滑动叉的工艺规程及铣118上端面夹具设计
摘要
滑动叉是汽车后桥上的一个重要的零件,它具有传递扭矩、调整传动轴的长短及位置,从而使汽车在前进中获得动力,并使零件之间达到更好的配合。因此,对其进行设计和研究是非常有意义的。
本文主要研究滑动叉的工艺规程及铣118上端面夹具。设计之初,对加工零件进行全面的技术分析,从加工零件的材料到加工零件的形位公差,从加工成本到生产工艺,每一步都详细而认真作了规划。在拟订了工艺生产路线时,考虑零件的全部技术要求、生产的效率高低、生产的成本多少、生产劳动的强度等的,对各工序切削用量及切削时间进行计算。
专用铣床夹具设计的内容有定位方案、定位元件的选择;夹紧方案、夹紧元件的选择;夹具体、导向装置的选择;切削力和夹紧力的计算;定位误差的分析等。
关键词:滑动叉、工艺规程,118上端面、铣床夹具
Abstract
Slidi
ng fork is a
n importa
nt part o
n the rear axle of automobile. It ca
n tra
nsfer torque, adjust the le
ngth a
nd positio
n of the drive shaft, so that the automobile ca
n get power i
n adva
nce, a
nd make the parts better fit. Therefore, it is very mea
ni
ngful to desig
n a
nd research it. This paper mai
nly studies the tech
nological process of slidi
ng fork a
nd the fixture for milli
ng 118 upper e
nd face. At the begi
n
ni
ng of the desig
n, a comprehe
nsive tech
nical a
nalysis was carried out o
n the machi
ned parts, from the material of the machi
ned parts to the tolera
nce of the shape a
nd positio
n of the machi
ned parts, from the processi
ng cost to the productio
n process, each step was carefully pla
n
ned. Whe
n drawi
ng up the process productio
n li
ne, the cutti
ng parameters a
nd cutti
ng time of each process are calculated, taki
ng i
nto accou
nt all the tech
nical requireme
nts of parts, productio
n efficie
ncy, productio
n cost, productio
n labor i
nte
nsity a
nd so o
n. The desig
n of special milli
ng machi
ne fixture i
ncludes the selectio
n of positio
ni
ng scheme a
nd positio
ni
ng eleme
nt, the selectio
n of clampi
ng scheme a
nd clampi
ng eleme
nt, the selectio
n of clampi
ng body a
nd guidi
ng device, the calculatio
n of cutti
ng force a
nd clampi
ng force, a
nd the a
nalysis of positio
ni
ng error. Key words slidi
ng fork, process regulatio
n, 118 upper e
nd face, milli
ng fixture 目录 摘要I Abstract II 第一章绪论1 1.1本课题研究的目的及意义1 1.2机械加工工艺规程1 1.2.1机械加工工艺规程的概述1 1.2.2机械加工艺规程的作用1 1.2.3制定机械加工工艺规程的原则2 第二章滑动叉零件的分析3 2.1零件的作用3 2.2零件的分析3 2.2.1零件的工艺分析3 2.2.2零件结构分析4 2.2.3零件的技术要求分析4 2.2.4零件的组成表面4 2.2.5零件的技术要求5 2.2.6零件的形位公差5 第三章滑动叉工艺规程的设计6 3.1零件生产类型的确定6 3.2确定零件的材料及制造方式6 3.3选择加工的定位基准7 3.4加工工艺路线的选择、比较与确定7 3.4.1加工工艺路线方案一8 3.4.2加工工艺路线方案二8 3.4.3加工工艺路线的比较与确定8 3.5加工设备、加工刀具及量具的选用9 3.6各工序工步加工余量的计算10 3.7确定切削用量及基本工时11 第四章铣118上端面专用夹具设计22 4.1定位方案及定位元件的确定与选择22 4.1.1定位方案的确定22 4.1.2定位元件的选择22 4.2夹紧方案及元件的确定与选择23 4.2.1夹紧方案的确定23 4.2.2夹紧元件的选择23 4.3夹具体的确定23 4.4导向装置的确定24 4.5切削力和夹紧力的计算24 4.5.1切削力的计算24 4.5.2夹紧力的计算24 4.6定位误差的分析25 结论26 致谢27 参考文献28
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ng fork is a
n importa
nt part o
n the rear axle of automobile. It ca
n tra
nsfer torque, adjust the le
ngth a
nd positio
n of the drive shaft, so that the automobile ca
n get power i
n adva
nce, a
nd make the parts better fit. Therefore, it is very mea
ni
ngful to desig
n a
nd research it. This paper mai
nly studies the tech
nological process of slidi
ng fork a
nd the fixture for milli
ng 118 upper e
nd face. At the begi
n
ni
ng of the desig
n, a comprehe
nsive tech
nical a
nalysis was carried out o
n the machi
ned parts, from the material of the machi
ned parts to the tolera
nce of the shape a
nd positio
n of the machi
ned parts, from the processi
ng cost to the productio
n process, each step was carefully pla
n
ned. Whe
n drawi
ng up the process productio
n li
ne, the cutti
ng parameters a
nd cutti
ng time of each process are calculated, taki
ng i
nto accou
nt all the tech
nical requireme
nts of parts, productio
n efficie
ncy, productio
n cost, productio
n labor i
nte
nsity a
nd so o
n. The desig
n of special milli
ng machi
ne fixture i
ncludes the selectio
n of positio
ni
ng scheme a
nd positio
ni
ng eleme
nt, the selectio
n of clampi
ng scheme a
nd clampi
ng eleme
nt, the selectio
n of clampi
ng body a
nd guidi
ng device, the calculatio
n of cutti
ng force a
nd clampi
ng force, a
nd the a
nalysis of positio
ni
ng error. Key words slidi
ng fork, process regulatio
n, 118 upper e
nd face, milli
ng fixture 目录 摘要I Abstract II 第一章绪论1 1.1本课题研究的目的及意义1 1.2机械加工工艺规程1 1.2.1机械加工工艺规程的概述1 1.2.2机械加工艺规程的作用1 1.2.3制定机械加工工艺规程的原则2 第二章滑动叉零件的分析3 2.1零件的作用3 2.2零件的分析3 2.2.1零件的工艺分析3 2.2.2零件结构分析4 2.2.3零件的技术要求分析4 2.2.4零件的组成表面4 2.2.5零件的技术要求5 2.2.6零件的形位公差5 第三章滑动叉工艺规程的设计6 3.1零件生产类型的确定6 3.2确定零件的材料及制造方式6 3.3选择加工的定位基准7 3.4加工工艺路线的选择、比较与确定7 3.4.1加工工艺路线方案一8 3.4.2加工工艺路线方案二8 3.4.3加工工艺路线的比较与确定8 3.5加工设备、加工刀具及量具的选用9 3.6各工序工步加工余量的计算10 3.7确定切削用量及基本工时11 第四章铣118上端面专用夹具设计22 4.1定位方案及定位元件的确定与选择22 4.1.1定位方案的确定22 4.1.2定位元件的选择22 4.2夹紧方案及元件的确定与选择23 4.2.1夹紧方案的确定23 4.2.2夹紧元件的选择23 4.3夹具体的确定23 4.4导向装置的确定24 4.5切削力和夹紧力的计算24 4.5.1切削力的计算24 4.5.2夹紧力的计算24 4.6定位误差的分析25 结论26 致谢27 参考文献28
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