Comprehensive accuracy and performance testing device of rolling linear guide pair

Abstract

The invention discloses a comprehensive accuracy and performance testing device of a rolling linear guide pair. A granite bed is provided with linear motor stators which are in bilateral symmetry; a linear motor rotor is arranged between the two linear motor stators; two linear motor guide rails which are in bilateral symmetry are arranged outside the two linear motor stators; an adapter plate is arranged on one side of the linear motor guide rail; a tested guide rail is arranged on the adapter plate; motor guide rail slide blocks are arranged on the two linear motor guide rails; a sliding table is fixedly connected with the linear motor rotor and the motor guide rail slide blocks; a noise testing table is arranged on the sliding table; the tested slide block is arranged on the tested guide rail; a comprehensive testing table is arranged on the tested slide block; and a laser displacement sensor, a pressure sensor, a vibration displacement sensor, an acceleration sensor and a temperature sensor are arranged on the comprehensive testing table. The comprehensive accuracy and performance testing device can be used for testing various accuracy and performance parameters of the guide rail pair at a high speed and is good in vibration reduction effect, high in geometric accuracy, stable in accuracy and long in service life.

Description

technical field [0001] The invention belongs to the field of guide rail testing, in particular to a rolling linear guide rail pair comprehensive precision and performance testing device. Background technique [0002] The rolling linear guide pair is mainly composed of guide rails, sliders and rolling elements, which play the role of carrying and guiding moving parts in mechanical transmission. Rolling linear guides have become one of the key basic components of precision numerical control equipment due to their high positioning accuracy, small friction, stable movement, which can improve the working efficiency of machine tools and machinery, and high movement accuracy. [0003] The comprehensive accuracy and performance of the rolling linear guide pair mainly include walking accuracy indicators such as vertical and horizontal walking parallelism, roll angle, yaw angle, and pitch angle, and characteristic indicators such as vibration, noise, temperature rise, and high-speed p...

AI Technical Summary

Problems solved by technology

The disadvantage of this patent is that: since the measured guide rail is installed on the base, and the autocollimator as the measurement reference is installed on the optical measurement platform, the deviation measured when the slider moves includes both The error of the guide rail pair also includes the manufacturing and installation errors of the base, so the test data is not accurate enough

The problems in this patent are as follows: first, when the gantry is pushed for testing, the height deviation between the two sliding guide rails will cause the skew of the cross bar, and the skew of the cross bar will cause the measurement data of the probe on it to be untrue; second , the 5 probes of the comprehensive accuracy detector cannot measure the pitch angle error of the guide rail pair

The disadvantage of this measurement method is that the friction force causes the speed of the slider to fluctuate, and the stepper motor has no feedback control, and cannot realize the uniform speed control of the slider, so the measured friction force is not accurate enough

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