Research on Availability Analysis Method of CNC Machine Tools Based on Meta-action

doi:10.3969/j.issn.1004-132X.2023.15.009

Abstract

Abstract: In order to accurately analyze the availability of CNC machine tools， a analyzing method for the availability of CNC machine tools was proposed based on meta-action theory. Firstly， the “function-motion-action” structural decomposition tree was used to decompose the mechanical system， and the basic meta-action and meta-action chain were obtained. And a steady-state availability model was established based on the faults and maintenance data of the constituent components of the meta-action unit. Then， a steady-state availability analysis model for the meta-action chain was established based on Markov process. Finally， a steady-state availability model of the whole machine system was established based on the formation processes of the whole machine system function. Taking the availability analysis of CNC grinding machines as an example， and the proposed method was explained.

Key words: availability, meta-action, CNC machine tool, Markov process

摘要： 为了准确分析数控机床可用性，结合元动作理论，提出了基于元动作的数控机床可用性分析方法。首先通过“功能-运动-动作”结构化分解方法对数控机床进行分解，得到元动作链和元动作，以元动作为最小分析单元，以组成单元零件的故障和维修数据为基础，建立单元稳态可用度模型；然后，结合马尔可夫过程建立元动作链的稳态可用度分析模型；最后，根据整机功能形成过程，建立了整机系统稳态可用度模型。以数控磨床的可用度分析为例，对所提方法进行了说明。

关键词: 可用性, 元动作, 数控机床, 马尔可夫过程

CLC Number:

TG659

LI Jian, MU Zongyi, DU Yanbin, HUANG Guangquan, RAN Yan. Research on Availability Analysis Method of CNC Machine Tools Based on Meta-action[J]. China Mechanical Engineering, 2023, 34(15): 1848-1855.

李健, 慕宗燚, 杜彦斌, 黄广全, 冉琰. 基于元动作的数控机床可用性分析方法研究[J]. 中国机械工程, 2023, 34(15): 1848-1855.

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