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，设计一套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。 本次设计的题目是盘套类零件加工工艺及其钻3-Φ12孔的夹具设计，根据老师给的图纸要求进行工艺设计和夹具设计，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：盘套类；钻3-Φ12孔；加工工艺；夹具设计 Abstract Fixture is a clampi
ng device for parts processi
ng, a
nd is a
necessary device for machi
ni
ng parts. The utility rate of the fixture is high, the eco
nomy is good, a
nd the use a
nd qua
ntity of the fu
nctio
nal compo
ne
nts are few. As the size of the parts cha
nges, more a
nd more clamps are elimi
nated. Therefore, it is
necessary to desig
n a set of special fixtures. Whe
n desig
ni
ng special fixture,we should co
nsider the locatio
n pla
n ofworkpiece, clampi
ng scheme a
nd clampi
ng mecha
nism, other parts of fixture, fixture structure a
nd so o
n. The theme of this desig
n is the processi
ng tech
nology of the disk sleeve parts a
nd the desig
n of the fixture for drilli
ng the 3- diameter 12 holes. Accordi
ng to the drawi
ngs requireme
nts of the teacher, the process desig
n a
nd fixture desig
n are carried out, a
nd the tech
nology of the parts is a
nalyzed based o
n the role of the parts. I
n order to desig
n a give
n topic, the desig
n of the fixture is mai
nly desig
ned i
n the desig
n. The clamp is desig
ned to e
nsure the processi
ng precisio
n, productio
n efficie
ncy a
nd easy operatio
n for theworkers. At the begi
n
ni
ng of desig
n I refer to the releva
nt data a
nd literature at home a
nd abroad o
n the fixture, structure a
nd process of parts i
n the read parts map at the same time a
nalysis, clear coarse a
nd fi
ne refere
nce base selectio
n, determi
ne the machi
ni
ng allowa
nce a
nd the size of the bla
nk, so as to determi
ne the parts processi
ng process, calculatio
n of the process of cutti
ng dosage a
nd time. Fi
nally, the fixture required for this desig
n is completed. Keywords: disc type; drilli
ng 3- diameter 12 holes; processi
ng tech
nology; fixture desig
n 目录 摘要I Abstract II 第1章绪论1 1.1机加工工艺规程及机床夹具的概述1 1.2机床夹具的研究现状2 1.3机床夹具的发展方向2 第1章零件的分析4 1.1零件的作用4 1.2零件的工艺分析4 第2章工艺规程设计5 2.1确定毛坯的制造形式5 2.2基面的选择5 2.2.1粗基准的选择原则5 2.2.2精基准选择的原则5 2.3制订工艺路线6 2.4机械加工余量及基本工时的确立6 第3章钻3-Φ12孔夹具设计17 3.1定位基准的选择17 3.2切削力及夹紧力计算17 3.3定向误差分析18 总结20 参考文献21