机械5

轴承座加工工艺及夹具设计 摘要 本文是对轴承座零件加工应用及加工的工艺性分析，主要包括对零件图的分析、毛坯的选择、零件的装夹、工艺路线的制订、刀具的选择、切削用量的确定、加工工艺文件的填写。选择正确的加工方法，设计合理的加工工艺过程。此外还对轴承座零件的两道工序的加工设计了专用夹具. 机床夹具的种类很多，其中，使用范围最广的通用夹具，规格尺寸多已标准化，并且有专业的工厂进行生产。而广泛用于批量生产，专为某工件加工工序服务的专用夹具，则需要各制造厂根据工件加工工艺自行设计制造。本夹具设计的主要内容是设计轴承座内孔端面铣床夹具和压盖安装孔钻床夹具设计。 关键词：轴承座，加工工艺，加工方法，工艺文件，夹具 Abstract This article is for the beari
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n, fixture 目录 摘要I Abstract II 第1章序言1 第2章轴承座的加工工艺规程设计2 2.1零件的分析2 2.1.1零件的作用2 2.1.2零件的工艺分析2 2.2确定生产类型3 2.3确定毛坯3 2.3.1确定毛坯种类3 2.3.2确定铸造加工余量及形状3 2.3.3绘制铸造零件图3 2.4工艺规程设计4 2.4.1选择定位基准4 2.4.2制定工艺路线4 2.4.3选择加工设备和工艺设备5 2.4.4机械加工余量、工序尺寸及公差的确定6 2.5确定切削用量及基本工时6 2.5.1粗铣、精铣左端面6 2.5.2铣右侧斜面10 2.5.5粗镗、精镗47、40孔11 2.5.6钻铰12孔12 2.5.7钻3хM6螺纹孔、M4螺纹孔底孔13 2.5.8攻丝3хM6螺纹孔、M4螺纹孔14 2.6本章小结15 3镗孔夹具设计16 3.1研究原始质料16 3.2定位、夹紧方案的选择16 3.3切削力及夹紧力的计算16 3.4误差分析与计算18 3.6夹具设计及操作的简要说明19 结论20 参考文献21 致谢22