Test device and detection method for detecting comprehensive performance degradation of rolling linear guideway pair

Abstract

The invention provides a test device and detection method for detecting comprehensive performance degradation of a rolling linear guideway pair, and belongs to the technical field of precise numerical control manufacturing. A three-direction force sensor is utilized in the design of the sliding block and guideway loading operation test device; the test device adopts a cylinder to carry out loading on the vertical direction and side direction of the rolling linear guideway pair; and the test device is driven to move through a numerical control machine tool spindle. A sliding block is connected with the sensor and the spindle through specially-designed connecting devices respectively; the numerical control system is utilized to regularly drive the sliding block to reciprocate linearly; and theoretically, the connection mode can adopt the rigid connection mode, and however, considering a workbench of the numerical control system has a certain parallel misalignment and angle error, steel springs having appropriate elastic coefficients are adopted as buffer elements, which are arranged in the axial direction and side direction of the sliding block respectively. The sliding block can be loaded through descending or side bias amount of the spindle to ensure that loading of the spindle to the sliding block is more stable and has no destructive effect.

Description

technical field [0001] The invention relates to a test device and a detection method for detecting the degradation of comprehensive performance of a rolling linear guide rail pair, and belongs to the technical field of precision numerical control manufacturing. Background technique [0002] Compared with foreign guide rails, the domestically developed and produced machine tool guide rails are at a disadvantage in terms of precision, wear-resistant shape, rigidity and other comprehensive performance. Domestic guide rails generally increase the diameter of rolling elements or other methods of increasing preload to increase the stiffness of the guide rail pair and prolong the loss of accuracy time. However, there are many factors that affect the performance of linear guides. It is still uncertain whether increasing the preload to increase the stiffness and prolonging the accuracy retention time can improve the overall performance. The degradation law of the preload force and th...

AI Technical Summary

Problems solved by technology

Domestic guide rails generally increase the diameter of the rolling body or other methods of increasing the preload to increase the stiffness of the guide rail pair and prolong the accuracy loss time.

However, there are many factors that affect the performance of linear guides. It is not certain whether the overall performance can be improved by simply increasing the preload to increase the stiffness and prolong the accuracy retention time. The degradation law of the preload force and the law of stiffness degradation are still in the stage of continuous research.

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