Mastercam实验报告要点.docx
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Mastercam实验报告要点.docx
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Mastercam实验报告要点
《计算机辅助制造》
实验
(1)报告
姓名:
谭金龙
学号:
0806111103
专业班级:
机械1107
中南大学机电工程学院机械制造及其自动化
实验内容
1.实验要求
如下图所示的零件图形,毛坯为165mm×123mm×40mm。
要求完成:
(1)在通用CAD/CAM系统(如:
Pro/Engineer,UG等)的支撑下,学生独
立完成零件的实体特征造型。
并由三维实体特征自动生成其二维零件工
作图。
(2)在CAD/CAM系统(Pro/E、MasterCAM等)的支撑下,学生独立完成
指定零件的数控加工编程和加工仿真。
包括:
加工零件图样分析。
定位基准选择及确定装夹方案。
编制数控加工工序卡,填写工艺卡。
根据零件的加工要求,合理选择刀具,填写刀具卡。
根据零件的加工工艺分析和V-60A立式加工中心的编程指令编写加
工程序,填写程序卡。
编写数控加工程序时应注意:
①走刀路线的合理安排;
②刀具补偿的合理使用。
加工仿真,验证数控加工程序的正确性。
(3)在虚拟数控机床环境下(如:
宇龙数控加工仿真系统),学生独立完成
指定零件的虚拟加工。
(4)在教师的指导下,学生分组在数控机床上完成零件的数控切削加工。
(5)独立编写实验报告。
2.加工设备及刀、夹、量具
加工设备:
V-60A立式加工中心
夹具:
机用平口虎钳
量具:
游标卡尺、深度尺
刀具:
φ63盘铣刀
φ5中心钻
φ20钻头
φ8.5钻头
M10丝锥
R6球铣刀
φ12键槽铣刀(粗)
φ12键槽铣刀(精)
φ16立铣刀
φ38可调镗刀
3.零件三维实体特征
零件比较简单,三维实体造型过程略,直接附加工完成图
4.二维零件工作图
5.零件加工工艺分析
零件毛坯尺寸165mm×123mm×40mm,零件外轮廓及各平面都有很高的加工精度要求,要分粗、精加工,以保证加工尺寸的要求。
零件的装夹采用平口钳装夹。
在安装工件时,要注意工件安装要放在钳口中间部位,安装台虎钳时,要对它的固定钳口找正,工件被加工部分要高出钳口,避免刀具与钳口发生干涉,安装工件时,注意工件上浮,不影响中间通孔的加工。
如图将工件坐标系G54建立在工件上表面,零件的对称中心处。
6编制数控加工刀具
表1V-60A立式加工中心数控加工刀具卡片
序号
加工工具
刀具号
刀具类型
主轴转速
S(rpm)
进给速度
F(mm/min)
刀具补偿号及补偿值
长度
(mm)
半径
(mm)
1
Ф63面铣刀
1
面铣刀
606
242.4
H1
D1
2
Ф16立铣刀
2
平底刀
2387
954.8
H2
D2
3
Ф12键槽铣刀
3
键槽铣刀
1200
240
H3
D3
4
Ф20钻头
4
钻头
1145
274.8
5
Ф38镗刀
5
镗刀
603
120.6
6
Ф5中心钻
6
中心钻
1145
57.25
7
Ф8.5钻头
7
钻头
1348
161.76
8
Ф10丝锥
8
右牙刀
2291
12500
9
7.编制数控加工工艺卡片
班级
机械1107
产品名称或代号
零件名称
零件图号
工序号
程序编号
夹具名称
实验装备
实验地点
工步号
工步内容
(mm)
刀具号
刀具规格
(mm)
主轴转速
(rpm)
进给速度
(mm/min)
背吃刀量
(mm)
备注
1
粗、精铣上表面
1
Ф63
606
242.4
2
2
粗、精铣台阶面
1
Ф63
606
242.4
5
3
粗铣外轮廓
2
Ф16
2387
954.8
15
4
挖槽(粗)
3
Ф12
1200
240
4
5
粗铣挖槽剩余部分
3
Ф12
1200
240
4
6
钻Ф20孔
4
Ф20
1145
247.8
7
扩孔到Ф37
2
Ф16
1790
537
8
镗孔到Ф38
5
Ф38
603
120.6
9
钻中心孔
6
Ф5
1145
57.25
10
啄Ф8.5孔
7
Ф8.5
1348
161.76
11
攻M10螺纹
8
Ф10
2291
12500
12
粗、精铣键槽
3
Ф12
1200
240
4
13
挖槽(精)
3
Ф12
1200
240
14
精铣挖槽剩余部分
3
Ф12
1200
240
15
精铣外轮廓
2
Ф16
2387
954.8
8.数控加工程序编制过程及关键问题的解决
(1)不同的平面加工要用到不同的刀具路径及不同的刀具,要注意结合要求合理选择。
(2)零件高度方向各平面尺寸要求较高,加工时要注意设置,要用尺寸链计算方法计算封闭环。
(3)挖槽加工时选择大凸台时要注意断点,不然选择不了外轮廓。
(4)先粗加工,注意切削参数留余量,精加工时再切除。
9.数控加工程序清单
%
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