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II Abstract 1 第1章序言4 第2章轴承座的加工工艺规程设计5 2.1零件的分析5 2.1.1零件的作用5 2.1.2零件的工艺分析5 2.2确定生产类型6 2.3确定毛坯6 2.3.1确定毛坯种类6 2.3.2确定铸造加工余量及形状6 2.3.3绘制铸造零件图6 2.4工艺规程设计7 2.4.1选择定位基准7 2.4.2制定工艺路线7 2.4.3选择加工设备和工艺设备8 2.4.4机械加工余量、工序尺寸及公差的确定9 2.5确定切削用量及基本工时9 2.5.1粗铣、精铣左端面9 2.5.2铣右侧斜面13 2.5.5粗镗、精镗47、40孔14 2.5.6钻铰12孔15 2.5.7钻3хM6螺纹孔、M4螺纹孔底孔16 2.5.8攻丝3хM6螺纹孔、M4螺纹孔17 2.6本章小结18 第3章铣面夹具设计19 3.1设计要求19 3.2夹具设计19 3.2.1定位基准的选择19 3.2.2切削力及夹紧力的计算19 夹具的夹紧装置和定位装置[1] [2] 20 3.3定位误差的分析22 3.4夹具设计及操作的简要说明22 结论23 参考文献24 致谢25