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CA6140普通车床床尾顶尖套盖的钻3-Ф9孔夹具设计及加工工艺规程含非标10张CAD图+说明书

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CA6140普通车床床尾顶尖套盖零件图A4

摘要
夹具是零件加工的夹紧装置，是加工零件的一种必不可少的装置。夹具利用率高，经济性好，对功能组件的使用和数量少。随着零件的尺寸变化，越来越多的夹具被淘汰了，因此，设计一套专用夹具是十分有必要的。在设计专用夹具时要考虑工件的定位方案，工件的夹紧方案和设计夹紧机构，夹具的其他组成部分，夹具的结构形式等。
本次设计的题目是CA6140普通车床床尾顶尖套盖机械加工工艺规程及夹具设计，根据老师给的图纸要求进行工艺设计和夹具设计，在掌握零件作用的基础上，对零件的工艺进行分析。针对设计给定的题目，设计里面主要对机床夹具进行设计。本夹具体是以保证加工精度，生产效率和便于工人操作为宗旨展开的设计。
设计之初我查阅相关数据及国内外关于机床夹具的文献，在看懂零件图的同时对零件的结构和工艺进行分析，明确粗基准和精基准的选择，确定零件的加工余量与毛坯的尺寸、从而确定零件的加工工艺过程、计算各工序的切削用量及工时。最终完成了本次设计所需的夹具。
关键词：床尾顶尖套盖；加工工艺；夹具设计；切削用量
Abstract
Jig is the clamping device for parts processing,which is an essential device for processing parts. The fixture has the advantages of high utilization rate, good economy, and less use and quantity of functional components. With the change of the size of parts, more and more fixtures are eliminated. Therefore, it is necessary to design a set of special fixtures. When designing the special fixture,we should consider the positioning scheme of theworkpiece, the clamping scheme of theworkpiece and the design of the clamping mechanism, other parts of the fixture, the structure of the fixture and so on.
The topic of this design is CA6140 ordinary lathe tail top cover machining process rules and fixture design, according to the teacher's drawing requirements for process design and fixture design, on the basis of grasping the role of parts, parts of the process analysis. For the design of a given topic, the design mainly focuses on the design of machine tool jig. The clip is specifically designed to ensure machining accuracy, production efficiency and ease ofworker operation.
At the beginning of the design, I consulted the relevant data and the domestic and foreign literature about the machine tool fixture, analyzed the structure and process of the partwhile reading the part drawing, made clear the choice of the rough datum and the precision datum, determined the machining allowance of the part and the size of the blank, thus determined the processing process of the part and calculated the cutting process of eachworking procedure. Dosage andworking hours. Finally, the fixture needed for the design is completed.
Keywords: top cover of bed end; processing technology; fixture design; cutting parameter
目录
摘要1
Abstract 2
第1章零件分析和毛坯设计4
1.1零件工艺分析及生产类型确定4
1.2毛坯类型及毛坯图设计5
第2章机械加工工艺规程设计7
2.1基准选择7
2.2工艺方案拟定7
2.3机械加工余量、工序尺寸及公差的确定8
2.4主要工序切削用量及时间定额的计算10
第3章专用夹具设计24
3.1工序内容及加工要求24
3.2定位基准24
3.3夹具结构设计及工作流程24
3.4设计定位方案应满足的要求24
3.5定位方案的确定24
3.6定位元件的确定25
3.7夹紧方案的确定25
3.8夹紧元件的确定25
3.9夹具体的设计26
3.10导向装置27
3.11计算切削力27
3.12计算夹紧力27
3.13定位误差28
第4章结论29
参考文献30