薄壁件铣削加工工艺方案设计及仿真分析

摘要

薄壁件结构形状复杂,外形协调性要求较高,零件外轮廓尺寸相对截面尺寸较大,加工余量较大,相对刚度低,加工工艺性差,不易控制加工精度.以铣削宽度、铣削深度、进给量、铣削速度为基本参数,设计了四因素四水平的正交实验方案,并且基于高速铣削加工技术和斯沃数控仿真软件对四因素四水平实验方案进行了仿真,探究了铣削参数对薄壁件加工表面质量的影响规律.仿真结果显示:铣削速度对零件的表面粗糙度影响最大,其次是铣削深度,再次是进给量,影响最小的是铣削宽度.%The shape of the thin-walled part is complex,the shape coordination is high,the dimension of the part is bigger than the cross-sectional dimension,the machining margin is large,the relative rigidity is low,and the craftsmanship is not easy to control.The paper designs the orthogonal design scheme of four factors and four levels based on the cutting width,cutting depth,feed rate and cutting speed.Taking four-factor four-level experimental scheme,it realizes the high-speed machining technology,applies Swan NC simulation software to analyzes the influence of cutting parameters to the surface quality of thin-walled parts.The simulation results show that the cutting speed has the greatest influence on the surface roughness of the part,the second is the cutting depth,then is the feed rate,and the smallest is the cutting width.