Stability analysis for variable spindle speed milling with helix angle using an improved semi-discretization method

Stability analysis for variable spindle speed milling with helix angle using an improved semi-discretization method
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改进的半离散法螺旋角变主轴转速铣削稳定性分析

DOI:
10.1007/s11431-012-5090-4
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发表时间:
2013-03
影响因子:
4.6
通讯作者:
Han JianXin
Han JianXin
中科院分区:
工程技术2区
文献类型:
--
作者:
Xie QiZhi;Zhang QiChang;Wang Wei;Jin Gang;Han JianXin

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铣削过程中的颤振是影响铣削表面质量、加工精度和刀具寿命的主要障碍。它的预测和避免是机械加工领域中具有挑战性的课题。本文提出了一种改进的半离散化方法来预测变转速螺旋角铣削加工。基于刀具几何和加工理论,将切削区域划分为五种不同的情况来计算切削力。探讨了径向浸入率和调制参数对变速铣削的影响。仿真结果表明,与恒转速方案相比,变转速方案可以获得更大范围的稳定性。总之,螺旋角和变主轴转速对铣削过程的稳定性起着重要作用。
Chatter in milling is still a main obstacle in surface finish, machining accuracy and tool life. Its prediction and avoidance are challenging subjects in the machining field. In this paper, an improved semi-discretization method is proposed to predict variable spindle speed milling with helix angle. Based on tool geometry and machining theory, the cutting region is divided into five different cases to calculate the cutting force. The influences of radial immersion rate and modulation parameters relative to variable spindle speed milling are explored. By comparison with constant spindle speed, the simulation results show that the variable spindle speed scheme can obtain a larger range of stability. In short, the helix angle and variable spindle speed play an important role in the stability of milling process.
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