1 机械制造基础技术基础课程设计 任务书 题目：设计“CA6140 车床 831008 拨叉”零件的机械加工工艺及工艺设备 姓名： 甲乙丙 班级： 130908 学号： ******** 指导老师： *** 学校： 五邑大学 时间： 2014 年 7 月 5 日 目录 一、零件分析··············································1 （一）零件的作用············································1 （二）零件的工艺分析··············································1 二、工艺规程设计··········································1 （一）确定毛坯的制造形式···································1 （二）基面的选择············································1 （三）制定工艺路线··········································2 （四）机械加工余量、工序尺寸及毛皮尺寸的确定············3 （五）确立切削用量及基本工时······························3 三、夹具设计·············································10 四、设计总结·············································11 附加： 机械加工工艺卡片·········································12 毛坯图···················································21 零件图···················································22 机构设计夹具装备图·······································23 机构设计夹具零件图·······································24 1 一、零件分析 （一）零件的作用 零件是CA6140 车床831008 拨叉。它位于车床变速机构中，主要起换挡，使主轴回转运...
