高速列车车体底盘连接板高速高效加工方法

针对高速列车车体底盘连接板的加工问题，提出一种高速高效的加工方法。基于工艺系统模态分析和铣 削过程动力学模型分析，采用切削加工中的再生颤振理论，对加工过程的颤振稳定域进行仿真，给出与铣削加工过 程工艺参数相关的颤振稳定域结果；在动力学仿真计算的基础上，以主要的加工工艺参数主轴转速、进给量、轴向 切削深度、径向切削深度为设计变量，以最小加工时间为优化目标进行优化计算，得到满足一定优化目标和优化条 件的工艺参数，重点以数控加工工艺参数的优化选择、金属材料去除率增加为目标的数控高速高效加工。结果表明， 该方法可形成铝合金高效切削数据手册、铝合金典型零件高效数控加工的程序和工艺规范。

High-speed High-efficiency Processing Method for Connecting Plate ofHigh-speed Train Chassis

A high speed and high efficiency machining method is proposed to solve the problem of machining the connecting plate of the chassis of high-speed train. Based on the modal analysis of technological system and the dynamic model of milling process, the chatter stability domain of milling process is simulated by using the theory of regenerative chatter in cutting process, and the results of chatter stability domain related to technological parameters of milling process are given. On the basis of dynamic simulation, the main machining process parameters such as axial speed, feed rate, axial cutting depth and radial cutting depth are taken as design variables, and the minimum machining time is taken as optimization target to carry out optimization calculation, and the process parameters meeting certain optimization objectives and optimization conditions are obtained. It focuses on the optimization of CNC machining process parameters and the increase of metal material removal rate as the goal of high-speed and efficient CNC machining. The results show that the method can form the data handbook of aluminum alloy efficient cutting, the program and process specification of efficient CNC machining of typical aluminum alloy parts.