摘要在部分中小企业数控铣削加工参数选择方面，许多数控技术人员常常是根据自己的经验来确定切削参数值，导致当选择的铣削参数比较保守时，铣床加工效率较低，以至难于充分发挥数控铣床本身所具有的优势，如果选择的切削参数过低或各参数组合不合理时，容易导致切削效率低，影响车间工作进度与企业效益。因此，对数控铣削加工参数进行优化是提高生产效率、降低生产成本的一种重要手段。56679

本论文以中低速铣削加工为研究对象，深入研究了铣削加工动力学与仿真优化的相关问题，通过锤击试验，传函分析，模态辨识获得了刀具与机床的模态参数，为参数优化系统进行动力学仿真优化提供刀具模态文件，通过数学建模分析处理现有工艺参数，在动力学实验与仿真研究的基础上实现了铣削加工过程切削参数优化。

最后将优化前后的实验数据输入金属塑性成形软件仿真，通过对比优化前后的仿真结果，验证优化后的切削参数是否满足机床的约束，是否能满足零件的加工质量。最终，在合理的工艺参数的基础上，避免了加工时铣削参数的不合理，刀具的损坏，提高加工效率。

毕业论文关键词：动力学实验；切削参数优化；缸盖；Deform-3D

Abstract

In most SMEs CNC milling parameter selection, the majority of CNC technicians are often determined based on their experience, led to the selection of the cutting parameters are conservative, milling efficiency is low, as well as CNC milling machine itself is difficult to give full play to the advantages, if you select the cutting parameters is too low or unreasonable various combinations of parameters, easily lead to the cutting efficiency is low, affecting the progress of the workshop and business benefits. Therefore, the CNC milling parameters were optimized to improve production efficiency, reduce production costs is an important means.

In this thesis, medium and low speed milling for the study, in-depth study of the milling dynamics and simulation optimization related issues, by hammering test, transfer function analysis, modal identification obtained with the machine tool modal parameters for parameter optimization system dynamics simulation optimization tool modal files through mathematical modeling and analysis to deal with existing process parameters, in kinetic experiments and simulation studies based on the cutting parameters of the milling process optimization.

Finally, before and after optimization of the experimental data into the metal forming simulation software, by comparing simulation results before and after optimization, arrive at the optimum cutting process parameters. Finally, in the reasonable parameters, based on the milling parameters to avoid the processing of unreasonable damage to the tool, the processing efficiency is low.

Keywords: Kinetic experiments；cutting parameters optimization；Head；Deform-3D

目录

第一章　　绪论 1

1.1　论文研究的目的与意义 1

1.2　切削参数优化技术的发展情况 2

1.2.1　国外研究情况 2

1.2.2　国内研究情况 4

1.3　主要研究内容 6

第二章　　缸盖零件参数优化总体方案设计 7

2.1　柴油机缸盖零件的优化对象确定 7

2.1.1　缸盖零件的特征分析 7

2.1.2　缸盖零件加工工序的确定与分析 7

2.2　铣削加工参数优化方案设计