毕业设计轴类零件的数控加工院系名称：机电工程学院专业：机械制造与自动化班级：09机械1班学号：2009061387学生姓名：文金卓指导教师：魏成杰林立日期：2011.12.20摘要：数控技术是以数字编程实现控制机械或其他设备自动工作的技术，是未来机械制造行业发展的必然趋势。本文主要讨论关于数控加工轴类零件结构工艺分析，加工工艺装备的选择，数控加工工艺编制，CAXA车数控自动编程，数控仿真软件VNUC的使用.关键词：数控车床,CAXA数控车,轴类零件,数控加工工艺,自动编程,数控加工仿真Abstract:Numericalcontroltechnologyisdigitalprogrammingtocontrolthemechanicalorotherautomaticequipment,thetechnical,machinerymanufacturingindustryisthefuturetrendofdevelopment.Thisarticlemainlydiscussaboutthencmachiningaxialpartsstructureprocessanalysisandprocessingtechnologyandequipmentchoice,CNCprocessingtechnologyofCAXAcarnumericalcontrolautomaticprogramming,ncsimulationsoftwareVNUCuse.Keywords:CNClathe,CNCCAXAcar,Laddershaftaxis,CNCprocessingTechnology,Automaticprogramming,NCmachiningsimulation••2目录1.零件分析.................................................................................61.1零件的结构工艺性分析.................................................................71.1.1零件的技术要求分析...............................................................71.1.2零件的加工表面的分析.............................................................71.1.3零件尺寸分析.....................................................................71.2零件的材料及毛坯的分析与选择.........................................................82.零件工艺规程的选择.......................................................................82.1.定位基准的选择.......................................................................82.1.1粗基准的选择.....................................................................82.1.2精基准的选择.....................................................................82.1.3零件表面加工方法的选择...........................................................92.2加工顺序的安排.......................................................................92.2.1加工阶段的划分..................................................................92.2.2加工顺序的安排...................................................................92.2.1工序基准的选择...................................................................92.3机床及工艺装备的选择................................................................102.3.1机床的选择......................................................................102.3.2工艺装备的选择..................................................................103.加工工艺的编制..........................................................................113.1确定加工方案........................................................................113.2切削用量的确定......................................................................113.2.1背吃刀量的选择.................................................................113.2.2切削速度的选择..................................................................123.3.3主轴转速及进给量的确定..........................................................123.3.4进给速度速度的选择..............................................................123.3数控加工工艺卡......................................................................134.CAXA数车自动编程..............................................................
