机械5

摘要 在“一带一路”的利好形势下，国内的机械加工以及制造业发展飞速，无论是加工效率还是加工精度均进入快车道。非标零件也越来越多，保证其加工精度和生产效率的利器之一就是夹具的设计和制造，在对其进行夹具设计之前还需对其进行加工工艺规程的设计和确定。因此，本次设计主要对机械加工工艺规程以及专用夹具进行分析和设计。本次设计以C615车床进给箱体作为研究对象，该零件是液压系统上重要的零件之一，保证其正常的工作，实现液压系统运动和动力的输出等。 在对机械加工工艺规程设计之前，完成前期的调研掌握设计的基础知识，把握设计的重点、难点以及设计方向等。完成零件用途的分析、对零件材料进行特性分析，依据任务书和零件结构，选择较为合适的制造方式以及生产类型。完成工艺路线和装备的选取，计算主要的加工参数，填写工艺卡和工序卡等。专用夹具设计设计出了：钻床夹具，钻攻前端面4XM8螺纹通。主要设计定位方案、夹紧方案；选取了定位元件和夹紧元件；设计了夹具体；选择了导向装置并完成相应的计算和分析等 关键词：C615车床进给箱体；加工工艺；专用夹具；工艺路线；钻床夹具 Abstract U
nder the favorable situatio
n o
ne belt,o
ne road,the domestic machi
ni
ng a
nd ma
nufacturi
ng i
ndustryis developi
ng rapidly.Both processi
ng efficie
ncya
nd machi
ni
ng accuracyhave e
ntered the fast la
ne.There are more a
nd more
no
n-sta
ndard parts,o
ne of the sharp tools to e
nsure the machi
ni
ng accuracya
nd productio
n efficie
ncyis the desig
n a
nd ma
nufacture of fixture.Before the fixture desig
n,it is
necessaryto desig
n a
nd determi
ne the processi
ng procedure.Therefore,this desig
n mai
nlya
nalyzes a
nd desig
ns the machi
ni
ng process specificatio
n a
nd special fixture.The desig
n of c615 lathe feed boxas the research object,the part is o
ne of the importa
nt parts of the hydraulic system,to e
nsure its
normalwork,realize the hydraulic system moveme
nt a
nd power output. Before the desig
n of machi
ni
ng process specificatio
n,complete the prelimi
naryresearch,master the basic k
nowledge of desig
n,grasp the keypoi
nts,difficulties a
nd desig
n directio
n of desig
nplete the a
nalysis of the use of parts,a
nalyze the characteristics of parts materials,a
nd select the more appropriate ma
nufacturi
ng methods a
nd productio
n types accordi
ng to the task book a
nd parts structureplete the selectio
n of process route a
nd equipme
nt,calculate the mai
n processi
ng parameters,fill i
n the process card a
nd process card,etc.Special fixture desig
n: drilli
ng machi
ne fixture,drilli
ng a
nd tappi
ng fro
nt e
nd 4xm8 thread through.It mai
nlydesig
ns the positio
ni
ng scheme a
nd clampi
ng scheme; selects the positio
ni
ng eleme
nt a
nd clampi
ng eleme
nt; desig
ns the specific clamp; selects the guidi
ng device a
nd completes the correspo
ndi
ng calculatio
n a
nd a
nalysis Keywords: c615 lathe feed box; processi
ng tech
nology; special fixture; process route; drilli
ng fixture 目录 摘要1 Abstract 2 第1章绪言1 第2章计算生产纲领、确定生产类型2 2.1生产纲领2 2.2生效率分析2 2.3生产类型2 第3章零件工艺的分析4 3.1零件的工艺分析4 3.2确定毛坯的制造形式4 3.3 C615车床进给箱零件图零件的结构工艺性4 第4章拟定C615车床进给箱加工的工艺路线5 4.1定位基准的选择5 4.1.1精基准的选择5 4.1.2基准的选择5 4.2加工路线的拟定5 第5章机械加工余量的确定7 第6章确定切削用量及基本工时8 第7章钻床夹具设计22 7.1问题的提出22 7.2定位基准的选择22 7.3定位误差分析22 7.4切削力的计算与夹紧力分析23 7.5钻套设计23 7.6夹具设计及操作简要说明25 结论26 参考文献27