机械制造技术课程设计-拖拉机变速箱拨叉的工艺规程及铣宽12槽的工装夹具设计【全套图纸】 ..pdf

设计说明书



题目：拨叉零件的工艺规程及铣宽 12 槽的工装夹具设计




学 生：
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专 业：
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摘 要

本次设计内容涉及了机械制造工艺及机床夹具设计、金属切
削机床、公差配合与测量等多方面的知识。
拨叉加工工艺规程及其铣宽 12 槽的夹具设计是包括零件加
工的工艺设计、工序设计以及专用夹具的设计三部分。在工艺设
计中要首先对零件进行分析，了解零件的工艺再设计出毛坯的结
构，并选择好零件的加工基准，设计出零件的工艺路线；接着对
零件各个工步的工序进行尺寸计算，关键是决定出各个工序的工
艺装备及切削用量；然后进行专用夹具的设计，选择设计出夹具
的各个组成部件，如定位元件、夹紧元件、引导元件、夹具体与
机床的连接部件以及其它部件；计算出夹具定位时产生的定位误
差，分析夹具结构的合理性与不足之处，并在以后设计中注意改
进。

关键词：工艺、工序、切削用量、夹紧、定位、误差。


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ABSTRCT

This design content has involved the machine manufacture craft and
the engine bed jig design, the metal-cutting machine tool, the common
difference coordination and the survey and so on the various knowledge.
The reduction gear box body components technological process and its
the processing ￠ 140 hole jig design is includes the components
processing the technological design, the working procedure design as well
as the unit clamp design three parts. Must first carry on the analysis in the
technological design to the components, understood the components the
craft redesigns the semi finished materials the structure, and chooses the
good components the processing datum, designs the components the craft
route; After that is carrying on the size computation to a components each
labor step of working procedure, the key is decides each working procedure
the craft equipment and the cutting specifications; Then carries on the unit
clamp the design, the choice designs the jig each composition part, like
locates