机械5

112-369零件机械加工工艺编制及夹具设计 摘要 伴随制造业的飞速发展，夹具的设计及制作也迎来了其发展的春天。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。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112-369零件机械加工工艺编制及夹具设计。由于该零件需要大批量生产，所以设计专用夹具，保证零件的加工质量。本次设计针对加工4-M4深10螺纹孔设计了一套钻床夹具。设计之初通过对零件图的分析，完成零件的三维建模、零件图和毛坯图的绘制；对零件的加工工艺过程卡及其工序卡进行了编制，确定了切削用量等等内容，装配图及夹具体零件图等。 本次设计的专用夹具利用率高，经济性好，使用元件的功能强并且数量少，配套费用低，降低了生产成本；采用夹紧装置，缩短停机时间，提高生产效率。通过本次设计在达到教学要求的同时，为以后的学习和工作夯实了基矗 关键词：112-369；大批量；4-M4；钻床夹具 Abstract With the rapid developme
nt of ma
nufacturi
ng, fixture desig
n a
nd productio
n also ushered i
n the developme
nt of the spri
ng. Clamps are parts of the clampi
ng device, processi
ng parts is a
n i
ndispe
nsable device. Fixture utilizatio
n is high, the eco
nomy is good, the use of fu
nctio
nal compo
ne
nts a
nd the
number of small. I
n the desig
n of special fixture to co
nsider theworkpiece positio
ni
ng program, theworkpiece clampi
ng program a
nd desig
n clampi
ng mecha
nism, the other compo
ne
nts of the fixture, fixture structure a
nd so o
n. The desig
n of the title is 112-369 parts of the mecha
nical processi
ng tech
nology a
nd fixture desig
n. As the parts
need to mass productio
n, so the desig
n of special fixtures to e
nsure the quality of parts processi
ng. This desig
n is desig
ned for processi
ng 4-M4 deep 10 threaded hole desig
ned a set of drilli
ng fixture. At the begi
n
ni
ng of the desig
n, the three-dime
nsio
nal modeli
ng of the parts, the drawi
ng of the parts a
nd the drawi
ng of the bla
nks are carried out through the a
nalysis of the parts drawi
ng. The process card a
nd the process card of the parts are compiled to determi
ne the cutti
ng amou
nt a
nd so o
n. A
nd folder parts a
nd other parts. The desig
n of the special fixture utilizatio
n is high, good eco
nomy, the use of compo
ne
nts a
nd the fu
nctio
n of a small
number of low supporti
ng costs, reduci
ng productio
n costs; the use of clampi
ng devices to shorte
n dow
ntime a
nd improve productio
n efficie
ncy. Through this desig
n to meet the teachi
ng requireme
nts at the same time, for the future study a
ndwork to rei
nforce the fou
ndatio
n. Keywords: 112-369; large qua
ntities; 4-M4; drilli
ng fixture 目录 摘要…………………………………………………………..………….…….….Ⅰ Abstract……………………………………………………..………….………...Ⅱ 第1章前言…………………………………………..…………………………. 1 1.1夹具行业的现状……………………………………………….………….1 1.2夹具的特点…………………………….………………………………….. 1 1.3设计夹具的要点……………………………….………………………….1 第2章机械加工工艺规程设计………………………………………………….3 2.1零件的作用和工艺分析及生产类型的确定………………….…………..3 2.1.1零件的作用……………………………………………..…………….3 2.1.2零件的工艺分析……………………………………………..……… 3 2.1.3零件的生产类型的确定……………………………………..……… 4 2.2零件工艺规程设计……………………….…………………………………4 2.2.1零件制造形式的确定………………………………………..………. 5 2.2.2基准的选择……………………………………………………..………5 2.3制定加工工艺路线………………….………………………………………5 2.4机械加工余量的确定……………….………………………………………6 2.5确定切削用量、基本工时及辅助工时…………………………………….8 第3章专用夹具的设计………..…………………………………………………21 3.1问题的提出…………………………………………..……………………21 3.2夹具设计…………………………………..………………………………21 3.2.1对定位元件的基本要求……………………………………..………. 21 3.2.2确定定位方案与定位元件的原则…………………………..……….21 3.2.3夹紧装置设计的基本要求及遵循原则………………………..………21 3.2.4定位方案及定位元件的确定…………………………………..………22 3.2.5定位基准的选择……………………………………………..…………22 3.2.6夹紧装置的确定……………………………………..…………………22 3.2.7夹具体的确定…………………………………………………..………23 3.2.8钻削力的计算……………………………………..……………………24 第4章结束语……………………………………………………………………..26 参考文献 答谢辞