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Study on physical and technological effects of precise turning with self-propelled rotary tool
Precision Engineering ( IF 3.6 ) Pub Date : 2020-07-12 , DOI: 10.1016/j.precisioneng.2020.06.003
P. Nieslony , G.M. Krolczyk , R. Chudy , S. Wojciechowski , R.W. Maruda , P. Biłous , M. Lipowczyk , L. Stachowiak

This study is focused on some physical and technological aspects of a precise turning with Self-Propelled Rotary Tool (SPRT). As part of experiment, the cutting forces, on-line insert run-out and machined surface topography were investigated. Turning tests were carried in the range of variable feeds, depths of cut and cutting speeds for a hardened 41Cr4 steel with the use of a coated carbide round indexable inserts. The effect of cutting conditions on the tool rotation and the dynamics of cutting force signal were evaluated. In particular, changes of cutting forces vs. cutting lengths for different cutting parameters were analyzed in terms of the cutting insert rotation, and Power Spectral Density (PSD) analysis. Moreover, the original method based on cutting force oscillations was employed to estimate the on-line insert run-out. Ultimately, the analysis of a machined surface topography was conducted, considering the interactions between the process inputs and outputs. It was shown that application of high cutting speeds and feeds during SPRT turning can lead to the improvements in surface finish, as well as the stabilization of cutting force values.



中文翻译:

自走式旋转刀具精密车削的物理技术效果研究

这项研究的重点是使用自动旋转工具(SPRT)进行精确车削的一些物理和技术方面。作为实验的一部分,研究了切削力,在线刀片跳动和机加工表面形貌。使用涂层的硬质合金圆形可转位刀片在可变进给,切削深度和切削速度的范围内进行了车削测试,该淬火的41Cr4钢采用了涂层。评估了切削条件对刀具旋转和切削力信号动态的影响。尤其是,根据切削刀片旋转和功率谱密度(PSD)分析了不同切削参数下切削力与切削长度的变化关系。此外,采用基于切削力振荡的原始方法来估算在线刀片的跳动量。最终,考虑了过程输入和输出之间的相互作用,对机加工表面形貌进行了分析。结果表明,在SPRT车削过程中采用高切削速度和高进给量可以改善表面光洁度,并使切削力值稳定。

更新日期:2020-07-12
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