Heavy-load rolling linear guide-way pair capable of homogenizing errors

Abstract

The invention discloses a heavy-load rolling linear guide-way pair capable of homogenizing errors. The heavy-load rolling linear guide-way pair comprises a sliding block and a guide rail. Rolling elements are arranged between four track contact surfaces of the guide rail and the sliding block. The rolling elements move in the sliding direction of the sliding block. Smooth generatrices are arranged at the two sides of each rolling element. Each generatrix comprises a stressed arc located in the middle and corrected arcs corrected at the ends. The inner concave surface of a sliding block track and the generatrices of the rolling elements form inner contact points, and the outer convex surface of a guide rail track and the generatrices of the rolling elements form outer contact points. The inner contact points and the outer contact points are in o-shaped distribution by using the geometrical symmetry center of the guide rail track as the center of a circle. When the sliding block suffers from unbalance loading or the guide rail deviates on the whole, the contact points formed by inner contact and outer contact can deviate, and therefore the influence on rolling element contact areas by unbalance loading or overall skewing of the tracks can be offset, the effect that the contact stress of inner contact and outer contact does not exceed a limit value is guaranteed, and the surface of the guide rail track cannot be damaged.

Description

technical field [0001] The invention relates to a heavy-duty rolling linear guide rail pair capable of homogenizing installation and manufacturing errors. Background technique [0002] The rolling body of the roller linear guide is placed in the rectangular space formed by the slider track and the guide rail track. The rolling body rotates around its own central axis with the movement of the slider. The linear speed of the rotation is approximately equal to the linear speed of the slider. There are often multiple rolling elements rolling in the same direction at the same time, which can ensure that the slider can move along the guide rail while bearing the load transmitted by the slider; errors will occur during product manufacturing and installation, and the rolling elements (rollers) are installed between the track surfaces. When the contact area is deformed, the force on the rollers will be uneven, and it is easy to exceed the stress limit, resulting in a serious decrease...

AI Technical Summary

Problems solved by technology

[0002] The rolling body of the roller linear guide is placed in the rectangular space formed by the slider track and the guide rail track. The rolling body rotates around its own central axis with the movement of the slider. The linear speed of the rotation is approximately equal to the linear speed of the slider. There are often multiple rolling elements rolling in the same direction at the same time, which can ensure that the slider can move along the guide rail while bearing the load transmitted by the slider; errors will occur during product manufacturing and installation, and the rolling elements (rollers) are installed between the track surfaces. When the contact area is deformed, the force on the rollers will be uneven, and it is easy to exceed the stress limit, resulting in a serious decrease in the fatigue life of the track surface; the uneven force on the rolling elements will cause changes in the motion posture, which will affect the smooth movement of the slider Sexuality, and produce contact force on other components, accelerate the damage speed of components, damage the performance of the entire product, and reduce the service life of the product

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