手工编程问答与练习题答案修改Word格式.docx
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手工编程问答与练习题答案修改Word格式.docx
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简化零件的数控加工编程,使数控程序与刀具半径和刀具长度尽量无关,编程人员按照零件的轮廓形状进行编程,在加工过程中,CNC系统根据零件的轮廓形状和使用的刀具数据进行自动计算,完成零件的加工。
6.如下图所示,刀具起点为编程原点O,按“O→A→B→C→D→E:
顺序运动,写出A、B、C、D、E各点的绝对坐标、增量坐标值(所有点均在XOY平面内)。
绝对坐标增量坐标
A点(-10,-10)(-10,-10)(相对于O点)
B点(-20,5)(-10,15)
C点(-20,15)(0,10)
D点(15,15)(35,0)
E点(25,-20)(10,-35)
7、在90×
90×
10的有机玻璃板上铣一个“凹”形槽(铣至如下图所示尺寸),槽深未注园角R4,铣刀直径为8。
试编程。
(编程坐标原点设在有机玻璃板的左下角,编程过程中不用刀具半径补偿功能。
)
%
O0001;
N0010G92X0Y0Z100.S1500.M03;
N0020G00Z2.;
N0030X24.Y24.;
N0040G01F60.;
N0050X66.;
N0060Y27.;
N0070X24.;
N0080Y66.;
N0090X66.;
N0100Y63.;
N0110X30.;
N0120Y27.;
N0130G00Z100.;
N0140X0Y0
N0150M02;
8、用直径为6铣刀铣出下图所示的三个字母,试编程。
(编程坐标原点设在平板的左下角,编程过程中不用刀具半径补偿功能。
O0002;
N0030X15.Y35.;
N0040G01Z-2.F60.;
N0050X45.;
N0060G03X45.Y55.I0J10.;
N0070G01X15.;
N0080Y15.;
N0090X45.;
N0100G03X45.Y35.I0J10.;
N0110G00Z2.;
N0120X110.Y35.;
N0130G01Z-2.F60.;
N0140G03X110.Y35.I-20.J0;
N0150G00Z2.;
N0160X125.Y25.;
N0170G01Z-2.F60.;
N0180G03X135.Y15.I10.J0;
N0190G01X155.;
N0200G03X155.Y35.I0J10.;
N0210G01X135.;
N0220G02X135.Y55.I0J10.;
N0230G01X155.;
N0240G02X165.Y45.I0J-10.;
N0250G00Z100.;
N0260X0Y0;
N0270M02;
9、铣出下图(a)、(b)所示内、外表面,刀具直径为10,采用刀具半径补偿指令编程。
(编程坐标原点设在零件的中心)
外轮廓加工程序:
O0003;
N0030X-55.Y-45.;
N0040G01Z-5.F50.;
N0050G42D01G01X-40.Y-30.;
N0060X40.;
N0070Y30.;
N0080X-40.;
N0090Y-30.;
N0100G40G01X-55.Y-45.;
N0110G00Z100.;
N0120X0Y0;
N0130M02;
内轮廓加工程序:
O0004;
N0010G92X0Y0S1500.M03;
N0030G01Z-5.;
N0040G41D01G01X40.;
N0050Y22.;
N0060G03X32.Y30I-8.J0;
N0070G01X-32.;
N0080G03X-40.Y22.I0J-8.;
N0090G01Y-22.;
N0100G03X-32.Y-30.I8.J0;
N0110G01X32.;
N0120G03X40.Y-22.I0J8.;
N0130G01Y0;
N0140G01G40X0;
N0050G00Z100.;
N0160M02;
10、如下图所示,精加工五边形外轮廓与园柱内轮廓,每次切深不超3mm,刀具直径为8,用刀具半径补偿和循环指令编程。
(编程坐标原点设在零件的中心,编程指令采用天津三英数控机床指令)
P0005;
N0010G92X0Y0Z100S1500M03
N0020G00Z2
N0030X-80Y-55
N0040G42G01Y-40D01F50
N0050G25G91G01Z-3F60
N0070
N0080
N0090
N0100
N0110
N0120G90G00Z2
N0130X25Y0
N0140G25
N0150G91G01Z-3F60
N0160G03X0Y0I-25J0
N0170G90G00Z3
N0180G40G00X0Y0
N0190G00Z100
N0200M02
11、在孔加工循环中G98和G99有何区别
G98:
孔加工循环结束后刀具是返回起始点B;
G99:
孔加工循环结束后刀具是返回参考平面R。
12、如下图所示为一个较为复杂的平面零件,材料为CY12,试编程写其数控加工程序,要求如下:
(1)定加工方案;
(2)选择刀具;
(3)采用镜像加工简化编程
(编程坐标原点设在零件的中心,编程指令采用华中Ⅰ型铣削数控系统)
解:
刀具的选择:
T01:
14铣刀加工四个槽
T02:
14钻头加工四个14的孔
T03:
18钻头加工18的孔
T04:
33钻头加工33的孔
T05:
10铣刀加工加工其它部分
加工方案:
钻头钻孔铣刀铣槽加工加工其它部分(镜像加工)
主程序
O0006;
N0010G92X0Y0;
N0020S500M03T02;
N0030G91G00;
N0040G98G81F150;
N0050;
N0060;
N0070X140;
N0080G80G90X0Y0;
N0090G00M05;
N0100S500M03T03;
N0110G00;
N0120G98G81F150;
N0130G80M05;
N0140S500M03T04;
N0150G00;
N0160G98G81F150;
N0170G80M05;
N0180S800M03T01;
N0190G00;
N0200X0;
N0210G01;
N0220;
N0230G00Z2;
N0240Y0;
N0250G01;
N0260;
N0270G00Z2;
N0280X0;
N0290G01;
N0300;
N0310G00Z2;
N0320Y0;
N0330G01;
N0340;
N0350G00;
N0360X0Y0M05;
N0370S800M03T05;
N0380G00;
N0390;
N0400G01;
N0410;
N0420;
N0430;
N0440;
N0450G00;
N0460Y0;
N0470M98P100;
N0480G24X0;
N0490M98P100;
N0500G24X0Y0;
N0510M98P100;
N0520G25;
N0530G24Y0;
N0540M98P100;
N0550G25;
N0560G00Z100;
N0570M05;
N0580M02;
子程序
O100
N0010G42G01D01
N0020G01
N0030G03
N0040G02
N0050G03
N0055G01G40X0
N0060G00
N0070
N0080G01
N0085G01G41D01
N0090G03J0
N0095G01G40
N0100G00
N0110X0Y0
N0120M99
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