R-test precision ball head detection device and calibration method thereof

Abstract

The invention discloses an R-test precision ball head detection device, which comprises a five-dimensional manual sliding table, an R-test ball head and a mounting seat, wherein the mounting seat is provided with three mounting surfaces for mounting sensors, and a reference surface A and a reference surface B for calibration, the mounting seat is fixedly mounted on the top surface of the five-dimensional manual sliding table, displacement sensors are fixedly mounted on the mounting surfaces of the mounting seat, the extension lines of the three displacement sensors are orthogonal to a point P,and the center of sphere of the R-test ball head is located at the point P. According to the invention, by arranging the mounting seat with the reference surface A and the reference surface B, afterthe sensor is mounted, the detection device can be calibrated, so that the positioning error when the R-test detection device is mounted and positioned on the workbench of the processing machine toolis reduced, the detection result of the volume error is accurate and reliable, and the direction vector of the axis of the R-test sensor can be directly obtained so as to simplify the conversion method of the subsequent volume error in each coordinate system and provide convenience for geometric error identification.

Description

technical field [0001] The invention relates to the technical field of detection devices for precision machining machine tools, in particular to an R-test precision ball head detection device and a calibration method thereof. Background technique [0002] Multi-axis linkage CNC machining machine tools are widely used in aviation, aerospace, automobiles, ships and other fields because of improving the machining accuracy, quality and efficiency of free-form surfaces in space. With the advancement of science and technology, various manufacturing industries have an increasing demand for parts processing and manufacturing accuracy, and higher requirements are also placed on the processing accuracy of processing machine tools. [0003] In view of the complexity of the structural accuracy analysis of the current machine tool and the urgent need to improve the precision design level of the processing machine tool, it is necessary to establish an accuracy analysis model and develop n...

AI Technical Summary

Problems solved by technology

Nowadays, the R-test precision ball head detection device is commonly used to detect and calibrate the processing machine tools. The R-test precision ball head detection device includes an adjustable slide table, R-test ball head and R-test ball head mounting seat , the mounting seat is composed of a solid circular column-shaped bracket. After placing the R-test ball head on the top of the mounting seat, the data is collected to perform error detection on the processing machine tool. However, the R-test precision ball head was not detected before the error detection of the processing machine tool. The device is calibrated, and there is a positioning error between the R-test precision ball head detection device and the processing machine tool. There will be certain errors in the subsequent detection and calibration of the processing machine tool, which will cause processing errors.

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