The dynamic characteristic parameter of milling system plays a very important role in the stability of cutting process,and obtaining the parameter expressed by the tool tip frequency response function is the prerequisite for realizing the non-flutter cutting.Based on the response coupling substructure method,the milling system is divided into two subsystems:spindle shank and tool.The tool subsystem is further subdivided into two subsystems:tool bar and tool teeth.The study conducts modal hammer experiment and second-order finite difference method,simplifies milling cutter into Euler-Bernoulli beam,calculates the frequency response function of milling cutter substructure,obtains the tool tip frequency response function of milling system through response coupling,and verifies the correctness of the model by experiments.
关键词
刀具尖点频响函数/响应耦合子结构法/二阶有限差分法/模态实验
Key words
Tool tip frequency response function/Response coupling substructure method/Second-order finite difference method/Modal experiment
维普
万方数据