A Method of Detecting the Precision of CNC Machine Tool by Relying on Special Tooling

Abstract

The invention provides a method for detecting precision of numerical control machine tool by special tool so as to solve the problem that when the numerical control machine tool runs for a long time,the precision is reduced. According to the method, the special tool is designed, wherein the special tool is composed of a cylinder and a cube located on the cylinder, a groove used for allowing a screw to be installed is formed in the lower end of the cylinder, an oblique angle with any angle is chamfered in one side of the top of the cube, and a concentric circular hole is formed in each of anytwo corresponding surfaces of the cube. All the parameters of the special tool are detected in a three-coordinate mode and then are compensated into actual machining so as to ensure the precision.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and relates to a method for detecting the precision of a numerically controlled machine tool by means of special tooling. Background technique [0002] After long-term operation of CNC machine tools, the accuracy will decrease and the center of rotation will shift. The reduction of positioning accuracy and repeat positioning accuracy of CNC machine tools will affect the linear dimension accuracy processing of CNC machine tools, and the reduction of rotation accuracy will affect the linear angle dimension accuracy processing of CNC machine tools. The loss of geometric precision of CNC machine tools is likely to cause the tolerance of shape and position and dimensional accuracy of the finishing parts to be out of tolerance. Once the accuracy of CNC machine tools decreases, laser interferometers are generally used to re-test and compensate the accuracy of CNC machine tools, which will ...

AI Technical Summary

Problems solved by technology

[0002] After long-term operation of CNC machine tools, the accuracy will decrease and the center of rotation will shift. The reduction of positioning accuracy and repeat positioning accuracy of CNC machine tools will affect the linear dimension accuracy processing of CNC machine tools, and the reduction of rotation accuracy will affect the linear angle dimension accuracy processing of CNC machine tools. The loss of geometric precision of CNC machine tools can easily lead to out-of-tolerance tolerances and dimensional precision of parts finishing.

Once the accuracy of CNC machine tools decreases, laser interferometers are generally used to re-test and compensate the accuracy of CNC machine tools, which will consume a lot of manpower, material resources, and financial resources. , these jobs are unacceptable

In the past, after the accuracy level of such CNC machine tools decreased, most of them could only perform rough machining and semi-finish machining, and could not complete the machining of high-precision parts, which not only wasted a lot of resources, but also was not conducive to the improvement of manufacturers' processing capabilities.

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