机械5

摘要 本篇说明书主要是对泵体零件的主要加工面与加工孔的步骤进行较详细的说明，例如在普通车床上采用一面两销的定位方式对此泵体的前端面和端面上的两孔进行加工。在减少成本和保证加工精度的基础上极大的保证泵体工艺规格的合理性。此次说明书的重点是对2-48H7的孔进行夹具设计，它采用了偏心车床夹具进行加工，不仅减少了夹紧定位的时间提高了生产效率，还保证了加工的精度。由于泵体大多由中小型企业所生产，我也是根据这些提出了较为经济的设计方案。 关键词:泵体夹具工艺 Abstract Thesis of this chapter is mai
nly ma
nual steps to the mai
n processi
ng surface machi
ni
ng hole pump parts of a more detailed descriptio
n, such as the fro
nt face of the pump a
nd let the bli
nd hole rotary gear "8" shape. Choose from a ma
nufacturi
ng rough eco
nomic aspects a
nd requireme
nts of machi
ne tools a
nd some special fixture selectio
n, I will co
nsider i
n reduci
ng costs a
nd e
nsuri
ng the basis of the machi
ni
ng accuracy of the e
normous size of the process to e
nsure that the pump is reaso
nable a
nd complete tooli
ng desig
n some ideas. The specificatio
n is focused o
n the holes 2- 48H7 fixture desig
n, which uses ecce
ntric lathe machi
ni
ng fixture,
not o
nly reduces the clampi
ng positio
n of time to improve productio
n efficie
ncy, but also to e
nsure the accuracy of processi
ng. Mostly due to the pump produced by small a
nd medium e
nterprises, a
nd I also made based o
n these more eco
nomical desig
n. Key word: Pump fixture process. 目录 摘要I Abstract II 1零件的分析1 1.1零件的功用分析1 1.2零件的工艺分析1 2确定毛坯画零件毛坯图2 2.1确定毛坯种类2 2.2确定毛坯尺寸及机械加工总余量2 2.3设计毛坯图3 2.4绘制毛坯图3 3选择加工方法，制定工艺路线4 3.1定位基准的选择4 3.2零件的表面加工方法4 3.3工序的集中与分散5 3.4工序顺序的安排5 3.4.1机械加工顺序5 3.4.2辅助工序5 3.5制定工艺路线6 3.7工序间加工余量、工序尺寸的确定9 3.8切削用量及基本时间的计算10 4夹具设计13 4.1确定夹具的结构方案13 4.2夹具体的设计13 致谢16