MGA6020磨床磨架外壳工艺工装设计.doc

机械工程学院课程设计说明书设计题目:MGA6020磨床磨架外壳工艺工装设计课  程: 工艺工装实训  指导教师:         专  业: 机械制造与自动化班  级:        学  号:         姓  名:        评定成绩:          完成日期:        序言机械制造工艺学课程设计是在我们学完了大学的全部基础课、技术基础课以及大部分专业课后进行的。这是我们在进行毕业设计前对所学课程的一次综合性的复****也是一次理论联系实际的训练。因此它在我们三年的大学生活中占有重要的地位。就我个人而言,我希望能通过这次课程设计对自己未来将从事的工作进行一次适应性的训练,希望在设计中能锻炼自己分析问题、解决问题的能力,为自己今后参加祖国的建设打下一个良好的基础。由于能力有限,设计沿有不足之处,希望各位老师给予指教。目 录序言一、零件分析·····················································11、零件的作用···················································12、技术分析·····················································13、零件图·······················································2二、工艺设计·····················································31、确定毛坯的制造形式·········································32、基面的选择···················································33、制定工艺路线················································44、机械化加工余量、工序尺寸及毛坯尺寸确定················55、确定切削用量·········································6三、夹具设计·····················································91、自由度分析··················································92、定位基准的选择··············································93、夹紧设计····················································94、装配图·····················································10四、体会·························································11五、参考文献····················································11一、零件的分析(一)零件的作用题目所给定的零件是M6020A万能工具磨床上的磨架外壳,它位于机床工作台的左端。主要作用是加紧工件,属于机床上的辅助件。Φ90的圆柱面用来连接底,最终座安装在床身上。Φ68的孔用于安装滚动轴承并与空心轴相连,可连接顶锥来加紧工件。(二)技术分析(零件图见附图1)M6020A万能工具磨床的磨架外壳这个零件共有两组加工表面, 而这两组加工表面之间有一定的位置要求,现将这两组加工表面分述如下:1、以Φ90为中心的加工表面这一组加工表面包括Φ28h6的端面及外圆,与之平行的外圆及端面,Φ68的也及M12-7H孔端面,2×、3×1的切断槽及Φ70的环形槽及倒角;2、以Φ68为中心的加工表面这一组成加工表面包括铣Φ90两侧30宽,钻攻2×3-M5-7H和M10-7H也和2×M12-7H这两组加工表面之间有着一定的位置要求,主要是:(1)。(2)。3、(附图1)零件图由以上分析可知,对于这两组加工表面,我们可以先加工一组表面,然后借助于专用夹具进行另一表面的夹正,并保证它们之间有位置精度要求。二、工艺设计(一)确定毛坯的制造形式零件材料为HT15-33,考虑到磨床在运行中经常转动及运动,故零件在工作过程中经常承受高变及冲击性载荷,因此应该选用铸件,以便金属纤维尽量不断,保证零件工作可靠。由于零件年生产量4000件,已达到成批生产水平,故可采用成件毛坯中的机器造型,可以提