机械5

摘要 工艺学是以研究机械加工工艺技术和夹具设计为主技术学科，具有很强的实践性，要求学习过程中应紧密联系生产实践，同时它又具有很强的综合性， 本次设计的课题是法兰盘加工工艺规程及某一工序专用夹具设计，主要内容如下： 首先，对零件进行分析，主要是零件作用的分析和工艺分析，通过零件分析可以了解零件的基本情况，而工艺分析可以知道零件的加工表面和加工要求。根据零件图提出的加工要求，确定毛坯的制造形式和尺寸的确定。 第二步，进行基面的选择，确定加工过程中的粗基准和精基准。根据选好的基准，制订工艺路线，通常制订两种以上的工艺路线，通过工艺方案的比较与分析，再选择可以使零件的几何形状、尺寸精度及位置精度等技术要求得到合理的保证的一种工序。 第三步，根据已经选定的工序路线，确定每一步的切削用量及基本工时，并选择合适的机床和刀具。对于粗加工，还要校核机床功率。 最后，设计第三道工序—设计夹具。先提出设计问题，再选择定位基准，然后开始切削力、夹紧力的计算和定位误差的分析。然后把设计的过程整理为图纸。 通过以上的概述，整个设计基本完成。 关键词机械；加工工艺；夹具设计 ABSTRACT A specialized mai
n specialized course that " mecha
nical ma
nufacturi
ng e
ngi
neeri
ng is studied " is machi
nery , rely mai
nly o
n studyi
ng machi
ni
ng tech
nology a
nd jig to desig
n tech
nological discipli
ne , have very stro
ng practicality , require that should co
ntact productio
n practices closely i
n the lear
ni
ng process, at the same time it has comprehe
nsive the very stro
ng o
ne, The subject of this graduatio
n project is that lathe ri
ng fla
nge processi
ng tech
nology rules a
nd special-purpose jig of a certai
n process are desig
ned, the mai
n co
nte
nt is as follows: First of all, a
nalyse , it is mai
nly a
nalysis of the fu
nctio
n of the part a
nd craft a
nalysis to the part , through part a
nalyse ca
n fi
nd out about basic situatio
n of part, a
nd craft a
nalyse may k
now the processi
ng surface of the part a
nd is it require to process. The processi
ng dema
nd put forward accordi
ng to the part picture, co
nfirm the ma
nufacture form of the bla
nk a
nd sure
ness of the size. The seco
nd step, carry o
n the choice the base , co
nfirm thick datum a
nd precise datum i
n the processi
ng course. Accordi
ng to the datum chose
n , make the craft route , usually make the craft route of more tha
n two ki
nds, with a
nalysi
ng through the compariso
n of the craft scheme, a
nd the
n choosi
ng be able to make such specificatio
n requireme
nts as the precisio
n of geometry form , size of the part a
nd precisio
n of positio
n ,etc. get a ki
nd of process of the ratio
nal assura
nce s. The third step, accordi
ng to the already selected process route, co
nfirm for every steps of cutti
ng co
nsumptio
n a
nd basic ma
n-hour , choose suitable lathe a
nd cutter. To rough machi
ni
ng , will check the power of the lathe . Fi
nally , desig
n the third process - the jig getti
ng i
nto the hole of the ri
ng fla
nge. Put forward the questio
n of desig
ni
ng first , a
nd the
n choose to orie
nt the datum , the
n the calculatio
n that begi
ns to cut stre
ngth , clamp stre
ngth a
nd a
nalysis of the localizatio
n error. The
n put the desig
n course i
n order as the drawi
ng. Through the summary of the above, desig
n a
nd fi
nish basically e
ntirely. Keywords: machi
ne; Process the craft; The to
ngs desig
n 目录 序言1 1零件的分析2 1.1零件的作用2 1.2零件的工艺分析2 2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 2.3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6 2.5确定切削用量及基本工时9 3夹具设计30 3.1问题的提出30 3.2夹具设计30 参考文献33 1绪论 设计是我们在学完大学的全部课程后进行的，是我们对大学四年的学习的一次深入的综合性的总考核，也是一次理论联系实际的训练，这次设计使我们能综合运用机械制造工艺学中的基本理论，并结合实习中学到的实践知识，独立地分析和解决工艺问题，初步具备了设计一个中等复杂程度零件的工艺规程的能力和运用夹具设计的基本原理和方法，拟订夹具设计方案，完成夹具结构设计的能力，也是熟悉和运用有关手册、图表等技术资料及编写技术文件等基本技能的一次实践机会。因此，它在我们大学生活中占有重要地位。就我个人而言，我也希望通过这次设计对自己未来将从事的工作进行一次适应性心理，从中锻炼自己分析问题，解决问题的能力，对未来的工作发展打下一个良好的基础。由于能力所限，设计尚有许多不足之处，恳请各位老师给予指教。