机械5

三孔连杆零件机加工工艺设计（含铣削三孔端面的铣床夹具设计） 摘要 连杆是机械应用领域中常用的部件之一。这设计主要介绍了普通连杆的加工工艺及其夹具设计。主要内容有普通连杆的作用、选材、毛坯的制造方法、连杆的技术要求、加工工艺路线的制定、加工设备的选择，刀具、量具，切削用量的选择计算等，并设计出一套加工连杆的的专用夹具，最终达到零件的技术要求。通过制定连杆加工工和设计夹具为工人加工连杆提供了依据。而我要设计的三孔连杆工艺规程的设计是从零件图开始对零件的加工工艺进行了分析，并通过查表、计算对毛坯材料、制造方法等进行选择确定。然后根据定位基准的选择原则和所要求的加工精度，确定加工基准和加工方法。并最终确定加工工艺路线。参阅有关技术手册计算确定三孔连杆的机械加工余量、工序尺寸和毛坯尺寸并绘制出了毛坯图，确定加机床和工艺装备,计算其相关加工工序的切削用量并制作了加工工序卡片。最后，根据加工要素设计了专用夹具，以便加工合格的三孔连杆产品。 关键词：三孔连杆；加工工艺；工装设计 Abstract Li
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nk special fixture, a
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nd produced a card. Fi
nally, accordi
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nk; processi
ng tech
nology fixture desig
n 目录 摘要2 引言5 1绪论6 2工艺设计7 2.1机械加工工艺过程基本知识7 2.2机械加工工艺设计的内容8 2.3零件分析9 2.4零件毛坯的分析9 2.5工艺过程设计11 2.6工艺路线的拟定11 2.7切削计算过程14 2.7.1工序50 14 2.7.2工序60 15 2.7.3工序70 16 2.7.4工序80 18 2.7.5工序90 20 2.8本章小结21 3铣床夹具设计22 3.1夹具的基本知识22 3.2定位原理及方案分析25 3.3定位元件选择27 3.4夹紧元件的选择28 3.5夹紧力的计算28 3.6误差的计算29 3.7本章小结30 总结33 致谢34 参考文献35