机床“羊角”拨叉加工工艺及孔加工夹具设计
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： 2020年 秋季 学 号： 091182411014 学 生： 罗 礼 胜 指导教师： 王 爽 完成日期： 2020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，要紧进行工艺卡的填写，流程如下：第一是分析零件差不多特点；其次依照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。
第二时期，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。第一，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，依照夹具设计原那么以及夹紧力和夹紧点的确定原那么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 ······································································· 错误!未定义书签。 1.1 羊角拨叉的功用 ····················································· 错误!未定义书签。 1.2 设计任务 ······························································ 错误!未定义书签。 2 零件工艺规程设计 ···················································· 错误!未定义书签。 2.1 产量的确定 ··························································· 错误!未定义书签。 2.1.1 生产类型的确定 ··················································· 错误!未定义书签。 2.1.2 日生产量的确定 ··················································· 错误!未定义书签。 2.2 毛坯的选择及毛坯图的绘制 ······························································ 6 2.2.1 毛坯的选择 ················································································· 6 2.2.2 毛坯-零件综合图的绘制方法 ··································· 错误!未定义书签。 2.3 定位基准的分析与选择 ············································ 错误!未定义书签。 2.3.1 基准的概念 ················································································· 7 2.3.2 基准选择原那么 ··········································································· 8 2.3.3 定位基准的选择 ··········································································· 9 2.4 工艺路线的制定 ··········································································· 10 2.5 工艺卡的填写 ·············································································· 14 3 夹具设计 ························································································ 20 3.1 夹具的整体设计 ············································································· 20 3.1.1夹具设计分析 ·············································································· 20 3.1.2 夹具结构方案的确定 ···································································· 22 3.1.3 夹具的具体设计 ·········································································· 24 3.2 夹具的装配 ··················································································· 25 3.3 夹具的经济性分析 ·········································································· 26 结 论 ····························································································· 28 参考文献 ··························································································· 29
机床“羊角”拨叉加工工艺及孔加工夹具设计
