The Ti-6Al-4V alloy is known as materials with high hardness and good mechanical properties. However, the machining process of this material faces many difficulties due to unfavorable machining conditions. When the machining parameters are not selected in accordance with the Ti-6Al-4V alloy, the surface quality of workpieces does not meet technical requirements. Therefore, the appropriate machining parameters are needed to upgrade the surface roughness of workpieces in high-speed machining (HSM) conditions. The main cutting forces Py and Pz, and surface roughness Rz during turning of Ti-6Al-4V alloy in HSM were investigated and evaluated in this study. The response surface method (RSM) was used to conduct experiments and establish the models of Rz, Py, and Pz under various cutting conditions of feed rate (S), tool nose radius (R), and approach angle (φ). As a result, the S value has the largest impact on the Pz. Moreover, the machining parameters such as S, R, and φ have a great influence on the Py. The magnitude of Rz is mainly affected by R value. Based on the optimal parameters, the average value of the force Pz has decreased from 238N to 169N, corresponding reduction of about 29%. The value of the force Py has reduced from 184N to 118N, corresponding reduction of about 36%. In addition, the surface roughness of the workpiece has been improved significantly from Rz of 5.6μm to 2.7μm under optimal parameters condition. The surface roughness of the workpiece after processing in high speed machining was reduced of 52% compared with cutting under non-optimal parameters condition. The best surface quality and minimum cutting force could be achieved under optimal processing parameters in high speed cutting method.

中文翻译：

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生物医学应用钛合金高速加工的试验研究与优化

Ti-6Al-4V合金被称为具有高硬度和良好机械性能的材料。然而，由于不利的加工条件，这种材料的加工过程面临许多困难。未按照Ti-6Al-4V合金选择加工参数时，工件的表面质量不符合技术要求。因此，需要适当的加工参数来提升高速加工（HSM）条件下工件的表面粗糙度。主要切削力派和铂, 和表面粗糙度电阻率在这项研究中，研究和评估了在高速切削中车削 Ti-6Al-4V 合金的过程。采用响应面法（RSM）进行实验并建立模型电阻率,派， 和铂在各种进给率切削条件下（小号), 刀尖半径 (R) 和接近角 (φ）。结果，小号价值影响最大铂. 此外，加工参数如小号,R， 和φ有很大的影响派. 的幅度电阻率主要受R价值。基于最优参数，力的平均值铂已从 238 减少N 至 169N，相应减少约29%。力量的价值派已从 184 减少N 至 118N，相应减少约36%。此外，工件的表面粗糙度从电阻率5.6μ米至 2.7μm 在最佳参数条件下。与非最优参数条件下的切削相比，高速加工加工后的工件表面粗糙度降低了52%。在高速切削方法的最佳加工参数下，可以获得最佳的表面质量和最小的切削力。