车铣加工细长轴的振动特性分析
2018-11-12
作者：金成哲，郭畅
单位：沈阳理工大学
摘要：应用正交车铣可以实现细长轴等弱刚度零件的高速和精密切削加工，可作为传统车削加工的替代加工方法。针对细长轴类零件的正交车铣加工，建立了考虑刀具—刀柄—主轴结合面的电主轴以及不同装夹下的工艺系统的有限元模型，并对不同切削参数以及不同装夹方式下的铣刀系统、工件以及工艺系统的幅频特性进行了分析。同时，对比研究了在车铣和车削加工条件下工艺系统的幅频特性，研究表明：在不同装夹方式下车铣加工较车削加工的振动特性有很大改善，研究结果为细长轴类零件的正交车铣加工应用打下理论基础。
关键词：车铣；细长轴；振动特性；工艺系统
中图分类号：TG506；TH161文献标志码：A
Analysis of Vibration Characteristic of Turnmilling Slender Shaft
Jin Chengzhe，Guo Chang
Abstract:In this paper，the high speed and precision machining of slender shaft and other weak rigidity parts can be realized by orthogonal turnmilling，which can be used as an alternative machining method for traditional turning machining.In view of the slender shaft parts orthogonal turnmilling processing，considering cutting toolhandlespindle for the motorized spindle and the finite element model of different clamping of the workpiece is set up.And the different cutting parameters and the milling cutter，workpiece and process system under different clamping way of amplitude frequency characteristics are analyzed.At the same time，the contrast research on turnmilling and turning processing under the condition of amplitude frequency characteristics of and process system have been done.The results show that the different clamping way out of the turnmilling has improve the vibration characteristics of turning processing，it lays the theoretical foundation for the application of the orthogonal turnmilling machining of slender shaft parts.
Keywords:turnmilling；slender shaft；vibration characteristic；process system