对于螺纹孔的铣削加工,和外螺纹相似,只不过下刀点在孔中心。可以从孔上方向下螺旋铣削,也可以从螺纹孔底部向上铣削。只不过旋转的方向正好相反。先看图纸:
需要编制的程序包括:铣削螺纹底孔,倒内外倒角,铣削内沟槽,铣削螺纹。
一、使用D10立铣刀分层铣削圆形腔
毛坯如下:
参考程序:
G90G54G40G1Z100F1000M03S1500
G1X0Y0
Z5
#4=-5
WHILE[#4GE-25]DO1
#1=26.5
#2=5
G1Z#4F50
#3=0.8*2*#2
WHILE[#3LE[#1-#2]]DO2
G1X#3F500
G3I-#3
#3=#3+0.6*2*#2
END2
#3=#1-#2
G1X#3
G3I-#3
G1X0
#4=#4-5
END1
G1Z5F200
Z100F1000
M5
M30
仿真结果:
二、铣削内外倒角
内孔倒角参考程序:
G90G54G40G1Z100F1000M03S1500
G1X0Y0
Z5
G1Z-4F50
G1X24.5F300
G2I-24.5
G1X0
G1Z5F200
Z100F1000
M5
M30
外圆柱倒角参考程序:
G90G54G40G1Z100F1000M03S1500
G1G40X50Y0
Z5
G1Z-4F50
G1X42F300
G2I-42
G1X50
G1Z5F200
Z100F1000
M5
M30
仿真结果:
三、铣削内部螺纹退刀槽
参考程序:
G90G54G40G1Z100F1000M03S1500
G1X0Y0
Z5
G1Z-25F50
G10L12P1R6
G1G41X28D01F300
G3I-28
G1G40X0Y0
G1Z5F200
Z100F1000
M5
M30
仿真结果:
四、铣削螺纹
A.使用圆弧指令铣削螺纹,使用G2指令铣削,从上到下,则铣削右旋螺纹,参考程序如下:
G90G54G40G1Z100F1000M03S1500
G0X30Y0
Z3
#1=17.7
#2=1.5
G1X#1F300
WHILE[#2GE-24]DO1
G2I-#1Z#2
#2=#2-1.5
END1
G1X0Y0
G1Z5F200
Z100F1000
M5
M30
程序中,#1=17.7,在单件试切时要从小往大逐渐增加,使用螺纹塞规测试螺纹孔,仿真结果如下:
也可以使用另外一种方法来编制螺纹加工宏程序,就是利用圆的参数方程,把整圆划分为无数小段直线,并且在走圆过程中,Z向相应递减,逐步插补处螺旋线。从上向下加工中,自变量角度#1要逐步递减,这样才能加工出右旋螺纹。参考程序如下:
G90G54G40G1Z100F1000M03S1500
G0X30Y0
Z1.5
#1=0
#4=17.7
#5=1.5
WHILE[#1GE-5760]DO1
#6=#4*COS[#1]
#7=#4*SIN[#1]
#5=#5-1.5/360
G1X#3
G1X#6Y#7Z#5F2000
#1=#1-1
END1
G1X0Y0
G1Z5F200
Z100F1000
M5
M30
特别声明:以上内容(如有图片或视频亦包括在内)为自媒体平台“网易号”用户上传并发布,本平台仅提供信息存储服务。
Notice: The content above (including the pictures and videos if any) is uploaded and posted by a user of NetEase Hao, which is a social media platform and only provides information storage services.