Predictive analysis of the precision remaining useful life of CNC machine tools based on meta-action unit

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-02-16 DOI:10.1177/09544054241229488

Junfa Li, Minghui Gu, Yulong Li, Shutao Wen, Genbao Zhang

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引用次数: 0

Abstract

Taking into consideration the dynamic characteristics of motion error propagation in CNC machine tools, in order to enhance the accuracy of PRUL (precision remaining useful life) prediction analysis, this paper presents a precision degradation modeling approach based on MAU (meta-action unit) for CNC machine tools. Firstly, from the perspective of motion, the CNC machine tool is divided into the smallest unit by the decomposition of FMA (Function-Motion-Action). Secondly, the MBS (multi-body systems) theory is used to topologically describe the motion relationship between the MAU, and the spinor theory is used to model the motion error. Thirdly, considering the influence of multiple error sources on the PRUL of the CNC machine tool MAU, the motion transmission ratio is used to synthesize multiple error sources, and combined with the constructed error model, the precision degradation model of MAU is constructed, and its PRUL is accurately predicted. Finally, the CNC turntable is selected as the experimental subject to compare the proposed method with commonly used methods in terms of rationality, applicability, and simplicity, and the results verify the applicability and correctness of the method proposed in this paper.

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基于元动作单元的数控机床精密剩余使用寿命预测分析

考虑到数控机床运动误差传播的动态特性，为了提高 PRUL（精度剩余使用寿命）预测分析的精度，本文提出了一种基于 MAU（元动作单元）的数控机床精度退化建模方法。首先，从运动的角度，通过 FMA（功能-运动-动作）分解将数控机床划分为最小单元。其次，利用 MBS（多体系统）理论拓扑描述 MAU 之间的运动关系，并利用旋量理论建立运动误差模型。再次，考虑到多个误差源对数控机床 MAU 的 PRUL 的影响，利用运动传递比合成多个误差源，并结合构建的误差模型，构建 MAU 的精度退化模型，准确预测其 PRUL。最后，选择数控转台作为实验对象，从合理性、适用性和简便性等方面将本文提出的方法与常用方法进行比较，结果验证了本文提出的方法的适用性和正确性。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.