机械5

摘要 零件的加工工艺编制，在机械加工中占有非常重要的地位，零件工艺编得合不合理，直接关系到零件最终能否达到质量要求；另外，夹具的设计也是不可缺少的一部分，它关系到能否提高加工效率的问题。因此这两者在机械加工中是至关重要的环节。 本设计说明书第一章首先对圆盖的结构特征和工艺进行了深入的分析，之后确定了圆盖的生产类型，紧接着对圆盖的工艺规程进行了系统的说明。其主要内容包括毛坯的制造形式；圆盖的工艺路线；圆盖的毛坯尺寸；各道工序加工余量的确定；各道工序的定位基准以及基本工时的计算。接下来，由上面的工艺规程，我们可以得到圆盖的各项参数，通过AutoCAD软件，绘制出圆盖的零件图。根据圆盖的工艺规程和零件图各参数进行工艺文件的编制。 本设计说明书第二章内容是针对圆盖工艺规程中的钻圆盖Φ90外圆面Φ10孔的夹具设计。首先，本设计说明书对该道工序的定位方案进行了详细的分析，确定定位方案后选择定位元件和夹紧力作用点，夹紧方式。在整个定位、夹紧的确定工作都结束后，开始进行切削力和夹紧力的计算以及校核工作，计算该夹具各方向的定位误差以及校核。最后，通过Pro/E三维设计软件设计出该套夹具的三维图。 关键词：圆盖工艺规程夹具设计 ABSTRACT The processi
ng tech
nologyof the parts,occupiesveryimporta
nt positio
n i
n the mecha
nical processi
ng.The reaso
nable degree of the compo
ne
nt directlyrelated to the compo
ne
nt that ca
n meet the qualityrequireme
nts.I
n additio
n,the fixture desig
n is also a
n i
ndispe
nsable part.It is related to the problemswhich ca
n improve the efficie
ncyof the machi
ni
ng.So both of them is avital li
nk i
n the mecha
nical processi
ng. First of all,the first chapter of this desig
n specificatio
n to the structure characteristics a
nd tech
nologyof the dome carried o
n the thorough a
nalysis.After that,determi
ned the productio
n type of the dome,a
nd the
n illustrate the procedure of the dome systematically.Its mai
n co
nte
nts i
nclude the ma
nufacture of bla
nk form; Dome of the craft route; The bla
nk size of dome; The determi
natio
n of eachworki
ng procedure machi
ni
ng allowa
nce; The locati
ng datum of differe
nt operati
ng procedures a
nd calculatio
n of the basicworki
ng hours.Next,bythe above procedure,we ca
n getvarious parameters of the dome byAutoCAD software,the
n drawthe detail drawi
ngs of the dome. The co
nte
nt of the seco
nd chapter i
n the desig
n specificatio
n,i
ncludi
ng the theoryof dome procedure drill domeΦ90 cyli
ndrical surfaceΦ10 hole jig desig
n.First of all,this desig
n ma
nual for the procedure a
nalyzed the locati
ng of this scheme i
n detail.Determi
ne the positio
ni
ng scheme choice after positio
ni
ng compo
ne
nts a
nd clampi
ng force poi
nt a
nd the clampi
ngway.After the determi
natio
n of the e
ntire positio
ni
ng a
nd clampi
ngwork,we ca
n begi
n the calculatio
nwork of the cutti
ng force,the clampi
ng force a
nd checki
ng.Calculate the fixture positio
ni
ng error of each directio
n a
nd the
n check it.Fi
nally,desig
n the jig set of three-dime
nsio
nal figure bythe 3 d desig
n software
named Pro/E. Keyword: dome process pla
n
ni
ng jig desig
n 目录 摘要1 ABSTRACT 2 前言1 第一章零件的分析2 1.1零件的作用2 1.2零件的工艺分析2 第二章工艺规程设计3 2.1确定毛坯的制造形式3 2.2基面的选择3 2.2.1粗基准的选择3 2.2.2精基准的选择3 2.3制定工艺路线3 2.4机械加工余量、工序尺寸及毛坯尺寸的确定4 2.5确定切削用量及基本工时5 第三章专用夹具设计24 3.1定位基准的选择24 3.2定位元件的设计24 3.3定位误差分析24 3.4钻削力与夹紧力的计算25 3.5钻套、衬套、钻模板及夹具体设计26 3.6夹紧装置的设计28 3.7夹具设计及操作的简要说明29 致谢30 参考文献31