumferences of the ball screw holes of the first and second sliding bases, and the screw grooves of the ball screw holes of the first and second sliding bases are provided. A special feature is that an axial preload is applied to the balls for ball screws by providing a phase difference between them. To collect.

Inventors

  • 👤 Hiroshi Teramachi
  • 👤 町 博 寺

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-02 13:14
CPC Classifications
F; F16; F16H; F16H25/00; F16H25/18; F16H25/20; F16H25/22; F16H25/2204; F16H25/2209; F16H2025/204

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

JPS5655753A Cited
US4443042A Cited
JPS60161051A Cited
JPS61144426A Cited
JPS63193637A Cited
JPS63318313A Cited
JPS6464747A Cited
JPH03149447A Cited

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