Pre-tightening rolling linear guide rail with reduced wear

By setting an elastic connection structure on the side of the slider, the fluctuation of preload is controlled, which solves the problem of accelerated wear of preloaded rolling linear guides under temperature changes and mechanical errors, and realizes stable operation and improved accuracy of the guide rail.

CN116733845BActive Publication Date: 2026-06-26ZHEJIANG YAWEI PRECISION MASCH TOOL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG YAWEI PRECISION MASCH TOOL CO LTD
Filing Date
2023-07-06
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing preloaded rolling linear guides suffer from large variations in preload due to temperature changes and mechanical errors, leading to accelerated wear and unstable operation.

Method used

By setting an elastic structure on the side of the slider, the elastic connection structure controls the preset preload rolling force fluctuation range. The elastic connection structure controls the preload fluctuation within the preload fluctuation range, reducing guide rail wear and improving the smoothness of guide rail movement. By adopting the manufacturing and assembly method of preloaded guide rail, the roller, guide rail and slider raceway surfaces are made to fit together, controlling the change in preload force to reduce guide rail wear and at the same time make the guide rail run stably.

Benefits of technology

It achieves effective control of preload fluctuation under the influence of temperature changes and mechanical errors, reduces guide rail wear, and improves the operational stability and accuracy of the guide rail.

✦ Generated by Eureka AI based on patent content.

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    Figure CN116733845B_ABST
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Abstract

The application discloses a pre-tightening rolling linear guide rail capable of reducing abrasion, which comprises a sliding block, a sliding block panel on the sliding block, an assembling surface on the sliding block panel, an active guide rail plate assembled on the assembling surface or directly serving as the active guide rail plate, two side edges, rolling track surfaces on the side edges, a guide rail, rolling track surfaces on the guide rail corresponding to the rolling track surfaces on the side edges of the sliding block, and a roller space formed by the rolling track surfaces. The pre-tightening force and fluctuation range are set, the deformation value of an elastic deformation element when the pre-tightening force reaches the pre-tightening force is increased, the pre-tightening force fluctuation caused by mechanical errors and uneven temperature is controlled within the set range, the abrasion of the guide rail element is reduced, the stability of the guide rail movement is improved, a manufacturing and assembling method of the pre-tightening guide rail is provided, and the rolling track surfaces of the roller, the guide rail and the sliding block are matched.
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