Cutting force models for Fe–Al-based coating processed by a compound NC machine tool
Cutting force models for Fe–Al-based coating processed by a compound NC machine tool
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DOI：
10.1007/s00170-015-6817-8
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发表时间：
2015-02
期刊：
影响因子：
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通讯作者：
Yewang Sun;Zhijing Zhang;Jiaying Zhang;Xin Jin;Binshi Xu;G. Zhao
中科院分区：
文献类型：
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作者：
Yewang Sun;Zhijing Zhang;Jiaying Zhang;Xin Jin;Binshi Xu;G. Zhao
电弧喷涂Fe-Al基涂层切削过程是一个主轴-刀具-工件的振动系统，取决于机床的动态性能、刀具振动、涂层表面粗糙度和切削深度。为了研究切削力，本文阐述了涂层切削的基本机理，并在避免分析机床本身固有振动参数的基础上，提出了涂层切削过程中的两个切削步骤和切削力模型。在第一切削步骤中，由于粗糙表面的强迫振动，存在瞬态切削力;第二切削步骤具有基于第一切削表面和非均匀区域的降低的硬度的稳定加工特征。根据各切削步骤的不同特点，建立了包含切削参数、刀具振动和第一步切削深度影响的动态切削计算模型。稳定切削模型是基于切削速度、切削进给量和切削深度三个切削参数建立的。压电式力和加速度传感器用于获得准确的实验数据。然后，响应面法（RSM）和多项式回归的最小二乘估计（PLSEPR）的原则，分析得到的切削数据。结果表明，所建立的切削力计算模型适用于涂层切削。
The arc-spraying Fe–Al-based coating cutting process is a spindle-tool-workpiece vibration system dependent upon the machine tool's dynamic performance, cutting tool vibration, the coarse coating surface and its thin cutting depth. To investigate the cutting force, this research indicates the coating cutting fundamental mechanics; furthermore, it represents two cutting steps and cutting force models in the machining process avoiding an analysis of the natural vibration parameters of the machine tool itself. In the first cutting step, there is a transient cutting force due to forced vibration of the rough surface; the second cutting step has a steady machining feature based on the first cutting surface and the reduced hardness of the inhomogeneous region. According to the different characteristics of each cutting step, this research presents dynamic cutting calculation models including cutting parameters, tool vibration and cutting depth effects in the first cutting step. A steady cutting model is based on three cutting parameters including cutting velocity, cutting feed and cutting depth. Piezoelectric force and acceleration sensors were used to obtain accurate experimental data. Then, response surface methodology (RSM) and the principle of least squares estimation of polynomial regression (PLSEPR) were applied to analyse the resultant cutting data. The results showed that cutting force calculation models were suitable for the coating machining.