Existing methods orienting for optimizing cutting parameters in milling process with spindle speed variation (SSV) only optimally selected the axial depth of cut and only considered the acceleration constraint of spindle. This article proposes a systematic optimization method to obtain the best combination of multiple machining parameters (axial and radial depths of cut) and SSV’s parameters (the ratio of variation amplitude and the ratio of variation frequency) so that the chatter-free milling tool path can be shortened. Both acceleration and jerk constraints of spindle are considered. A continuous variable feedrate scheduling algorithm is used to eliminate the influence of spindle speed variation on feed per tooth, which is thus not required to treat as an optimization variable. The machining parameters of each iterative step are updated by following that the number of axial and radial cutting layers could be decreased. Discrete optimization method is combined with chatter stability analysis to solve the problem. A series of milling experiments verify that the proposed method can achieve the shortest tool path with chatter-free condition.

中文翻译：

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基于主轴变速法的无颤振铣削刀具路径参数优化

现有的以主轴变速（SSV）铣削加工切削参数为导向的优化方法仅最优选择轴向切深，且仅考虑主轴加速度约束。本文提出了一种系统优化方法，以获得多个加工参数（轴向和径向切深）和SSV参数（变化幅度之比与变化频率之比）的最佳组合，从而实现无颤振铣削刀具路径被缩短。同时考虑主轴的加速度和冲击力约束。采用连续可变进给率调度算法来消除主轴转速变化对每齿进给量的影响，因此不需要将其视为优化变量。通过减少轴向和径向切削层的数量来更新每个迭代步骤的加工参数。离散优化方法与颤振稳定性分析相结合来解决该问题。一系列铣削实验验证了该方法能够实现无颤振条件下的最短刀具路径。