Comprehensive measurement device for linear guide rail friction and manufacturing and installation errors

Abstract

The invention discloses a device for comprehensively measuring linear guide rail friction force and manufacturing and mounting errors, and belongs the technical fields of measurement. The device for comprehensively measuring the linear guide rail friction force and the manufacturing and mounting errors mainly comprises a linear feeding system, a guide rail and sliding block friction force measuring device, a guide rail linearity error measuring device and a guide rail mounting parallelism error measuring device. The guide rail and sliding block friction force measuring device drives a sliding block to move through a servo motor to achieve measurement of the dynamic friction force of the sliding block at different running speed and under different loading effects, and the value of the friction force can be obtained by utilizing a pull pressure sensor. The guide rail mounting parallelism error measuring device converts parallelism errors among guide rails into internal stress of a connecting rod, and the values of the parallelism errors can be obtained through measurement of the pull pressure sensor. A standard straight gauge block is utilized by the guide rail linearity error measuring device as a reference of measurement, the linearity error of the guide rails is converted into changes of compression amount of a spring, a least square method is utilized for processing, measurement is convenient, and measurement accuracy is high.

Description

technical field [0001] The invention belongs to the technical field of measurement, and in particular relates to a comprehensive measurement device for linear guide rail friction and manufacturing and installation errors. Background technique [0002] Linear guide rails have been widely used in the linear feed system of CNC machine tools. They play the role of supporting the motion platform and guiding. They are the relative position reference and motion reference of the linear feed system. big impact. With the development of processing and manufacturing in the direction of high efficiency, high precision and high speed, it is necessary for linear guides to have the advantages of high guiding precision, high operating sensitivity, small friction, and good precision retention. Since the linear guide rail has a great influence on the linear feed system, because it has excellent performance in the process of manufacturing and use, it is first necessary to achieve high-precisio...

AI Technical Summary

Problems solved by technology

This measurement method is simple to operate, but the measurement results are affected by the flatness of the guide rail, and the measurement results cannot be recorded and saved in real time. In addition, the moving speed of the probe of the dial indicator also has a certain impact on the measurement results, and the measurement sensitivity is not high.

[0006] Therefore, at present, in the measurement of the friction force of the linear guide rail and the manufacturing and installation error, there is still a lack of comprehensive measuring devices that are easy to operate, high in measurement accuracy, high in sensitivity, and can record measurement data in real time.

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