机械5

摘要 数控车床是现代加工车间里面重要的加工设备，现代的CAD/CAM都是建立在数控技术之上的。现代数控加工技术知识是现代机械专业学生必需掌握的。在数控加工过程中，要考虑到零件加工工艺路线的安排、加工机床型号的选择、切削刀具的选择、零件加工的定位装夹及数控程序的编制等一系列因素的影响。所涉及到的知识面非常广阔。 本文根据数控车床的加工特点，针对配合件装配件，进行了零件图分析、加工方法工艺方案的确定，工装方案的确定，刀具和切削用量的选择，数控加工程序的编制及仿真检验。通过整个工艺的过程的制定，充分体现了数控加工设备在保证加工精度，加工效率，简化工序等方面的优势。 关键词：数控车床数控编程配合件 Abstract CNC lathe is moder
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ng 目录 摘要2 Abstract 3 1.绪论1 1.1本课题的目的及意义1 1.2数控机床及数控技术的应用与发展1 1.3本课题的主要任务2 2.零件图的分析3 2.1零件图技术要求分析3 2.2零件的三维效果图4 3.零件的工艺规程设计6 3.1表面加工方法的确定6 3.1.1零件一加工方法6 3.1.1零件二加工方法6 3.2加工顺序的安排6 3.3定位基准及装夹方式的选择6 3.4制订工艺路线7 3.5切削用量的选择8 3.5.1、主轴转速的确定8 3.5.2进给速度的确定10 3.5.3、背吃刀量的确定10 3.6加工刀具的选择11 3.7工艺卡片的填写12 4.零件的数控编程及仿真14 4.1 G代码的功能指令14 4.2 G代码的功能指令14 4.2编写数控程序16 4.3程序的仿真加工19 4.3.1程序的导入19 4.3.2设置工件19 4.3.3设置刀具20 4.3.4对刀和输入刀补20 4.3.5仿真加工20 结论22 致谢23 参考文献24