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REVO measuring head A-axis zero error calibration method

A technology of zero position error and calibration method, which is applied in the direction of measuring devices and instruments, can solve problems such as the impact of calibration accuracy, and achieve the effects of easy operation and realization, simple and easy method, and avoiding impact

Active Publication Date: 2019-01-22
TAIYUAN UNIV OF TECH
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Problems solved by technology

Mr. Zhang Guoxiong in the paper "A study on machinecalibration techniques" (Li X, Zhang G, Liu S, et al. A study on machinecalibration techniques[J]. CIRP Annals - Manufacturing Technology, 2013, 62(1):499- 502.) proposed a calibration method, but in the proposed calibration method, the three motion axes of the measuring machine are all involved in the movement, and the errors of the three motion axes of the measuring machine will have a certain impact on the calibration accuracy of the calibrated parameters. Impact

Method used

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  • REVO measuring head A-axis zero error calibration method

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] like figure 1 , figure 2 As shown, a REVO probe A-axis zero error calibration method of the present invention is used in the REVO five-axis measurement system, and the tools used include: a flat plate 8 and a standard ball 6 . Plate 8 is a 00-grade granite plate, and the flatness of the working surface is 2.1 μm. The material of the standard ball 6 is ceramics, and the diameter D is 44.9983mm. The specific steps of the method are as follows:

[0026] S1. Standard ball 6 is fixed on the flat plate 8 that is placed horizontally by club 7;

[0027] S2. Turn the probe 4 to the vertical direction, move the measuring machine spindle X to detect a point on the equator of the standard ball 6, and record the detection point x to and z to the coordinate value ( x 1 , z 1 ), move the measuring machine spindle X and spindle Z, so that the coordinate values ​​of t...

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Abstract

The invention relates to an REVO measuring head A-axis zero error calibration method, belongs to the technical field of precision test and apparatuses, and provides an REVO measuring head A-axis zeroerror calibration method, which can be used in a non-orthogonal type three-coordinate measuring machine. The technical scheme is as follows: the method comprises the steps of: fixing a standard ball on the horizontally placed plate; adjusting the position of a probe corresponding to the standard ball, so that the probe is positioned at the position, where is 2 mm from the top of the standard ball;adjusting the A-axis angle and moving the Z axis of the measuring machine, so that the probe can detect the equator position of the standard ball; keeping the three main axes of the measuring machinestationary, detecting two symmetrical points of the standard ball, and recording the A-axis angle value of the detection point; and, calculating the A-axis angle difference value of two detection points, and repeating the calibration process till calibration precision requirements are satisfied. When the three main axes of the measuring machine are stationary, high-precision calibration of the A-axis zero error is realized; and thus, the method can be used for measurement.

Description

technical field [0001] The invention relates to a method for calibrating the A-axis zero position error of a REVO measuring head, which belongs to the technical field of precision testing and instruments. Background technique [0002] The REVO five-axis measurement system with five-axis measurement capability launched by the British Renishaw company represents the most advanced contact coordinate measurement technology today. Due to its high efficiency and high precision measurement characteristics, it has been widely used in automotive and aerospace fields. Wide range of applications. [0003] The REVO five-axis measurement system is equipped with a special probe structure and error parameter calibration program. By installing a standard ball on the workbench of the three-coordinate measuring machine, and then executing the equipped special calibration program, the calibration of the probe structure and error parameters can be realized. High precision calibration. However...

Claims

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Application Information

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IPC IPC(8): G01B21/00
CPCG01B21/00
Inventor 张海涛王璇郭健乔铁柱杨毅
Owner TAIYUAN UNIV OF TECH
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