换挡拨叉加工工艺及钻Φ13.4孔夹具设计

0换挡拨叉

目录
目录1
引言3
1零件的工艺分析4
1.1零件图4
1.2工艺分析4
2毛坯的确定4
2.1零件毛坯制造形式4
2.1.1确定加工余量5
2.1.2毛坯基本尺寸5
2.2毛坯图5
2.3定位基准的选择6
3工艺路线方案确定6
4切削用量的计算8
5夹具设计23
5.1问题的提出23
5.2定位方案23
5.3定位元件24
5.4定位误差计算24
5.5夹紧机构设计24
参考文献27
致谢28

摘要
换挡叉它位于变速机构中主要起换档，和其他零件配合，在改变转速的时候承受轻微的载荷，所以加工时应该保证本零件的重要工作表面符合技术要求。对于零件而言，尽可能选择不加工表面作为粗基准。通过工艺分析寻找最科学经济的加工工艺方法来保证零件尺寸精度，同时有效的减少工件加工的基本时间和辅助时间提高零件的生产效率，轻劳动强度以及保证生产安全，提高产品零件的加工质量。本次设计中包括了对换挡叉零件图的分析，毛坯的选择，制订加工路线，刀具的选择，切削用量的计算，工艺文件的填写。
关键词：工艺分析加工路线切削用量

Abstract
The gear shifting plug is located in the gear shifting mechanism and is mainly engaged with other parts to bear a slight load when changing the rotation speed. therefore, the important working surface of this part should be ensured to meet the technical requirements during processing. As for parts, as far as possible, select non-machined surfaces as coarse benchmarks. Through process analysis, the most scientific and economic processing method can be found to ensure the dimensional accuracy of parts. at the same time, the basic time and auxiliary time for workpiece processing can be effectively reduced to improve the production efficiency of parts, reduce labor intensity, ensure production safety, and improve the processing quality of product parts. This design includes the analysis of the gear shifting and inserting parts drawing, the selection of blanks, the formulation of processing routes, the selection of cutting tools, the calculation of cutting parameters, and the filling of process documents.

Key words： Process analysis Machining route Cutting parameters

换挡拨叉毛坯

换挡拨叉毛坯1

钻夹具体

夹具装配图