输出轴机械加工工艺规程制订及钻床夹具设计103ф20孔.docVIP

毕业设计说明书 设 计 题 目输出轴机械加工工艺规程制订 及钻床夹具设计(10×ф20孔) 学 生 姓 名 班 级 机制专科(2)班 学 号 1101030220 ______ 指 导 教 师 教 研 室 主 任 完 成 日 期 2013.11.27 目　　　　录 第一节 任务要求····················································1 第二节 摘要························································2 第三节 零件分析 一、零件的功用分析···············································3 二、零件的工艺分析···············································3 第四节 机械加工工艺规程制订 一、毛坯的确定···················································4 二、定位基准的选择···············································4 三、工艺的集中和分散考虑·········································5 四、制定工艺路线··················································6 五、确定加工余量及毛坯尺寸·······································6 1) 确定加工余量················································6 2) 确定毛坯简图················································10 六、工序设计······················································11 七、确定切削用量·················································12 第五节 夹具设计 一、接受设计任务，明确加工要求··································17 二、切削力与夹紧里的计算········································18 三、对称精度的分析··············································19 四、夹具方案的确定··············································20 第六章 设计小结···················································21 参考文献··························································22 致谢　····························································23 第一节 任务要求 图一 图一所示是输出轴简图。毛坯材料为45钢中批量生产，采用通用机床进行加工。热处理方式为调质，处理后硬度要求为200-230HBW。本次课程任务要求是完成该零件的机械加工工艺设计及加工10×ф20孔钻床夹具设计。 摘　　　　要 ? 机械制造技术基础毕业设计所选定的题目为输出轴零件的加工工艺及夹具设计。完成了对输出轴从零件毛坯到零件成品的加工过程分析和工艺安排。包括零件各工作表面的加工选择，机床、刀具、定位、夹紧；并对其中某些关键加工工序做了夹具设计，由于知识和经验所限，设计会有许多不足之处，所以恳请老师给予指导。 关键词：输出轴；加工工艺；夹具设计； ?? Abstract? Machinery?manufacturing?industry?on?the?world?economy?plays?an?important?role,?and?the?machinin