刹车支架——A3
摘要
夹具是零件加工的夹紧装置，是加工零件的一种必不可少的装置。夹具利用率高，经济性好，对功能组件的使用和数量少。随着零件的尺寸变化，越来越多的夹具被淘汰了，因此，设计专用夹具是十分有必要的。在设计专用夹具时要考虑工件的定位方案，工件的夹紧方案和设计夹紧机构，夹具的其他组成部分，夹具的结构形式等。
本次设计的题目是刹车支架工艺工装设计，根据老师给的图纸要求进行加工工艺规程设计和夹具设计，在掌握零件作用的基础上，对零件的工艺进行分析。针对设计给定的题目，设计里面主要对机床夹具进行设计。本夹具体是以保证加工精度，生产效率和便于工人操作为宗旨展开的设计。
设计之初我查阅相关数据及国内外关于机床夹具的文献，在看懂零件图的同时对零件的结构和工艺进行分析，明确粗基准和精基准的选择，确定零件的加工余量与毛坯的尺寸、从而确定零件的加工工艺过程、计算各工序的切削用量及工时。最终完成了本次设计所需的夹具。
关键词：夹紧机构；刹车支架；加工工艺；夹具设计；切削用量
Abstract
Jig is the clamping device for parts processing,which is an essential device for processing parts. The fixture has the advantages of high utilization rate, good economy, and less use and quantity of functional components. With the size changes of parts, more and more fixtures have been eliminated. Therefore, it is necessary to design special fixtures. When the special fixture is designed, the positioning scheme of theworkpiece should be considered, the clamping scheme of theworkpiece and the design and clamping mechanism, the other components of the fixture, the structural form of the fixture and so on.
The title of this design is the design of the brake support process tooling. According to the requirements of the teacher's drawings, the process planning and fixture design are required. On the basis of mastering the role of the parts, the process of the parts is analyzed. For the design of a given topic, the design mainly focuses on the design of machine tool jig. The clip is specifically designed to ensure machining accuracy, production efficiency and ease ofworker operation.
At the beginning of the design, I consulted the relevant data and the literature about machine tool jig at home and abroad. At the same time, I analyzed the structure and technology of the parts at the same time of understanding the part drawings, made clear the choice of the rough datum and the fine datum, determined the machining allowance and the size of the blank, thus determined the process of the addition of the parts, and calculated the cutting of each process. The amount and time ofwork. Finally, the fixture required for this design is completed.
Keywords: clamping mechanism; brake bracket; processing technology; fixture design; cutting parameters
目录
摘要I
Abstract II
1绪论1
1.1机床夹具的分类1
1.2机床夹具的发展趋势2
1.3夹具设计的基本要求2
2工艺规程的设计4
2.1确定毛坯的的制造形式4
2.2基准的选择5
2.3制订工艺路线5
2.4机械加工余量、工序尺寸及毛坯尺寸的确定7
2.5确定切削用量及基本工时8
3钻、扩、铰Ф14H9和Ф16H9孔专用夹具的设计17
3.1问题提出17
3.2定位基准的选择17
3.3定位元件的设计17
3.4切削力和夹紧力的计算17
3.5夹具设计及简要操作说明17
总结19
致谢20
参考文献21
钻夹具装配图——A1
毛坯图——A3
套筒——A4
支承座——A4
钻夹具体——A1
钻模板——A4
工序卡30
工序卡40
工序卡50
工序卡60
工序卡70
工序卡80
工序卡90
工序卡100
过程卡
夹具设计部分
字数统计
说明书前三页
