目 录
1 绪 论 ································ 1 2 零件分析 ······························· 2
零件的特点 ····························· 2 零件的工艺分析 ···························零件的技术要求 ···························零件图纸的工艺分析 ·························3 工艺设计 ·······························零件图样分析 ····························毛坯的选择 ·····························加工余量分析 ····························定位基准的选择 ···························选择机床 ······························选择加工方式 ····························确信装夹方案和选择夹具 切削用量的确信 ···························选择刀具 ······························确信加工工序 ···························· 2 2 2 5
5 5 6 6 6 6 7 9 9 10
·······················确信加工顺序 ···························· 11 确信进给线路 ···························· 11 切削参数确信 ···························· 13
(1)背吃刀量的确信 ····················· 13 (2)进给速度f的确信 ····················· 13 (3)主轴转速的确信 ····················· 14 (4)切削液的选择 ······················ 14 切削液对切削速度、表面粗糙度、加工精度等都有较大的阻碍，加工时必需正确选配。合理的选择切削液能够改善工件与刀具间的摩擦状况降低切削力和削温度，减轻刀具摩损减小工件的热变形，从而能够提高刀具耐费用提高加工效率和加工质量。 ············· 14
4 工艺文件 ······························· 15 5 加工程序编制 ····························· 21 致 谢 ································· 23 参考文献 ································ 24 附 录 ······································································································ 25
1 绪 论
21世纪科学技术突飞猛进，以数控加工为核心的先进制造技术已成为世界各国加速经济进展，提高综合国力和国家地位的重要途径。所谓的数控加工技术确实是指用数字、文字、和符号组成的数字指令来实现一台或多台机械设备动作操纵的技术；它利用数字化操纵系统在加工机床上完成整个零件的加工，提高了零件的加工效率。我院踊跃培育技术型人材的大体理念更是符合当前国情的进展需要，为达到这一目标，咱们更要将理论知识和实际操作紧密联系起来。
这次毕业设计我选的课题是轴类配合零件的加工工艺设计。它突出了数控车削加工的特点及零件加工进程中的工艺性特点。此设计综合运用了所学专业知识：《机械制图》、《数控编程》、《数控车削加工技术》、《机械制造基础》、《机械设计》等，还运用了CAXA电子图版绘制零件图，另外还用到一些基础知识如：运算机、英语等。通过本次毕业设计，巩固和扩展自己所学的专业知识，综合运用所学知识培育自己分析和解决实际问题的能力，培育勇于探讨的创新精神和实践能力；培育正确的设计和研究思想、理论联系实际、严肃认真的科学态度和严谨求实的工作作风；强化质量意识和时刻观念，养成良好的职业适应，为以后实际工作打下良好的基础。
毕业设计螺纹轴数控加工工艺设计
