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      • Research on Dynamic Characteristics of Hard Cutting System

        Yue Caixu,Fenghuize,Cai Chunbin,Zhang Haitao,Huang Cui 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.3

        Tool wear is an inevitable and continuously aggravated process in precision hard cutting. Interaction between tool wear and dynamic characteristics in cutting system makes the machining accuracy and quality of machined surface declining, which effects dynamic characteristics of cutting system deteriorated significantly. Based on this, cutter dynamic modal parameters of a specific cutting system are measured in this paper. Cutting force and change law of acceleration power spectrum are studied by experiments. Influence mechanism of tool wear on system frequency energy distribution was obtained. The cutting system dynamic characteristics are quantified by establishing simulation model. Root locus plot of non-uniform load distribution is obtained and the minimum stiffness ratio in the root locus plot is determined. The effect of tool flank wear on cutting system stability in quantitatively stable is researched.The results can provide a theoretical basis for the selection of reasonable selection of stable precision cutting conditions in different tool wear conditions.

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