**大学毕业设计
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摘 要
机械制造业的发展，依赖于机械制造的先进技术，以及市场的占有率。因此如何改
进加工工艺、提高加工精度、减少加工工时、创造性利用工装设备、节约成本，提高产
品的先进性和使用性，提高产品的市场竞争力，将是我们设计过程中的核心问题。本文
主要针对传统的双联滑移齿轮加工工艺路线进行研究和设计。其中包括传统的齿轮加工
刀具、工装设备以及内孔加工夹具的改进性设计，以提高 EQ140 变速箱二轴三档齿轮
加工效率和加工质量。
关键词：齿轮加工；节圆夹具；插齿刀；滚刀
ABSTRACT
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ABSTRACT
The development of machine manufacturing industry, the dependence is at the machine
manufacturing of forerunner technique, and the share of market. How therefore the
improvement process a craft, exaltation process accuracy, decrease process man-hour, create
sex exploitation work to equip have, economy cost, exaltation product of forerunner and usage,
exaltation product of market competition ability, will be us design core problem within process.
This time design main aim at tradition of the double be allied slippery move wheel gear to
process craft route to carry on research and design. The wheel gear which include a tradition
among them process the knife, work equip to have and inside the bore process tongs of
improvement design, and improve manufacturing quality and efficient of tow axis, three gears
of EQ140 truck’s gear-box.
Keywords: Gear processing; Festival round; jig Slotting tool; Hob
**大学毕业设计
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目 录
摘 要................................................................................................................................................................I
ABSTRACT....................................................................................................................................................II
第 1 章 绪论..............................................................................................................................................1
第 2 章 EQ140 变速箱二轴三档齿轮工艺分析 .....................................................................................3
2.1 零件分析...........................................................................................................................................3
2.1.1 零件的作用 .............................................................................................................................3
2.1.2 零件的工艺分析 .....................................................................................................................3
2.1.3 齿形加工工艺方案分析 .........................................................................................................3
2.2 齿轮工艺规程的制定.......................................................................................................................4
2.2.1 零件图分析 .............................................................................................................................4
2.2.2 确定毛坯画毛坯—零件和图 .................................................................................................4
2.2.3 加工余量、工序尺寸及偏差的确定 .....................................................................................5
2.2.4 定位基准选择 .........................................................................................................................6
2.2.5 加工经济精度和加工方法的选择 .........................................................................................7
2.2.6 加工顺序的安排 .....................................................................................................................7
2.2.7 其它工序的安排 .....................................................................................................................8
2.2.8 确定零件的加工工艺 .............................................................................................................8
2.2.9 计算与确定工序切削加工用量 .............................................................................................9
2.2.10 机床、刀具、夹具的选择 ...................................................................................................16
2.3 本章小结.........................................................................................................................................17
第 3 章 剃前齿轮滚刀设计....................................................................................................................18
3.1 剃前滚刀设计参数.........................................................................................................................18
3.2 确定留剃余量.................................................................................................................................18
3.3 滚刀旋向的确定.............................................................................................................................20
3.4 滚刀头数和容屑槽的确定.............................................................................................................21
3.5 滚刀全齿高.....................................................................................................................................21
3.6 滚刀法向齿厚.................................................................................................................................21
3.7 齿顶触角的计算.............................................................................................................................21
目 录
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3.7.1 被切齿轮齿根有效渐开线起点曲率半径的计算 ...............................................................21
3.7.2 剃前滚刀齿顶触角长度计算 ...............................................................................................22
3.7.3 触角高度计算 .......................................................................................................................23
3.7.4 触角凸出部分尺寸 ...............................................................................................................23
3.8 剃前滚刀齿根倒缘的计算.............................................................................................................23
3.8.1 倒缘部分的角度 ...................................................................................................................23
3.8.2 倒缘起始点到滚刀节线的距离 ...........................................................................................23
3.8.3 倒缘部分的尺寸 ...................................................................................................................24
3.9 齿顶圆弧半径和齿根圆弧半径.....................................................................................................24
3.10 剃前滚刀的基本尺寸................................................................................................................24
3.11 轴向齿形参数的计算................................................................................................................25
3.12 剃前滚刀的精度和主要技术条件的确定................................................................................25
3.13 本章小结....................................................................................................................................26
第 4 章 插齿刀设计................................................................................................................................27
4.1 被插齿轮的已知条件.....................................................................................................................27
4.2 插齿刀的设计.................................................................................................................................27
4.2.1 插齿刀的基本参数计算 .......................................................................................................27
4.2.2 前端面上的齿形尺寸计算 ...................................................................................................31
4.3 插齿刀设计的技术要求.................................................................................................................32
4.4 本章小结.........................................................................................................................................32
第 5 章 夹具设计....................................................................................................................................33
5.1 夹具综述.........................................................................................................................................33
5.1.1 确定设计方案 .......................................................................................................................33
5.1.2 特点及应用 ...........................................................................................................................33
5.1.3 定位方案 ...............................................................................................................................33
5.1.4 夹具工作原理 .......................................................................................................................33
5.2 定位滚柱的尺寸计算.....................................................................................................................34
5.3 夹具尺寸设计计算.........................................................................................................................37
5.4 本章小节.........................................................................................................................................40
第 6 章 总 结 ..........................................................................................................................................41
**大学毕业设计
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参考文献.........................................................................................................................................................42
致谢.................................................................................................................................................................42
