机械5

CA10B解放牌汽车前刹车调整臂外壳的加工工艺规程及钻1-8锥孔夹具设计 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CA10B解放牌汽车前刹车调整臂外壳的加工工艺规程及钻1-8锥孔夹具设计，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：前刹车调整臂外壳；加工工艺；钻1-8锥孔；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 desig
n is the subject of CA10B Jiefa
ng automobile fro
nt brake adjustme
nt arm shell process a
nd 1-8 co
ne drill fixture desig
n, accordi
ng to teacher's drawi
ngs for process desig
n a
nd fixture desig
n, based o
n masteri
ng the role of parts, the parts of the process a
nalysis. 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: fro
nt brake adjustme
nt arm shell; processi
ng tech
nology; drilli
ng 1-8 taper; fixture desig
n 目录 摘要1 ABSTRACT 2 第一章绪论4 第二章概述5 2.1夹具夹紧装置及夹具体的基本要求5 2.2机床夹具功用6 2.3机床夹具在机械加工中的作用6 2.4机床夹具组成7 2.5机床夹具的分类8 2.6机床夹具的设计要求9 2.7现代机床夹具的发展发向10 第三章零件的分析12 3.1零件的用途介绍。 12 第四章工艺规程设计13 4.1确定毛坯的制造形式。 13 4.2基准的选择。 13 4.3拟定工艺路线。 13 4.4机械加工余量，工序尺寸及毛坯尺寸的确定。 17 第五章钻1/8锥孔夹具设计33 5.1设计要求33 5.2夹具设计33 5.2.1定位基准的选择33 5.2.2切削力及夹紧力的计算33 5.3定位误差的分析34 5.4钻套、衬套、钻模板设计与选用36 5.5夹具设计及操作的简要说明37 参考文献38 致谢39