机械5

摘要 本文是对JZ-12L-06零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JZ-12L-06零件的一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铣床夹具。 关键词：JZ-12L-06，加工工艺，加工方法，工艺文件，夹具 Abstract This paper is o
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n, fixture 目录 摘要2 Abstract 3 目录4 1绪论6 2零件的分析5 2.1零件的工艺分析5 2.2零件的工艺要求5 3工艺规程设计6 3.1加工工艺过程6 3.2确定各表面加工方案6 3.2.1考虑因素6 3.2.2加工方案的选择7 3.3确定定位基准7 3.3.1粗基准的选择7 3.3.2精基准选择的原则8 3.4工艺路线的拟订8 3.4.1工序的合理组合8 3.4.2工序的集中与分散9 3.4.3加工阶段的划分10 3.4.4加工工艺路线方案的比较10 3.5零件的偏差，加工余量，工序尺寸及毛坯尺寸的确定12 3.5.1毛坯的结构工艺要求12 3.5.2零件的偏差计算12 3.6确定切削用量及基本工时（机动时间） 13 3.7时间定额计算及生产安排19 4铣端面设计21 4.1设计要求21 4.2夹具设计21 4.2.1定位基准的选择21 4.2.2切削力及夹紧力的计算21 4.3定位误差的分析22 4.4夹具设计及操作的简要说明22 总结23 参考文献24 致谢25