数控铣加工工艺课程设计.docx
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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φ12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φ10的铣刀
铣外轮廓及中间异型的外轮廓φ10的平刀铣型
加工2*φ12的孔φ6mm钻头
加工φ38的孔φ12mm的球头铣刀
加工槽φ10mm的平头铣刀
4、零件加工工序分析（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φ12孔。
第五道工序：
加工φ38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.
2
3.
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
165mm*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
Φ10mm平刀
800
1000
900
3500
2
铣φ38的孔
02
铣孔
Φ12mm球头铣刀
300
400
800
3500
3
钻φ12的孔
03
钻孔
Φ6mm钻头
350
500
800
3500
4
铣内表面
04
内表面铣削
Φ10mm平底铣刀
200
400
900
4000
5
铣槽
05
槽加工
Φ10mm平底铣刀
300
600
1000
3500
6
7
6、程序编制
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