Rail wear accuracy test bench

Abstract

The invention discloses a guide rail abrasion precision test bed. The guide rail abrasion precision test bed comprises a support framework, a guide rail pair simulation module, a load applying module, a straightness measuring module and a friction measuring module, wherein the guide rail pair simulation module comprises guide rail specimen installing plates, a slide block specimen installing plate and a first spiral drive mechanism; the first spiral drive mechanism drives the guide rail specimen installing plates to reciprocate; the load applying module comprises a loading spring, a load regulating screw rod, a load regulating nut, a load measuring sensor, a load measuring sensor installing plate, a support guide rail, a support guide rail slide block, a front thrust plate and a rear thrust plate; the load applying module moves along with the guide rail specimen installing plates; the friction measuring module is composed of a tension and pressure sensor; one end of the tension and pressure sensor is fixed on the slide block specimen installing plate, and the other end of the tension and pressure sensor is fixed on a rolling ball screw rod nut. The guide rail abrasion precision test bed provided by the invention can accurately simulate the actual running working conditions of a guide rail pair, and also can obtain the guide rail pair precision corresponding to the abrasion state of the guide rail pair.

Description

technical field [0001] The invention belongs to the field of friction and wear tests of sliding guide rail pairs, in particular to a test bench for testing the precision decay of guide rail pairs in the wear process. Background technique [0002] Accuracy retention is a key performance index of high-precision machine tools. As the core component of the feed system of high-precision machine tools, the guide rail pair determines the feed accuracy and accuracy retention performance of the machine tool. The sliding guide rail pair is a commonly used support and feed component in the machine tool system, and friction and wear are the most important factors affecting the working accuracy of the sliding guide rail pair. Under laboratory conditions, it is of great significance to study the wear performance of sliding guide rail pairs under different material compositions, different operating parameters and different lubrication conditions and the accuracy attenuation law caused by w...

AI Technical Summary

Problems solved by technology

Due to the non-linearity when the crank slider mechanism converts rotary motion into linear reciprocating motion, this type of testing machine cannot accurately simulate the actual operating conditions of the guide rail pair.

Images