机械制造基本工艺学专业课程设计张紧轮支架.pdf

1零件分析·······················5

1.1零件作用·····················5

1.2零件工艺分析···················5

2零件生产类型······················5

2.1生产纲领······················5

2.2生产类型······················6

3毛坯确实定························6

3.1确定毛坯类型及其制造方法··············6

3.2估算毛坯加工机械加工余量·············6

4定位基准选择······················6

4.1选择精基准·····················6

4.2选择粗基准·····················6

5制订机械加工工艺路线···················6

5.1选择加工方法····················6

5.2加工工艺路线····················7

6加工余量及尺寸确实定····················8

6.1确定粗加工支架上端面加工余量及工序尺寸······8

6.2确定支架底面加工余量及工序尺寸··········9

6.3确定精加工支架上端面加工余量及工序尺寸······11

6.4确定支架右侧面加工余量及工序尺寸·········12

6.5确定支架右侧面φ18孔加工余量及工序尺寸······13

6.6确定支架下端面加工余量及工序尺寸·········15

6.7确定支架小侧面加工余量及工序尺寸·········17

6.8确定支架2*φ13孔加工余量及工序尺寸········17

7切削用量和时间定额确实定················19

8课程设计总结······················21

参考文件·························22

附1张紧轮支架零件图

附2毛坯图

附3机械加工工艺过程综合卡片

附4夹具零件图

附5夹具装配图

机械制造工艺学

课程设计任务书

题目：设计张紧轮支架零件机械加工工艺规程

及工艺装备（年产量为8000件）

内容：

1.张紧轮支架零件图1张

2.毛坯图1张

3.机械加工工艺过程综合卡片1张

4.夹具装配图1张

5.夹具零件图1张

6.课程设计说明书1份

专业机械工程

班级机工100x班

学生xxx、xxx

指导老师xxx

11月1日

序言

此次课程设计任务是针对生产实际中一个零件——张紧轮支架，

制订其机械加工工艺规程。

该零件工艺过程包含了车端面、铣平面、磨平面、钻孔、铰孔等

工序，工艺范围广。经过这次