A1夹具装配图
摘要
拨叉的加工质量将直接影响机器的性能和使用寿命。本次设计旨在提高CA6140车床拨叉的加工效率,由此我们首先对拨叉的结构特征和工艺进行了仔细的分析,然后确定了一套合理的加工方案,加工方案要求简单,操作方便,并能保证零件的加工质量。在制定加工工艺规程的顺序如下:
1分析零件;
2选择毛坯;
3设计工艺规程:包括制定工艺路线,选择基准面等;
4工序设计:包括选择机床,确定加工余量,工序尺寸及毛坯尺寸,确定切削用量及计算基本工时等;
5编制工艺文件。
此外,为了提高劳动生产率,降低劳动强度,保证加工质量,需设计专用夹具,本次设计选择了第5道工序镗Ф50的孔的专用夹具设计,以满足加工过程的需要。
关键词:拨叉;工艺规程;夹具设计
Abstract
The processing quality of fork will directly affect the performance and service life of the machine. The purpose of this design is to improve the processing efficiency of the fork of CA6140 lathe. First, we have carefully analyzed the structural characteristics and technology of the fork, and then determined a reasonable processing scheme. The processing scheme is simple, easy to operate, and can ensure the processing quality of the parts. The order of formulating the processing procedure is as follows:
1. Analyzing parts;
2. Choose blank;
3. Design process regulations: including formulating process route and selecting datum level, etc.
4 process design: including selecting machine tools, determining processing allowance, process size and blank size, determining cutting parameters and calculating basic man-hour, etc.
5. Preparing process documents.
In addition, in order to improve labor productivity, reduce labor intensity, and ensure the quality of processing, special fixture should be designed. This design chooses the special fixture design of boring hole 50 in the fifth process to meet the needs of processing.
Key words: dialing fork; process specification; fixture design
目录
摘要I
Abstract II
前言1
1.零件分析1
1.1零件的作用1
1.2零件的工艺分析1
2.工艺规程设计2
2.1毛坯的制造形式2
2.2基准面的选择2
2.3制定工艺路线2
2.4机械加工余量、工序尺寸及毛坯尺寸的确定3
2.5确定切削用量及基本工时4
2.5.1工序二:粗、精铣孔Ф20mm、Ф50mm的下表面4
2.5.2工序三:粗、精铣孔Ф20mm、Ф50mm的上表面6
2.5.3工序四:钻、扩、铰、精铰Ф20mm的孔7
2.5.4工序五:粗、精镗Ф50 mm的孔12
2.5.5工序六:铣断14
2.5.6工序七:钻锥孔Ф8mm的一半Ф4mm 15
2.5.7工序八:钻Ф5mm的孔,攻螺纹M6 17
2.5.8工序九:铣缺口19
3.绘制零件图和编制工艺文件20
3.1绘制零件图20
3.2编制工艺文件21
4.夹具设计22
4.1确定定位方案,选择定位元件22
4.2确定导向装置22
4.3确定夹紧机构22
4.4确定其他装置22
4.5设计夹具体22
结论23
致谢24
参考文献25
A4零件图
三维零件图
A3毛坯图
A3镗套支架
A4压板
A4支撑板
工序2
工序3
工序4
工序5
工序6
工序7
工序8
工序9
加工过程卡
A1夹具体
夹具设计部分
设计所包含文件
字数统计
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