网络教育学院本科生毕业论文（设计）题目：机床“羊角”拨叉加工工艺及孔加工夹具设计学习中心：广东江门奥鹏学习中心层次：专科起点本科专业：机械设计制造及其自动化年级：2009年秋季学号：091182411014学生：罗礼胜指导教师：王爽完成日期：2011年9月17日内容摘要本论文完成了对机床“羊角”拨叉加工工艺及孔加工夹具的设计。本论文完成了对机床“羊角”拨叉加工工艺及钻孔夹具的设计。在设计的前一部分，主要进行工艺卡的填写，流程如下：首先是分析零件基本特征；其次根据前面的分析来选择毛坯；再次设计工艺规程：包括制定工艺路线，选择基准面等；然后进行工序设计，即选择机床，确定加工余量，工序尺寸及毛坯尺寸，切削用量待参数；最后编制工艺文件。第二阶段，进行夹具设计。纵观整条工艺路线，结合难易程度和夹具本身的特色，选定孔加工工序进行夹具的总体装配和夹具体的设计。首先，结合零件在该工序中需要达到的各项技术要求，初步拟定工件的定位、夹紧方案；然后，根据夹具设计原则以及夹紧力和夹紧点的确定原则进行局部零部件和夹具体的设计最后，校核该夹具的精度。关键词：羊角拨叉；机械加工；工艺；工艺卡；切削；夹具设计目录内容摘要····························································································1引言······························································································31.1羊角拨叉的功用··············································································41.2设计任务·······················································································42零件工艺规程设计·············································································52.1产量的确定····················································································52.1.1生产类型的确定············································································52.1.2日生产量的确定············································································52.2毛坯的选择及毛坯图的绘制·······························································62.2.1毛坯的选择··················································································62.2.2毛坯-零件综合图的绘制方法····························································62.3定位基准的分析与选择·····································································62.3.1基准的概念··················································································72.3.2基准选择原则··································...
