花键轴加工工艺规程及铣键槽夹具设计

00零件尺寸

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。
花键花键轴零件的工艺规程及铣键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。

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 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 the part, clamps the part, guides the part, to clamp concrete and the engine bed connection part as well as other parts; Position error which calculates the jig locates when produces, analyzes the jig structure the rationality and the deficiency, and will design in later pays attention to the improvement.
Keywords: The craft, the working procedure, the cutting specifications, clamp, the localization, the error.
目录
ABSTRCT 3
序言1
一机床夹具介绍2
1 .1夹具的现状及生产对其提出新的要求2
1.2现代夹具的发展方向2
二零件的分析4
2.1零件的作用4
2.2零件的工艺分析4
2.3确定零件的生产类型5
三确定毛坯类型绘制毛坯简图6
3.1选择毛坯6
3.2确定毛坯的尺寸公差和机械加工余量6
3.3绘制毛坯图7
四工艺规程设计8
4.1定位基准的选择8
4.2拟定工艺路线8
4.3加工设备及工艺装备的选用10
4.4加工余量，工序尺寸及公差的确定10
4.5切削用量的计算10
4.5时间定额的计算12
五机床夹具的定位及夹紧13
5.1概述13
5.1.1机床夹具的概念13
5.1.2机床夹具的组成13
5.1.3机床夹具的分类14
5.1.4机床夹具在机械加工中的作用15
5.2工件的装夹方式16
5.3基准及其分类16
5.4工件的定位17
5.4.1工件定位的基本原理17
5.4.2常见定位方式及定位元件18
5.5工件的夹紧19
5.5.1夹紧装置的组成及基本要求19
5.5.2夹紧力的确定20
5.5.3典型夹紧结构20
5.5.4定心夹紧机构21
5.6专用夹具设计21
5.6.1对机床专用夹具的基本要求21
5.6.2专用夹具设计方法和步骤21
5.6.3夹具总图技术要求的制订22
六夹具设计24
6.1夹具设计任务24
6.2拟定夹具定位方案24
6.3绘制夹具装配图24
6.4定位误差分析25
6.5切削力和夹紧力计算26
6.6夹具设计及操作的简要说明27
总结28
致谢29
参考文献30

夹具装配图

夹具体

毛坯图

零件图