机床“羊角”拨叉加工工艺及φ14D4孔加工夹具设计.doc

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φ 14D4 孔加工夹具设计学****中心: 层次: 专业: 机械设计制造及其自动化年级: 学号: 学生: 田森指导教师: 完成日期: 大连理工大学网络教育学院毕业论文(设计)模板 1 内容摘要本论文完成了对机床“羊角”拨叉加工工艺及其上φ14D4 孔的加工夹具的设计。在设计的第一部分,主要进行工艺卡的填写。首先,根据图纸利用三维制图软件 solidworks ,绘制零件 3D模型,分析零件的结构类型、生产类型、毛坯选择等,其次确定加工类型、基准选择等工作,最后制定加工工艺路线,填写工艺卡片。第二阶段,进行夹具设计。夹具设计首先要保证零件的加工质量减少废品率, 其次要提高加工效率使经济效益最大化,最后应该能扩大设备的选择范围改善作业环境,降低劳动强度。纵观整条工艺路线,结合难易程度和夹具本身的特色, 选定φ14D4 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;工艺;夹具设计; solidworks ;效率; 大连理工大学网络教育学院毕业论文(设计)模板 2 目录内容摘要····························································································· 1 引言······························································································· 3 1设计任务说明··················································································· 4 羊角拨叉的功用············································································· 4 设计任务······················································································· 5 2零件工艺规程设计············································································· 6 产量的确定··················································································· 6 生产类型确定·············································································· 6 日生产量的确定··········································································· 6 毛坯的选择及毛坯图的绘制······························································ 7 毛坯的选择················································································· 7 毛坯-零件综合图的绘制方法··························································· 7 定位基准的分析与选择···································································· 8 基准的概念················································································· 8 基准选择原则·············································································· 9 定位基准的选择·····································