轴类零件加工设计毕业设计（论文）.docVIP

摘 要? Abstract With the continuous development of science and technology, numerical control technology in the enterprise play more and more important role. Numerical control processing manufacturing technology is increasingly a wide range of applications, to spare parts processing programming, before technology analysis plays a very important role. The design of the CNC lathe through typical shaft parts process characteristics, CNC processing process analysis, and gives the general parts for CNC processing technology analysis method, to design the reasonable processing technology process, give full play to the nc machining of high quality, high efficiency, low cost characteristic. The design specification with typical shaft parts CNC lathe as an example, according to the material, the machining by contour shape, processing precision suitable machine tool, the processing plan formulated, determine the parts processing order, each working procedure, the cutting tool, fixture and cutting dosages, write processing components of the program. According to the specifications will work out parts, and parts of self data, in the process that should be paid attention in the matters. To improve the quality, the actual production manufacturing has certain directive significance. Key words：Axial parts; Numerical control processing; Process design 目 录 摘 要 I Abstract II 1机床的选用及简介 1 1.1 机床的选择 1 1.2 机床的组成 2 1.3 机床的工作原理 2 1.4 机床的工作特点 3 2 零件的工艺分析 4 2.1零件工艺分析 4 2.2确定加工方案 4 2.3 加工路线和加工顺序的确定 5 2.4 切削用量的选择 6 2.5 刀具的选择 8 3加工工序的编排 10 3.1 工序与工步的划分 10 3.2 加工工序的编排 10 3.3 加工工序卡片 11 3.4 加工程序 11 3.5 零件加工中的难点与解决方案 14 4 数控车床操作注意事项 15 4.1 操作阶段注意事项 15 4.1数控机床设备安全操作规程 5 结论 16 6 致谢 17 7 参考文献 18 6 附录 19 附录一 指令字符 19 附录二 常用G指令代码 20 1 机床的选用及简介 1.1 机床的选择 在选择机床时，即要考虑其生产的经济性，又要考虑其适用性和合理性。①机床的工作区域尺寸必须与所加工零件的外形轮廓尺寸相适应。如直径不大的导柱、导套等可选在卧式车床上加工，而外径较大长度较短的轴类零件，则应选择在立式车床上加工；小的零件的孔可用立式普通钻床加工；而大工件上的孔宜在摇臂钻床上加工；对于孔径和孔距要求比较高的孔，可选择在坐标镗床或立式镗床上加工，以做到合理使用设备。②机床的功率和加工量应与零件工序的加工要求相适应。如粗加工工序应选择功率较大的机床加工；在利用刀具做精细切削时，应