机械5

CA6140机床法兰盘夹具设计及计算机辅助工程分析 摘要 本次设计题目是CA6140机床法兰盘夹具设计及计算机辅助工程分析，主要内容是： 第一，查阅书籍资料了解法兰盘的功用、常态受力情况、机床总成中的机构位置、相应的技术要求以及工态环境，确定法兰盘的主要工作表面和形式。。通过分析计算制定零件的毛坯种类、制造方法以及尺寸公差。 第二，根据基准选择原则确定定位基准，零件各个表面粗糙度要求不一而对应不同的加工方法，并将方法同意规划划分，最后确定工序集中程度以此集群划分工序。加工工艺规程的拟定过程中会因基准选择的不同出现至少两套工艺方案，经过分析选择经济合理的工艺方案，确定工序使用机床并计算出每道工序的切削用量和工作工时，最后编制机械工艺卡片。 第三，从加工工艺规程中选择一道工序进行夹紧装置的设计（本次设计选择的工序为法兰盘4×9孔的加工工序步骤）。首选了解已选择工序的上一步零件的加工程度及本道工序的具体加工方式与相应机床的夹紧装置的类型，根据夹紧力的基本原则和自由度的完全限制选择合理类型。依照夹具零件的受力分析与相对位置选择合适的材料并进行计算。最后整理计算过程与分析材料编写说明书，利用CAD软件绘制平面图，在CATIA软件中绘制三维专配图及零件图。最终完成整个设计任务。 关键词：机械;法兰盘;加工工艺;夹具设计 Abstract This graduatio
n desig
n topic is CA6140 machi
ne tool fla
nge fixture desig
n a
nd computer aided e
ngi
neeri
ng a
nalysis, the mai
n co
nte
nt is: First, access to books data to u
ndersta
nd the fu
nctio
n of the fla
nge,
normal force, machi
ne tool assembly of mecha
nism positio
n, the correspo
ndi
ng tech
nical requireme
nts a
ndworki
ng e
nviro
nme
nt, a
nd determi
ne the fla
nge surface of the mai
nwork a
nd form. The types, ma
nufacturi
ng methods a
nd dime
nsio
nal tolera
nces of the partswere calculated a
nd calculated. Seco
nd, accordi
ng to the basic selectio
n pri
nciple to determi
ne the locati
ng datum, parts each surface rough
ness requireme
nt ra
nge correspo
ndi
ng to the differe
nt processi
ng method, a
nd the method agreewith pla
n
ni
ng divisio
n, the fi
nal co
nce
ntratio
n to determi
ne process cluster partitio
n process. Processi
ng procedure i
n the process of the proposed due to the differe
nce of be
nchmark choicewill appear at least two sets of process scheme, after a
nalysis of eco
nomic a
nd reaso
nable process scheme, determi
ne the process of machi
ne tool to be used a
nd everyworki
ng procedure to calculate the cutti
ng parameter a
ndworki
ng hours, fi
nally prepare mecha
nical process card. Third, from the selectio
n procedure i
n the machi
ni
ng process pla
n
ni
ng the desig
n of the clampi
ng device(the desig
n selectio
n process for the machi
ni
ng of the fla
nge 4x 9 hole process step). Preferred k
now already to have chose
n process step o
n the compo
ne
nts of the processi
ng level a
nd the procedure of the specific processi
ngway a
nd the correspo
ndi
ng machi
ne tool clampi
ng device type, accordi
ng to the basic pri
nciple of clampi
ng force a
nd the degree of freedom completely limited choice reaso
nable type. Accordi
ng to the force a
nalysis a
nd relative positio
n of the fixture part, select the suitable materials a
nd carry out the calculatio
n. Fi
nally, the calculatio
n process a
nd a
nalysis materialswere prepared, a
nd the CAD softwarewas used to draw the pla
ne graph, a
nd the 3d special matchi
ng a
nd part drawi
ngswere draw
n i
n CATIA software. Fi
nally complete the graduatio
n desig
n task. Keywords: machi
ne; fla
nge; machi
ni
ng process; fixture desig
n 目录 第1章绪论1 第2章零件的结构工艺性分析2 2.1零件的作用2 2.2零件的工艺性分析2 第3章工艺规程设计4 3.1确定毛坯的制造形式4 3.2确定基准4 3.2.1粗基准的选择4 3.2.2精基准的选择4 3.3工艺路线的制订5 3.3.1加工方法的确定5 3.3.2不同工序、方式的划分6 3.3.3不同工序、方式的工作顺序6 3.4机械加工余量、工序尺寸及毛坯尺寸的确定8 3.5确定切削用量及基本工时13 3.5.1加工条件13 3.5.2计算切削用量13 第4章夹具设计与分析18 4.1问题的提出18 4.2夹具设计18 4.2.1夹具结构和类型的选取18 4.2.2夹具定位元件的选择19 4.2.3钻套的设计20 4.2.4钻模板设计21 4.2.5夹具体的设计22 4.2.6其它装置23 4.2.7关于夹紧装置的计算23 4.2.8切削力计算26 4.2.9机床夹具精度校核27 4.2.10绘制钻模图纸29 4.2.11拆分夹具零件图29 第5章计算机辅助工程分析32 第6章全文总结36 致谢37 参考文献38