112-389固定板零件机械加工工艺编制及夹具设计 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。 此次设计是对112-389零件的加工工艺和夹具设计，其零件为锻件，具有体积小，零件复杂的特点，由于面比孔易加工，在制定工艺规程时，就先加工面，再以面为基准来加工其它，其中各工序夹具都采用专用夹具，本次设计的专用夹具是对2-M4螺纹孔深8钻床夹具进行研究。 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：112-389零件；加工工艺；2-M4；钻床夹具 Abstract Clamps are parts of the clampi
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ng fixture 目录 摘要I Abstract II 第1章前言- 5- 1.1机床夹具的概述- 5- 1.2机床夹具的组成及分类- 5- 1.2.1机床夹具的组成- 5- 1.2.2机床夹具的分类- 5- 1.3机床夹具的发展方向- 6- 1.4机床夹具在机械加工中的作用- 7- 1.5夹具设计的特点和基本要求- 7- 第2章零件的分析- 8- 2.1零件的作用- 8- 2.2零件的工艺分析- 8- 2.2.1零件的组成表面- 8- 2.2.2零件的技术要求- 8- 第3章零件工艺规程的设计- 9- 3.1零件生产类型的确定- 9- 3.2确定零件的材料及制造方式- 9- 3.3选择加工的定位基准- 9- 3.4加工工艺路线的制定- 10- 3.5加工方法、加工刀具及量具的选用- 11- 3.6各工序工步加工余量的计算- 12- 3.7确定切削用量及基本工时- 14- 第4章专用夹具设计- 30- 4.1定位方案及定位元件的确定与选择- 30- 4.1.1定位方案的确定- 30- 4.1.2定位元件的确定- 31- 4.2夹紧方案及装置的确定与选择- 31- 4.2.1夹紧方案的确定- 31- 4.2.2夹紧元件的确定- 31- 4.3夹具体的确定- 31- 4.4导向装置的确定- 32- 4.5钻削力的计算- 32- 第5章结束语- 33- 参考文献- 34- 答谢辞- 35-