机械5

紧固螺栓加工工艺设计 摘要 机械加工工艺规程是指导车间生产的主要技术文件、生产准备和管理准备的重要资料、新建或扩建工厂和车间的基本依据、还便于交流与推广先进经验。正确的工艺规程可以稳定地保证产品的质量和获得较高的生产率经济效益、能使生产均衡顺利的进行。 本文给出的零件是紧固螺栓，紧固螺栓是一种很重要也很典型的轴类零件，主要起到传递运动和动力的作用。外圆表面设有键槽、圆柱孔及螺纹等等。通过对零件图纸的分析，培养自己树立正确的对产品的加工能力，完成加工及组装工艺。也可使自己进一步加深对所学理论的认识，学会运用所学知识去分析和解决一些实际问题。 本次设计对紧固螺栓的加工工艺规程进行了详细的分析。制定了加工紧固螺栓的机械加工工艺路线，详细计算了加工余量、切削用量、尺寸公差，确定各工序尺寸、工序加工余量、加工工时、机械加工三要素等，选择其加工设备。通过本设计掌握零件的加工过程分析、工艺卡片的编制和步骤。学会应用手册、标准、规范等资料。认识到工艺在机械制造中的重要性。了解刀具的选用规则，产品质量、精度、寿命等属性和节约材料，降低成本，最重要的是提高生产经验。 关键词：加工工艺、紧固螺栓、工艺路线、工序 ABSTRACT Machi
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ng, process 目录 摘要I ABSTRACT II 第1章紧固螺栓机械加工工艺规程设计3 1.1零件的作用、设计基准及技术要求3 1.1.1零件的作用3 1.1.2零件的设计基准3 1.1.3零件的组成表面及技术要求3 1.2零件的形状位置精度及主要加工表面尺寸4 1.2.1零件的形状位置精度4 1.2.2零件的主要加工表面尺寸4 1.3零件的机械加工工艺性、材质及热处理要求4 1.3.1零件的机械加工工艺性4 1.3.2零件的材质5 1.3.3零件的热处理要求5 1.4基准的选择及加工方案的选择与确定5 1.4.1基准的选择5 1.4.2加工方案确定6 1.5毛坯尺寸及工艺尺寸的确定7 1.5.1毛坯尺寸的确定7 1.5.2工艺尺寸的确定8 第2章机械加工机床、刀具及量具的选择10 2.1机械加工机床的选择10 2.2机械加工刀具的选择10 2.3机械加工量具的选择10 第3章确定切削用量及基本工时11 第4章结论18 致谢19 参考文献20