文档介绍：机械制造技术课程设计说明书设计题目: CA6140 车床拨叉 813003 零件的机械加工工艺规程及夹具设计学生: 学号: 班级: 指导教师: 大学工程学院机械系 201年月日目录序言------------------------------------------------------------------------------------------------1 1. 零件的工艺性分析---------------------------------------------------------------------------1 ---------------------------------------------------------------------------------1 ---------------------------------------------------------------------------1 ------------------------------------------------------------------------1 2. 确定毛坯制造方式和毛坯简图------------------------------------------------------------2 ------------------------------------------------------------------------------------2 确定毛坯尺寸公差和机械加工余量--------------------------------------------------2 ------------------------------------------------------------------------------3 3. 拟定拨叉工艺路线---------------------------------------------------------------------------3 ------------------------------------------------------------------------------3 ---------------------------------------------------------------------3 ---------------------------------------------------------------------------4 ---------------------------------------------------------------------------4 ---------------------------------------------------------------------------4 ------------------------------------------------------------------------------4 ---------------------------------------------------------------------------------5 4. 机械加工余量、工序尺寸及毛坯尺寸的确定-------------------------------------------5 5. 确定切削用量及基本工时------------------------------------------------------------------7 ×30面-----------------------------------------------------------------------------7 ×30面-----------------------------------------------------------------------------8 6. 夹具的设计------------------------------------------------------------------------------------9