轴齿轮的机械加工工艺和工装设计设计

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1、湖南农业大学东方科技学院课程设计说明书课程名称：机械设计基础题目名称：轴齿轮的机械加工工艺及工装设计班级：2012级机制专业1班姓名：刘盼学号：201241903206指导教师：陈志亮评定成绩：教师评语：指导老师签名：20年月日成绩评阅教师日期内容摘要：按照题目要求，对工件的工艺要求和技术要求进行分析，通过所学的知识先选择合理的毛坯材料、外形与尺寸。并选择合理的定位基准与加工顺序。通过查找工艺手册选择并计算工件的加工余量，制定最优的工艺路线，以节省成本和工时。再对最终的工艺路线的各工序进行分析与计算其切削用量、进给量和切削速度，并计算所需

2、工时。加工齿轮时，综合考虑选择插齿进行齿轮加工，分析其工艺性确定工件的定位与夹紧方案，再计算其定位误差和夹紧力，设计其专用的夹具。关键词：轴齿轮、加工工艺、工序、夹具；目录1.零件的工艺分析·····································································41.1零件的结构特点·····································································41.2技术要求····················

3、·························································41.3加工工艺性··········································································42.毛坯的确定············································································53.零件的基准选择······································

4、·······························64.重点工序的说明·····································································65.工艺路线的制定·····································································66.加工余量的确定·····································································77.各

5、工序切削用量的选择及工时的计算········································98.专用夹具的设计···································································198.1问题的提出··········································································198.2定位基准的选择············································

6、··························208.3定位误差分析········································································208.4夹紧力的计算········································································209.课程设计心得体会································································2010

7、.参考文献···········································································2011.附录Ⅰ机械加工工艺过程卡·················································21附录Ⅱ机械加工工序卡·······················································221.零件的工艺分析1.1零件的结构特点如题目要求，所加工的零件为一个轴齿轮。其一端为一个连续的短轴径有一个键槽和另

8、外一个零件进行配合。另一端为Φ52.5mm、齿数为19、模数是2.5的齿轮。在齿轮的一端加工一个Φ28mm，长度为17mm的孔，另一端也要加工Φ32mm长为44mm，精度要求比较高的孔，在孔的