轴齿轮的机械加工工艺及工装设计设计书详解.doc
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University of South China
机械工程学院
机械专业 课程设计说明书
设计题目：轴齿轮的机械加工工艺及工装设计
课程名称： 机械专业课程设计
学生姓名：
学 号：
专业班级：
指导教师：
起止时间： 2013年12月02日至 2013年12月20日
设 计 任 务 书
题目：轴齿轮的机械加工工艺及工装设计
如图所示轴齿轮，齿数Z为19，模数M为2.5，材料为45钢。生产类型为大批量生产，工艺类型采用常规工艺，工序安排采用工序分散原则，设备采用通用设备+专用工装。
技术要求：1. 轴的内圆与外圆的圆跳度不大于0.03；
2. 毛坯调质处理；
3. 齿面硬度为HRC45-48。
要求对轴齿轮的机械加工工艺规程及加工齿轮的夹具进行设计。
设计内容：
1. 零件图：1张；
2. 机械加工工艺过程卡：1张；
3. 机械加工工序卡：1套；
4. 夹具装配总图：1张；
5. 夹具零件图：1张；
6. 课程设计说明书：1份。
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·····································································4
1.1零件的结构特点·····································································4
1.2技术要求·············································································4
1.3加工工艺性··········································································4
2.毛坯的确定············································································5
3.零件的基准选择·····································································6
4.重点工序的说明·····································································6
5.工艺路线的制定·····································································6
6.加工余量的确定·····································································7
7.各工序切削用量的选择及工时的计算········································9
8.专用夹具的设计···································································19
8.1问题的提出··········································································19
8.2定位基准的选择······································································20
8.3定位误差分析········································································20
8.4夹紧力的计算········································································20
9.课程设计心得体会·
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