Method for online measuring linearity of raceway of ball linear guide pair

A linear guide pair and measurement method technology, applied in the direction of measuring devices, instruments, optical devices, etc., can solve the problems of high quality requirements for testers and poor accuracy of measurement results, and achieve the effect of accurate, fast and accurate measurement

Active Publication Date: 2018-07-27
闽台龙玛直线科技股份有限公司 +1
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the accuracy measurement of linear guide rails is mostly carried out by manual measurement or contact sensors, which requires high quality testers and poor measurement accuracy.

Method used

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  • Method for online measuring linearity of raceway of ball linear guide pair
  • Method for online measuring linearity of raceway of ball linear guide pair
  • Method for online measuring linearity of raceway of ball linear guide pair

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Embodiment Construction

[0037] Such as figure 1 As shown, the present invention provides an online method for measuring the straightness of the secondary raceway of a ball linear guide rail. The online measurement method includes the following steps:

[0038] 1) The laser displacement sensor 4 is installed on the bed of the CNC machine tool through a fixture, and the initial measurement position of the laser displacement sensor 4 is selected as point O 1 , where the fixture drives the measuring head of the laser displacement sensor 4 around the point O in a plane perpendicular to the axis of the raceway 1 Rotate at any angle;

[0039] 2) When grinding the raceway 3 of the linear guide 2, install the linear guide 2 on the workbench 1 of the CNC machine tool through magnetic adsorption, use the forming grinding wheel to grind the raceway 3, and wipe the raceway 3 with alcohol after grinding clean;

[0040] 3) Using the laser displacement sensor 4 and cooperating with the movement of the CNC machine ...

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Abstract

The invention discloses a method for online measuring the linearity of a raceway of a ball linear guide pair. The method includes the steps of measuring the distances between a position and three points on an arc of a raceway section at multiple angles through a laser displacement sensor, deducing space coordinate values of the circle center of the arc of the raceway section through a triangular function relation, measuring space coordinate values of the circle center of the section arc at different axial directions of the raceway multiple times, and fitting the measured circle center with a certain discreteness through a least square method to obtain the linearity of the raceway. By means of the method, the linearity of the raceway is rapidly and accurately measured, the measurement precision depends on the measurement precision of the applied laser displacement sensor, and the error of the measurement precision of the linearity of the raceway can be smaller than 0.1 micron by means of the high-precision laser displacement sensor. When detection is conducted by means of a high-precision transmission working table of a numerical control machine tool, measurement is more accurate.

Description

technical field [0001] The invention relates to the field of linear guide rail measurement, in particular to an on-line measurement method for the straightness of the secondary raceway of a ball linear guide rail. Background technique [0002] At present, the accuracy measurement of linear guide rails is mostly carried out by manual measurement or contact sensors, which requires high quality testers and poor measurement accuracy. Contents of the invention [0003] In order to solve the deficiencies in the prior art, the purpose of the present invention is to provide an accurate online measurement method for the straightness of the secondary raceway of the ball linear guide. [0004] To achieve the above object, the present invention adopts the following technical solutions: [0005] An on-line measurement method for the straightness of a ball linear guide pair raceway, the on-line measurement method comprising the following steps: [0006] 1) Install the laser displaceme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/27
CPCG01B11/27
Inventor 吴海勇曾凡沛赖镇和赵顺利
Owner 闽台龙玛直线科技股份有限公司
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