Tool wear estimation and life prognostics in milling: Model extension and generalization

刀具磨损 磨料 预言 粘着磨损 机械加工 一般化 材料科学 计算机科学 机械工程 工程类 可靠性工程 数学 数学分析
作者
Yu Zhang,Kunpeng Zhu,Xianyin Duan,Si Li
出处
期刊:Mechanical Systems and Signal Processing [Elsevier BV]
卷期号:155: 107617-107617 被引量:66
标识
DOI:10.1016/j.ymssp.2021.107617
摘要

Tool wear condition is a key factor in milling which directly affects machining precision and part quality. It is essential to seek a convenient method to model and predict tool states. A generic wear model with adjustable coefficients is proposed and validated in this study. Considering the inner mechanisms of different wear stages, the entire tool life is split into three mainly wear zones by critical time, which correspond to three main types of wear: running-in wear, adhesive wear, and three-body abrasive wear. The wear model is validated based on the experimental data, compared with other celebrated wear models, and then further improved to enhance the adaptability and generalization. It is shown that the generalized wear model can discriminate tool wear ranges accurately. The determination coefficient of the wear model is more than 98% with the experimental data. Based on the proposed model, an approach for tool life prognosing and tool wear condition evaluating is proposed. The predictive real-time monitoring data of tool life and wear can be obtained timely with a genetic algorithm.
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