Traceability method for multi-axis linkage error of five-axis machine tool based on rtcp error feature recognition
A multi-axis linkage and feature recognition technology, applied in the field of CNC machine tools, can solve the problem of not being able to give the machining accuracy of machine tools
Active Publication Date: 2020-09-15
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Therefore, the current international standards and testing instrument manufacturers can only provide testing instruments and testing methods for testing the performance of five-axis linkage. Adjustment of machine tool factors to improve machine tool machining accuracy
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[0041] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0042] Such as figure 1 As shown, the five-axis machine tool multi-axis linkage error tracing method based on RTCP detection feature recognition provided by the present invention includes the following steps:
[0043] S1. According to the structure type of the five-axis machine tool, analyze and determine the linkage error category of the machine tool, and use the machine tool RTCP technology to detect the multi-axis linkage error of the five-axis machine tool under each linkage error category;
[0044] In this embodiment, a five-axis linkage machine tool to be tested for linkage performance is a domestic five-axis CNC milling machine, which is divided into multi-axis linkage error categories according to the degree of influence of the movement axis error on the machine tool linkage error. In this embodiment, the position ring of each movement axis ...
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The invention discloses a five-axis machine tool multi-axis linkage error traceability method based on RTCP detection error feature recognition, using the five-axis machine tool RTCP function to measure the error presentation form of the five-axis machine tool linkage—tool tip point error, and construct an error library , and then input the error map into the error and machine tool linkage error category mapping relationship library, use the feature recognition technology to trace the source of the machine tool linkage error type, and accurately quantify and trace the linkage error value based on the trajectory similarity analysis. The invention has the advantage of not only being able to evaluate the linkage performance of the machine tool, but also clarifying the influencing factors affecting the multi-axis linkage performance of the machine tool when the multi-axis linkage performance of the machine tool does not meet the requirements, so as to provide an optimization plan for the machine tool, and quantitatively improve the performance of the machine tool. The factors that affect the multi-axis linkage performance of the machine tool are adjusted to meet the high-precision requirements of the machine tool.
Description
technical field [0001] The invention belongs to the technical field of numerical control machine tools, and in particular relates to a multi-axis linkage error tracing method for five-axis machine tools based on RTCP error feature recognition. Background technique [0002] Five-axis linkage CNC machine tools are mainly used in the processing and manufacturing of complex surface parts such as molds and aerospace. With the continuous improvement of the precision and physical performance requirements of parts, higher requirements are put forward for the multi-axis linkage precision of CNC machine tools. The error factors of CNC machine tools can be divided into two categories: static factors and dynamic factors. Among them, the static accuracy is detected under the condition of no cutting load and the machine tool does not move or the movement speed is very low. Due to the improvement of high-end CNC machine tool manufacturing equipment technology , the static accuracy can onl...
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IPC IPC(8): G05B19/404
CPCG05B19/404G05B2219/39044
Inventor 姜忠丁杰雄张靖丁启程李晴朝杜丽王伟宋智勇李杰
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA