Rolling linear guide rail pair slider profile accuracy measurement method

Abstract

The invention discloses a rolling linear guide rail pair slider profile accuracy measurement method and belongs to the rolling linear guide rail slider profile accuracy detection filed. Technical blanks still exist in the measurement of inner rolling paths of sliders; the span of the slider of a rolling linear guide rail pair is too small, general high-precision sensors cannot be arranged in the span to carry out measurement, while, the measurement method is provided by the invention is to solve the above problem. According to the measurement method of the invention, sensors are arranged at two ends of a slider, so that tilt measurement is carried out at the outside of the span of the slider; the flatness of the reference planes of the slider and verticality between the reference planes of the slider are measured by two pairs of laser displacement sensors; the contour of the inner rolling path of the slider is scanned, so that a semi-elliptical contour can be obtained, and ellipse fitting is carried out through adopting the least square method; the location and radius length of the inner rolling path can be converted into the centroid position of a fitted ellipse and the short axis length of the ellipse respectively through mathematical analysis; and the locations of the large surface and side surface of the inner rolling path of the slider, and the parallelism of the inner rolling path of the slider relative to the slider can be measured. The rolling linear guide rail pair slider profile accuracy measurement method is a complete method.

Description

technical field [0001] The invention belongs to the field of detection of auxiliary sliders of rolling linear guide rails, in particular to a method for measuring the surface accuracy of auxiliary sliders of rolling linear guide rails. Background technique [0002] As an important component of the rolling linear guideway pair, the slider has an important impact on the guideway pair, and the surface error of the inner raceway of the slider directly affects the friction and wear, precision maintenance, life, rigidity and vibration noise of the guideway pair. Starting from improving the product performance of the domestic rolling linear guide pair, it is necessary to test the precision of the inner raceway profile of the rolling linear guide pair. [0003] The position and radius measurement of the inner raceway of the slider of the rolling linear guide pair mainly includes two types of projector visual observation measurement and automatic measurement. Projection detection, t...

AI Technical Summary

Problems solved by technology

Projection detection, this method is low in cost, but it cannot measure the data of the inner raceway in real time. It can only be enlarged and compared with the drawing of the set size at the same multiple; while the automatic detection mainly uses a three-coordinate measuring instrument, three-coordinate measurement The instrument has high measurement accuracy, but is expensive

[0004] Because the span of the auxiliary slider of the rolling linear guide is too small and the size of the high-precision sensor is too large, it is difficult to directly extract the information of the inner raceway. At present, the online detection of the surface accuracy of the auxiliary slider of the rolling linear guide is still blank

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