二○一○年六月
The Graduation Thesis for Bachelor's Degree
Gimbal sliding fork processing and special fixture design machine tools
Candidate：Zhang Ran Specialty：Vehicle Engineering Class：06-7
Supervisor：Professor. ShiMeiYu
Heilongjiang Institute of Technology
2010-062Harbin
摘 要
万向节滑动叉是汽车后桥上的一个重要的零件，设计从零件的分析、工艺规程设计、及加工过程中部分夹具的设计三个方面，研究了万向节滑动叉的设计与制造的全过程，尤其在工艺规程设计中，运用了大量的科学的加工理论及计算公式，确定了毛坯的制造形式，选择了定位基准，制定了工艺路线，确定了机械加工余量、工序尺寸和毛坯尺寸，最后确定了切削用量及基本工时。汽车底盘传动轴上的万向节滑动叉，它位于传动轴的端部。主要作用一是传递扭距,使汽车获得前进的动力；二是当汽车后桥钢板弹簧处在不同的状态时，由本零件可以调整传动轴的长短及其位置。零件的两
0.027个叉头部位上有两个Φ39??0.010 mm的孔，用以安装滚针轴承并与十字轴相连，起万向
联轴节的作用。零件Φ65mm外圆内为Φ50mm花键孔与传动轴端部的花建轴相配合，用于传递动力之用。
在机械制造的机械加工、检验、装配、焊接和热处理等冷、热工艺过程中，使用着大量的夹具。所谓夹具就是一切用来固定加工对象，使之占有正确位置，接受施工或者检测的装置。在机械制造中采用大量的夹具，机床夹具就是夹具中的一种。它装在机床上，使工件相对刀具与机床保持正确的相对位置，并能承受切削力的作用。
夹具是机械加工不可缺少的部件，在机床技术向高速、高效、精密、复合、智能、环保方向发展的带动下，夹具技术正朝着高精、高效、模块、组合、通用、经济方向发展。专用夹具是指专为某一工件的某道工序的加工而专门设计的夹具，具有结构紧凑，操作迅速、方便等优点。专用夹具通常由使用厂根据要求自行设计和制造，适用于产品固定且批量较大的生产中。
关键词： 万向节滑动叉；工艺路线；加工余量；工序尺寸；夹具；设计
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ABSTRACT
The universal joint glide fork is on automobile rear axle of car important components, it has the transmission torque, adjusts the driv e shaft the function, thus causes the automobile to obtain the power in the advance, and enables between the components to achieve a better coordin
This article from components analysis, craft specification design, and in processing process partial jig design three aspects, elaborated the universal joint glide forks the design and the manufacture entire process, in the technological process design, we has especially utilized the massive science processing theory and the formula, had determined the semifinished materials manufacture form, has chosen the basic plane, formulated the craft route to determine the machining allowance, the working procedure size and the semifinished materials size, finally have determined the cutting specifications and the basic man-hour
Assigns the components are on the liberation trademark motor car chassis drive shaft universal joint glide fork, it is located the drive shaft the nose.Mainly affects one transmits the pitch of strand, causes the automobile to obtain the advance the power; Two is when the automobile rear axle of car spring occupies the different condition, may adjust the drive shaft by this components the length and the position.In the components two jaw spot has two holes, with installs rolls the real bearing and is connected with the cross axle, plays the rotary shaft coupling role.In the components Φ 65mm outer annulus constructs the axis for Φ the 50mm flower key hole and the drive shaft nose flower to coordinate, to use in transmitting using of the power
Keyword ：Joint sliding fork design and production; technological process; allowance for finish; working procedure finish size; cutting
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目 录
摘要 ………………………………………………………………………………………Ⅰ Abstract ??????????????????????????????Ⅱ 第1章 绪论?????????????????????????????1
1.1 选题的依据及意义??????????????????????2 1.2 国内外研究概况及发展趋势?????????????????2
1.3 研究内容????????????????????????????5
第2章 零件的分析??????????????????????6
2.1零件的作用??????????????????????????6 2.2零件的工艺分析?????????????????????????6 2.3结构分析??????????????????????????6 2.4加工表面的技术要求分析?????????????????????7 2.5表面处理内容及作用???????????????????????7 2.6本章小结??????????????????????????7
第3章 工艺规程设计?????????????????????????9
3.1工艺要求??????????????????????????9 3.2技术依据??????????????????????????9 3.3生产类型的确定?????????????????????????9 3.4确定毛坯的制造形式???????????????????????9 3.5确定基面??????????????????????????9 3.6制定工艺路线??????????????????????????10 3.7机械加工余量、工序尺寸及毛坯尺寸的确定???????????13 3.8确定切削用量及基本工时????????????????????16 3.9本章小结??????????????????????????28
第4章 粗铣Φ39二孔的两个端面夹具设计???????????29
4.1问题的指出??????????????????????????29 4.2夹具设计??????????????????????????29 4.3夹具设计及操作的简要说明????????????????????31 4.4本章小结??????????????????????????32
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第5章 镗Φ39孔的夹具设计???????????????????33
5.1问题的指出??????????????????????????33 5.2夹具设计??????????????????????????33 5.3家具设计及操作的简要说明??????????????????35 5.4本章小结??????????????????????????35
结论?????????????????????????????????36 参考文献 ??????????????????????????????37 致谢?????????????????????????????????38 附录A?????????????????????????????????39 附录B?????????????????????????????????45
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