前钢板弹簧吊耳的加工工艺规程铣3mm槽夹具设计 摘要 本次设计是对前钢板弹簧吊耳零件的加工工艺设计。前钢板弹簧吊零件的主要加工表面是平面及孔。由加工工艺原则可知，保证平面的加工精度要比保证孔的加工精度容易。所以本设计遵循先面前孔的原则。并将孔与平面的加工明确划分成粗加工和精加工阶段以保证加工精度。基准选择以前钢板弹簧吊耳大外圆端面作为粗基准，以前钢板弹簧吊耳大外圆端面与两个工艺孔作为精基准。主要加工工序安排是先以前钢板弹簧吊耳大外圆端面互为基准加工出端面，再以端面定位加工出工艺孔。在前续工序中除个别工序外均用端面和工艺孔定位加工其他孔与平面。整个加工过程均选用专用机床。 关键词前钢板弹簧吊耳，加工工艺 ABSTRACT The desig
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ngs 目录 摘要I ABSTRACT II 1绪论1 2前钢板弹簧吊耳加工工艺规程设计2 2.1零件的分析2 2.1.1零件的作用2 1.1.2零件的工艺分析2 2.2工艺过程设计所应采取的相应措施3 2.3前钢板弹簧吊耳加工定位基准的选择3 2.3.1确定毛坯的制造形式3 2.3.2粗基准的选择3 2.3.3精基准的选择4 2.4工艺路线的制定4 2.4.1工艺方案一4 2.4.2工艺方案二4 2.4.3工艺方案的比较与分析5 2.5机械加工余量、工序尺寸及毛坯尺寸的确定5 2.6确定切削用量及基本工时（机动时间） 6 2.7时间定额计算及生产安排12 2.8本章小结14 3铣槽夹具设计15 3.1研究原始质料15 3.2定位基准的选择15 3.3切削力及夹紧分析计算16 3.4误差分析与计算17 3.5零、部件的设计与选用18 3.5.1定位销选用18 3.5.2夹紧装置的选用18 3.5.3定向键与对刀装置设计19 3.6夹具设计及操作的简要说明21 总结22 参考文献23 致谢24