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A method of applying preload force of ball linear guide pair

A technology of linear guide pair and auxiliary preload force, which is applied in the direction of linear motion bearings, anti-centrifugal force rotating parts, shafts and bearings, etc., to achieve easy-to-achieve effects

Active Publication Date: 2020-10-27
浙江宇振科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the required total preload direction is inconsistent with the nominal contact angle direction, the above method of applying preload cannot meet the requirements

Method used

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  • A method of applying preload force of ball linear guide pair
  • A method of applying preload force of ball linear guide pair
  • A method of applying preload force of ball linear guide pair

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Embodiment Construction

[0048] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0049] The square equal load type ball linear guide pair is widely used because of its ability to bear the same load in all directions. Take a commonly used square equal load type ball linear guide pair as an example. The specific parameters are: nominal contact angle α 0 =45°, rolling body diameter d=6.35mm, number of loaded balls in a single row is n=12, radius of curvature r of raceway of slider and guide rail c = r r = 3.302 mm. The elastic modulus of the material of the slider and the ball is both 206Gpa, and the Poisson's ratio is 0.3. A certain ball automation equipment requires the ball linear guide pair to apply a preload force of 1200N laterally and a preload force of 3600N vertically.

[0050] A method for applying a preload of a ball linear guide pair, comprising the following steps:

[0051] 1. Determine the structural parame...

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Abstract

The invention discloses a method for applying pretightening force of a ball linear guide rail pair. The method includes the following steps that step 1, the structural parameters of the ball linear guide rail pair are determined; step 2, the relationship between the pretightening force and the pretightening amount of a single ball of the ball linear guide rail pair is established; step 3, the relationship between the pretightening amount of the single ball of the ball linear guide rail pair and the center of raceway curvature is established; step 4, the relationship between the pretightening force of the ball linear guide rail pair and the center of the raceway curvature is established; and step 5, the pretightening force of the ball linear guide rail pair is applied. The application of specific magnitude and specific direction of the pretightening force can be realized, and the requirements of magnitude and direction of the total pretightening force of the ball linear guide rail pairof automatic equipment are met; and the realization of the prior art has requirements for size of all balls, the method only requires the curvature center position of a sliding block, and the realization is easier.

Description

technical field [0001] The invention belongs to the technical field of mechanical guide devices, in particular to a method for applying pretightening force to a ball linear guide pair. Background technique [0002] With the advantages of strong bearing capacity, low friction loss and high motion sensitivity, the ball linear guide pair is widely used in various automation equipment, especially high-end CNC machine tools. The preload force is the key factor that directly affects the comprehensive performance of the ball linear guide, and will have an impact on the stiffness and life of the ball linear guide. When the pre-tightening force is too small, the rigidity of the guide rail pair will be insufficient. When the pre-tightening force is too large, the wear between the ball and the slider and the guide rail will be aggravated, thereby reducing the service life. [0003] At present, the method of applying the pretightening force of the ball linear guide pair is to select ba...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C29/04
CPCF16C29/04F16C2229/00F16C2240/12F16C2240/14F16C2240/34F16C2240/40
Inventor 翁泽宇陈健徐特奇王泳丁红钢游红武
Owner 浙江宇振科技有限公司