中文摘要：

从维持颤振所需的能量补充和质量效应的角度，提出一种更便捷的机床颤振薄弱部件识别方法，即以机床的最终执行部件之一为薄弱部件。以YK3610滚齿机的主轴系统为例，介绍抗颤振结构改良过程中的几个关键点：选择传递函数的最大负实部为优化目标函数；建立主轴有限元数学模型；根据抗颤振敏感性和部件结构约束缩减被优化设计参数的数量；选择Sequential Quadratic Programming（SQP）法为优化算法。最后提供了一个滚刀主轴的优化效果模拟试验。

英文摘要：

From the perspectives of energy supply to keep chatter and mass effect, a more efficient way to confirm the chatter weak component in a machine was proposed, namely, one of the final executive components in a machine was the weakest one for resisting chatter. Taking the spindle system in YK3610 as an example, several key steps in improving structure for anti-chatter were introduced ： the negative real part of the transfer function was used as objective function of optimization, a mathematical model of spindle system was built with finite elements, the modified design parameters were reduced based on their sensitivity of anti-chatter and the structure restrictions in component and the Sequential Quadratic Programming （SQP） method was chosen as the optimization algorithm. A demonstration for simulating the optimized effect on hob spindle system was provided.