Note on a novel method for machining parameters optimization in a chatter-free milling process

Note on a novel method for machining parameters optimization in a chatter-free milling process
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关于无颤振铣削过程中加工参数优化的新方法的说明

DOI:
10.1016/j.ijmachtools.2013.04.006
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发表时间:
2013-09
影响因子:
14
通讯作者:
Ding, Han
Ding, Han
中科院分区:
工程技术1区
文献类型:
--
作者:
Zhang, Xiaoming;Ding, Han

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无抖振铣削过程中的加工参数优化是车间实际工程师面临的常见问题。目前还没有详细的、易于应用的考虑铣削机理的优化算法。该通信处理的过程中的无颤振铣削加工参数的优化。首先,建立了基于铣削动力学的加工参数优化模型。优化目标是最小化刀具振动响应和最大化材料去除率,约束条件是保持铣削过程无颤振或稳定,主轴转速低于预定值。重点讨论了如何在减小刀具振动响应的同时使材料去除率最大化的主轴转速选择。采用增广拉格朗日函数法求解非线性优化问题。数值算例表明了所得结果的有效性。此外,还对刀具振动响应的计算方案进行了改进。
Machining parameters optimization in a chatter-free milling process is a common issue for practical engineers at shop floor. The detailed and easily applicable optimization algorithm taking the milling mechanism into account is absent to date. This communication deals with the procedures of optimization of machining parameters in the chatter-free milling process. First, the model of machining parameters optimization is given based on the milling dynamics. The optimization objects are to minimize the tool vibration response and maximize the material removal rate, and the constraint conditions are to keep the milling process chatter-free or stable and let the spindle speed below a predefined one. Emphasis is put on how to select the spindle speed for reducing the tool vibration response and maximization of the material removal rate simultaneously. Augmented Lagrangian function method is employed to solve the nonlinear optimization problem. A numerical example is provided to show the effectiveness of the developed results. Besides, improvements on the calculation scheme of the tool vibration response have been made.
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