数控铣加工工艺课程设计.docx

1、数控铣加工工艺课程设计 1、设计任务书 二、加工零件的图形三、零件的工艺分析和刀具选择四、走刀路线五、加工工艺卡片六、程序编制（1）图形结构分析:如图所示工件，外轮廓由矩形组成，有2个12的通孔.内轮廓由圆弧和直线组成，内轮廓内有镗孔（2）毛坯余量分析:毛坯尺寸为165mmX125mmX38mm,（3）结构工艺性分析数学模型无曲面重叠现象，曲面有异常的凸起和凹坑。3、工艺方案拟定通过查阅数控加工工艺教科书，得出各表面的加工方案如下：工件表面 10的铣刀铣外轮廓及中间异型的外轮廓 10的平刀铣型 加工2*12的孔 6mm钻头加工38的孔 12mm的球头铣刀加工槽 10mm的平头铣刀4、零件加工工

2、序分析（粗拟）第一道工序：铣平面。第二道工序：铣削加工外轮廓。第三道工序：铣削加工型腔。第四道工序：加工两个12孔。第五道工序：加工38的孔。第六道工序：加工槽。5、定位元件的选择根据工件的加工要求，吸盘定位，比较合理。可以看出工件只有厚度、平面度和垂直度要求较高，并不需要限制工件的全部自由度，只要限制X，Y方向的旋转和Z轴的移动，所以我们选择不完全定位原理。板料底面约束工件Z轴移动X、Y轴旋转三个自由度。X轴移动作为对刀自由度。四、走到路线1、2、仿真加工1.23.4.五、数控加工工序卡XXX机械厂数控加工工序卡片产品型号零件图号产品名称零件名称材料牌号45锻件毛坯种类半成品毛坯外形尺寸16

3、5mm*125mm*38mm备 注工序号工序名称设备名称设备型号程序编号夹具代号夹具名称冷却液车间1铣外轮廓加工中心工步号工步内容刀具号刀具路径刀具名称进给率（mm/min）下刀速率（mm/min）提刀速率（mm/min）主轴转速（r/min）备注1铣销外轮廓01外形铣削10mm平刀800100090035002铣38的孔02铣孔12mm球头铣刀30040080035003钻12的孔03钻孔6mm钻头35050080035004铣内表面04内表面铣削10mm平底铣刀20040090040005铣槽05槽加工10mm平底铣刀30060010003500676、程序编制%O0000(PROGRAM

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