Research on Indication System and Comprehensive Evaluation Method of Accuracy Retentivity of Machine Tools

doi:10.3901/JME.2025.13.282

Abstract

Abstract: Accuracy retentivity is one of the key performance indexes of machine tools, which describes the ability of machine tools to maintain their original accuracy. The evaluation of accuracy retentivity is the theoretical basis for the accuracy retentivity improvement project of machine tools. Aiming at the existing evaluation methods of machine tool accuracy retentivity of the indication system is not sound, the lack of comprehensive evaluation methods and other issues, the meanings of inherent accuracy retentivity and service accuracy retentivity of machine tools are made clearer in this research. A static-dynamic indication system of accuracy retentivity including accuracy margin, accuracy degradation amount, accuracy degradation rate, accuracy retention degree and accuracy retention time is established. This system describes the machine tool's capacity to retain accuracy from a variety of angles, including degradation conditions, degradation processes, and degradation outcomes. A combined static/dynamic evaluation method for absolute comprehensive evaluation of accuracy retentivity is proposed. The evaluation steps include: discrete accuracy degradation data functionalization, dynamic comprehensive evaluation of the accuracy degradation process and static comprehensive evaluation of the accuracy retention capability. By combining cases, it confirms the efficacy of the given method and model.

Key words: machine tools, accuracy retentivity, comprehensive evaluation, indication system

CLC Number:

TG502

LIU Kuo, XING Jiapeng, WANG Yongqing, ZHAO Di, SONG Lei, LI Kai, LIU Haibo. Research on Indication System and Comprehensive Evaluation Method of Accuracy Retentivity of Machine Tools[J]. Journal of Mechanical Engineering, 2025, 61(13): 282-292.

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URL: http://www.cjmenet.com.cn/EN/10.3901/JME.2025.13.282

http://www.cjmenet.com.cn/EN/Y2025/V61/I13/282

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