数控铣床编程实例 简单

毛坯为70㎜×70㎜×18㎜板材，六面码敏已粗加工过，要求数控铣出如图2-23所示的槽，工件材料为45钢。

选择机床设备：根据零件图漏悉样要求，选用经济型数控铣床即可达到要求。故选用XKN7125型数控立式铣床。

选择刀具：现采用φ10㎜的平底立铣刀，定义为T01，并把该刀具的直径输入刀具参数表中。

确定切削用量：切削用量的具体数值应根据该机床性能、相关的手册并结合实际经验确定，详见加工程序。

确定工件坐标系和对刀点：在XOY平面内确定以工件中心为工件原点，Z方向以工件表面为工件原点，建立工件坐标系，如图2-23所示。 采用手动对刀方法（ *** 作与前面介绍的数控铣床对刀方法相同）把点O作为对刀点。

编写程序：按该机床规定的指令代码和程序段格式，把加工零件的全部工艺过程编写成程序清单。 考虑到加工图示的槽，深为4㎜，每次切深为2㎜，分二次加工完，则为编程方便，同时减少指令条数，可采用子程序。

该工件的加工程序如下（该程序用于XKN7125铣床）：

N0010 G00 Z2 S800 T1 M03

N0020 X15 Y0 M08

N0030 G20 N01 P1.-2；调一次子程序，槽深为2㎜

N0040 G20 N01 P1.-4；再调一返模乎次子程序，槽深为4㎜

N0050 G01 Z2 M09

N0060 G00 X0 Y0 Z150

N0070 M02；主程序结束

N0010 G22 N01；子程序开始

N0020 G01 ZP1 F80

N0030 G03 X15 Y0 I-15 J0

N0040 G01 X20

N0050 G03 X20 YO I-20 J0

N0060 G41 G01 X25 Y15 ；左刀补铣四角倒圆的正方形

N0070 G03 X15 Y25 I-10 J0

N0080 G01 X-15

N0090 G03 X-25 Y15 I0 J-10

N0100 G01 Y-15

N0110 G03 X-15 Y-25 I10 J0

N0120 G01 X15

N0130 G03 X25 Y-15 I0 J10

N0140 G01 Y0

N0150 G40 G01 X15 Y0；左刀补取消

N0160 G24；主程序结束

g54g90g0x-250y250m3s800

g43h1z100z10

z-20

g1x-200y200f200

g2x0y0r200

g3x200y-200r200

g01x220y-200

z10

g1x250y200

g1x200y200

g2x0y0r200

g3x-200y-200r200

g0z10

m30

宏程序

椭圆加工（编程思路:以一小段让指直坦漏配线代替曲搜咐线）

例1 整椭圆轨迹线加工（假定加工深度为2mm)

方法一:已知椭圆的参数方X=acosθ Y=bsinθ

变量数学表达式

设定θ= #1（0°～ 360° ）

那么 X= #2 = acos［#1］

Y= #3= bsin［#1］

程序

O0001

G90 G54 G00 X40 Y0S1000 M03

g43h1Z100

G00 Z3

G01 Z-0.5F100

#1=0

N99 #2=20*cos［#1］；

#3=15*sin［#1］；

G01 X#2 Y#3 F300

#1=#1+1

IF［#1LE360］GOTO99；

GOO Z50；

M30；

%

O0100

G17G40G49G80

G91G28Z0

( 5 )

G90G54G00X0Y0

G43H01Z50.S3500M03

G00X-33.673Y25.929Z50.M09

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X36.47Y27.274

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Y26.722

X40.775

Y-27.622

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Y-30.688

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X37.179Y-20.548

X37.5Y-19.631

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X38.036Y-17.382

X38.168Y-16.295

X38.221Y-15.201

X38.225Y14.754

X38.184Y16.136

X38.066Y17.202

X37.873Y18.257

X37.607Y19.296

X37.501Y19.614

X37.5Y19.616

X37.268Y20.314

X36.858Y21.305

X36.379Y22.265

X35.834Y23.189

X35.225Y24.072

X34.556Y24.911

X33.829Y25.7

X33.049Y26.436

X32.218Y27.115

X31.674Y27.499

X31.672Y27.5

X31.342Y27.734

X30.424Y28.289

X29.47Y28.779

X28.483Y29.2

X27.47Y29.551

X26.434Y29.829

X25.381Y30.034

X24.316Y30.164

X23.245Y30.219

X-17.88Y30.225

X-18.705Y30.188

X-19.525Y30.091

X-20.336Y29.934

X-21.134Y29.718

X-21.913Y29.443

X-22.669Y29.112

X-22.452Y28.662

X-23.212Y28.257

X-23.937Y27.792

X-24.321Y27.5

X-24.322Y27.499

X-24.622Y27.271

X-25.263Y26.696

X-25.856Y26.072

X-26.396Y25.402

X-26.881Y24.691

X-37.5Y6.31

X-37.501Y6.309

X-40.409Y1.274

X-40.584Y0.869

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X-40.727Y0.0

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X-17.876Y-29.725

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X32.719Y26.06

X31.916Y26.717

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X30.763Y27.5

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X-26.232Y26.401

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G00Z1.002

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Z-2.268

G01Z-3.268F300

Y-1.388Z-3.579

Y-0.956Z-3.81

Y-0.487Z-3.952

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Y0.001

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X12.137Y15.088

X12.595Y14.891

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X13.718Y13.918

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X14.617Y6.812

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X18.765Y4.991

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X20.365Y4.109

X20.819Y3.699

X21.222Y3.239

X21.569Y2.735

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X22.079Y1.626

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X16.958Y-5.277

X16.541Y-5.326

X16.136Y-5.439

X15.754Y-5.612

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X15.092Y-6.124

X14.827Y-6.45

X14.616Y-6.813

X14.464Y-7.204

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X14.339Y-12.053

X14.292Y-12.558

X14.168Y-13.049

X13.968Y-13.516

X13.699Y-13.945

X13.366Y-14.328

X12.978Y-14.654

X12.544Y-14.917

X12.074Y-15.108

X11.58Y-15.225

X11.158Y-15.265

X-4.909Y-15.273

X-5.526Y-15.238

X-6.134Y-15.132

X-6.726Y-14.955

X-7.292Y-14.71

X-7.827Y-14.401

X-8.321Y-14.031

X-8.769Y-13.606

X-9.164Y-13.132

X-9.501Y-12.614

X-9.775Y-12.061

X-9.983Y-11.48

X-10.121Y-10.878

X-10.188Y-10.264

X-10.202Y-8.933

Y0.001

G00Z50.

G90G00Z50.

M09

M05

G91G28Z0

M30

%

-------------------------------------------------------------------------------------

华丽分割线

%

O0100

G17G40G49G80

G91G28Z0

( 10 )

G90G54G00X0Y0

G43H01Z50.S1000M03

G98G83X-24.928Y0.0Z-18.004R1.Q1.F500M09

G80Z50.

G90G00Z50.

M09

M05

G91G28Z0

M30

%

由于程序太大上转程序为图一,第二程序为转孔,实际加工应为图二效果!

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