An Experimental Bench for Testing the Static Stiffness of a Rolling Linear Guideway

Abstract

The invention discloses an experiment table for detecting static rigidity of a rolling linear guide rail pair. The experiment table comprises a guide rail pair installation plate, left and right support seats, and a test guide rail, wherein the guide rail pair installation plate and the left and right support seats are installed on a T-shaped groove platform, the test guide rail is installed on the guide rail pair installation plate, a pressing plate is fixed on a sliding block of the test guide rail to avoid crushing the sliding block during direct loading, a force application beam stretches across and is fixed on the left and right support seats and is loaded through a loading bolt, a loading force is controlled and measured by a weighing sensor, and the deformation is measured by an inductance measuring head. Three screw holes are formed in the force application beam and the left support seat and can apply a vertical load, a rolling moment and a horizontal load respectively, and the sliding block and the pressing plate of the mobile test guide rail can apply a capsizing moment and a rotation moment. By means of the experiment table, detection of static rigidity of the rolling linear guide rail pair under five kinds of loading actions is achieved, meanwhile, practical installation working conditions of the guide rail are met, and the loading manner is simple and reliable.

Description

technical field [0001] The invention relates to a device for detecting the performance of a rolling linear guide rail pair, in particular to a device for detecting the static stiffness of a rolling linear guide rail pair. Background technique [0002] CNC machine tools are the "workhorses" of the high-end equipment manufacturing industry. The possession and development level of CNC machine tools in a country in the world today is an important guarantee for its industrial modernization and comprehensive national strength. Among the various performances of CNC machine tools, static stiffness is an important technical index, which refers to the ability of the machine tool to resist deformation when it is under load. The static deformation of the machine tool will not only cause a certain processing error, but also affect the vibration resistance, wear, heat and working life of the machine tool. Therefore, it is of practical significance for machine tool design to test its sta...

AI Technical Summary

Problems solved by technology

The existing static stiffness calculation formulas set some assumptions, so there may be a large error between the calculation results and the actual ones, and the static stiffness testing machine developed by Fang Jian can only apply vertical loads to the guide rail pair, so the obtained static stiffness Stiffness is also static stiffness under vertical load

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