
%
O0
T1 M06
S1100 M03
G00 G91 G28 Z0
G90 G43 Z100 H01 M08
X0 Y50
Z3
G01 Z-1 F100
G42 X-10 Y43 D01 F300
G03 X0 Y35 R10
G01 X21835
G02 X35 Y21835 R-10
G01 Y-21835
G02 X21835 Y-35 R-10
G01 X-21835
G02 X-35 Y-21835 R-10
G01 Y21835
G02 X-21835 Y35 R-10
G01 X0
G03 X10 Y43 R10
G40 X0 Y50
G00 Z100 M09 M05
M01
X-50 Y50
M03 S1100
Z3
G01 Z-25 F100
G41 X-45 Y43 D01 F300
X43
Y-43
X-43
Y45
G40 X-50 Y50
G00 G91 G28 Z0 M09 M05
M01
T2 M06
S1200 M03
G00 G91 G28 Z0
G90 G43 Z100 H02 M08
X0 Y0
G98 G81 X0 Y0 Z-7 R3 F125
G80
G00 G91 G28 Z0 M09 M05
M30
%
图示的形位公差要求不高感觉粗铣应该可以获得,所以直接粗加工到尺寸,选用直径20铣刀 使用一号长度补偿,半径补偿寄存器输入R10或D20 使用G54坐标系,Z轴零点设定在工件上表面
X轴Y轴为毛胚中心,X0Y0
%
O01
G40 G17 G21 G90 G49
G54
T1 M06
S2000 M03
G00 G43 Z100 H01
G00 X-50 Y65
Z-01 M08
M98 P02 L3
G00 G91 G28 Z0 M09
G90 M05
G52 X0 Y0
M00
S1100 M03
X-65 Y65
Z-101 M08
G01 G41 X-60 Y49 D01 F350
X49 ,C05
Y-49 ,C05
X-49 ,C05
Y4905 ,C05
X-38
Y60
G00 G91 G28 Z0 M09
G40 X0 Y0
G90 M05
M00
S1000 M03
G00 X0 Y65
Z10 M08
M98 P03 L5
G00 G91 G28 Z0 M09
G40 X0 Y0
G90 M05
M00
S1000 M03
G00 G90 X75 Y75
Z10
M98 P04 L5
G00 G91 G28 Z0 M09
G40 X0 Y0
G90 M05
G00 G53 Y0
M30
%
%
(铣平面程序)
O2
G91 G01 X7
G90 Y-50
G91 X24
G90Y50
M99
%
%
(铣外圆程序)
O03
G91 Z-1102
G90 G01 X0 Y60 F380
G02 I0 J-60
G41 G01 X-10 Y55 D01
G03 X0 Y40 R12
G02 I0 J-40
G03 X10 Y60 R12
G00 G91 Z10
G40 G90 X0 Y65
M99
%
%
(铣内腔程序)
O04
G90 X75 Y75
G91Z-7
G01 Z-28 F100
G03 I-75 J0 Z-1228 K1288 F300
G01 G90 G41 X0 Y0 D01
G03 X30 Y0 I15 J0
G03 X-30 Y0 I-30 J0
G03 X-15 Y-15 I15 J0
G01 X15
G03 X25 Y-8 R11
G00 G91 Z10
G40 X0 Y0
M99
%
毛坯为70㎜×70㎜×18㎜板材,六面已粗加工过,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
嗯
下面的 鹏字
N100 G21
N102 G0 G17 G40 G49 G80 G90
N104 T2 M6
N106 G0 G90 G54 X10766 Y54156 S2000 M5
N108 G43 H2 Z50
N110 Z10
N112 G1 Z-3 F200
N114 X11002 Y42292
N116 X11072 Y35842
N118 X1108 Y30515
N120 X11025 Y25377
N122 X10972 Y23145
N124 X10951 Y22465
N126 X10813 Y1993
N128 X10458 Y16587
N130 X9916 Y13364
N132 X919 Y10251
N134 X8283 Y724
N136 X7197 Y4325
N138 X6863 Y3531
N140 X7385 Y3223
N142 X877 Y5292
N144 X9987 Y7471
N146 X11041 Y9767
N148 X11931 Y12189
N150 X12657 Y14748
N152 X13216 Y17453
N154 X13602 Y20318
N156 X13807 Y23353
N158 X1384 Y25201
N160 X19311
N162 Y11553
N164 X19286 Y11181
N166 X19224 Y109
N168 X19125 Y10657
N170 X18817 Y10288
N172 X18372 Y10071
N174 X17744 Y9999
N176 X17436 Y10016
N178 X1384 Y10354
N180 Y9525
N182 X14763 Y9159
N184 X15477 Y883
N186 X16105 Y8493
N188 X16643 Y8149
N190 X17076 Y7815
N192 X17692 Y7156
N194 X18016 Y6528
N196 X18113 Y5928
N198 X19464 Y6581
N200 X20469 Y728
N202 X21189 Y8018
N204 X21673 Y8795
N206 X21954 Y9623
N208 X22046 Y10519
N210 X22016 Y11031
N212 Y50406
N214 X23738 Y51604
N216 X20664 Y54156
N218 X18942 Y52281
N220 X1384
N222 X10766 Y54156
N224 G0 Z50
N226 X1384 Y50928
N228 Z10
N230 G1 Z-3
N232 Y39002
N234 X19311
N236 Y50928
N238 X1384
N240 G0 Z50
N242 X26135 Y54156
N244 Z10
N246 G1 Z-3
N248 X26255 Y4018
N250 X26262 Y32706
N252 X2622 Y27039
N254 X26119 Y22047
N256 X26047 Y20069
N258 X26028 Y19653
N260 X25855 Y1752
N262 X25472 Y15044
N264 X249 Y12651
N266 X2414 Y10331
N268 X23191 Y8077
N270 X22049 Y5881
N272 X20817 Y39
N274 X2134 Y3377
N276 X22266 Y4367
N278 X23128 Y536
N280 X24641 Y7328
N282 X25865 Y9244
N284 X26825 Y11114
N286 X27542 Y12945
N288 X27672 Y13351
N290 X28032 Y14636
N292 X28564 Y17116
N294 X28946 Y19864
N296 X29163 Y22904
N298 X29209 Y25201
N300 X35141
N302 Y9525
N304 X35116 Y9159
N306 X35047 Y8859
N308 X34794 Y8407
N310 X34406 Y8122
N312 X33855 Y7975
N314 X33528 Y7957
N316 X32652 Y7989
N318 X30621 Y823
N320 X29209 Y8479
N322 Y765
N324 X302 Y725
N326 X30965 Y6896
N328 X31638 Y6536
N330 X32214 Y6173
N332 X32677 Y5824
N334 X33042 Y5488
N336 X33536 Y4836
N338 X3376 Y4222
N340 X33789 Y39
N342 X35082 Y4445
N344 X36089 Y5081
N346 X36858 Y5799
N348 X37424 Y6598
N350 X3781 Y7488
N352 X38023 Y8489
N354 X38061 Y9525
N356 Y50406
N358 X39567 Y52127
N360 X3634 Y54525
N362 X34988 Y52281
N364 X29209
N366 X26135 Y54156
N368 G0 Z50
N370 X29209 Y50928
N372 Z10
N374 G1 Z-3
N376 Y39002
N378 X35141
N380 Y50928
N382 X29209
N384 G0 Z50
N386 X41965 Y51973
N388 Z10
N390 G1 Z-3
N392 X42095 Y50143
N394 X42236 Y4493
N396 X42328 Y33218
N398 X42334 Y28275
N400 X40766 Y27076
N402 X43686 Y24678
N404 X45192 Y264
N406 X57334
N408 X57234 Y21108
N410 X56958 Y16735
N412 X56709 Y14406
N414 X5655 Y13244
N416 X56111 Y10921
N418 X55909 Y10172
N420 X55692 Y9525
N422 X55461 Y8982
N424 X55233 Y857
N426 X5501 Y8266
N428 X54792 Y8052
N430 X54579 Y791
N432 X54229 Y7803
N434 X53238 Y7811
N436 X51428 Y8049
N438 X48355 Y8672
N440 X4759 Y8848
N442 X47436 Y7803
N444 X48533 Y7421
N446 X49473 Y7042
N448 X50269 Y6669
N450 X50934 Y6303
N452 X51483 Y5945
N454 X52304 Y5237
N456 X52794 Y4562
N458 X53028 Y3909
N460 X53061 Y3377
N462 X5464 Y3899
N464 X55451 Y4274
N466 X56167 Y4697
N468 X56965 Y5329
N470 X57606 Y6084
N472 X58186 Y7096
N474 X58729 Y846
N476 X59101 Y9755
N478 X5929 Y10696
N480 X59585 Y13093
N482 X59882 Y17285
N484 X60145 Y24047
N486 X60192 Y25877
N488 X61914 Y26707
N490 X5884 Y29781
N492 X56811 Y27752
N494 X45039
N496 Y48531
N498 X55613
N500 X55212 Y41114
N502 X54934 Y3763
N504 X54759 Y36298
N506 X54675 Y35928
N508 X54423 Y35325
N510 X5402 Y34808
N512 X53532 Y34501
N514 X53138 Y34391
N516 X52413 Y34366
N518 X50982 Y34534
N520 X48478 Y35048
N522 X48266 Y35098
N524 X48113 Y34207
N526 X49119 Y3385
N528 X49877 Y33536
N530 X5054 Y33215
N532 X51105 Y32889
N534 X51552 Y32575
N536 X51898 Y32273
N538 X52157 Y31982
N540 X52467 Y31415
N542 X52542 Y30872
N544 X52539 Y30826
N546 X53693 Y31123
N548 X55102 Y31651
N550 X56117 Y32237
N552 X56811 Y32854
N554 X57094 Y33234
N556 X57481 Y34039
N558 X57797 Y35178
N560 X58013 Y36743
N562 X58087 Y38218
N564 X58317 Y48223
N566 X60039 Y49576
N568 X56811 Y52127
N570 X5509 Y50098
N572 X48266
N574 X49764 Y5215
N576 X5041 Y52913
N578 X50956 Y53491
N580 X51485 Y53987
N582 X51997 Y54402
N584 X52926 Y54969
N586 X53584 Y55201
N588 X49311 Y57598
N590 X48564 Y54166
N592 X4756 Y50504
N594 X47436 Y50098
N596 X45039
N598 X41965 Y51973
N600 G0 Z50
N602 X4759 Y45979
N604 Z10
N606 G1 Z-3
N608 X47067 Y45457
N610 X47997 Y43941
N612 X48711 Y42395
N614 X49223 Y40812
N616 X49465 Y39678
N618 X49612 Y38982
N620 X49752 Y38528
N622 X4991 Y3817
N624 X50072 Y37923
N626 X50234 Y37762
N628 X50571 Y3763
N630 X50939 Y37706
N632 X51397 Y3802
N634 X51525 Y38141
N636 X52176 Y38914
N638 X52594 Y397
N640 X52772 Y40451
N642 X52743 Y41191
N644 X52723 Y41292
N646 X52569 Y41718
N648 X52126 Y42384
N650 X51288 Y43255
N652 X49898 Y44394
N654 X47763 Y45868
N656 X4759 Y45979
N658 G0 Z50
N660 X35141 Y3765
N662 Z10
N664 G1 Z-3
N666 X29209
N668 Y26553
N670 X35141
N672 Y3765
N674 G0 Z50
N676 X19311
N678 Z10
N680 G1 Z-3
N682 X1384
N684 Y26553
N686 X19311
N688 Y3765
N690 G0 Z50
N692 X38584 Y18377
N694 Z10
N696 G1 Z-3
N698 X40613 Y16348
N700 X428 Y16825
N702 X44085 Y16984
N704 X45039 Y17025
N706 X56135
N708 X52692 Y20775
N710 X5051 Y18377
N712 X38584
N714 G0 Z50
N716 M5
N718 G91 G28 Z0
N720 M30
程序如下
( T2 | | H2 )
N100 G21
N102 G0 G17 G40 G49 G80 G90
N104 T2 M6
N106 G0 G90 G54 X0 Y0 S1000 M3
N108 G43 H2 Z25
N110 X10277 Y18559
N112 Z10
N114 G1 Z-2 F500
N116 G2 X1006 Y18556 I-217 J6974 F200
N118 X4324 Y21561 I0 J6977
N120 X2932 Y23875 I1228 J2314
N122 X3596 Y25617 I262 J0
N124 X-6859 Y19931 I-13139 J11704
N126 G3 X-1507 Y12062 I1511 J-9795
N128 G0 Z248
N130 Z25
N132 X-7913 Y11341
N134 Z10
N136 G1 Z-2 F500
N138 G3 X-12363 Y12461 I-445 J-8283 F200
N140 X-21499 Y5279 I0 J-9403
N142 G2 X-18613 Y7547 I2886 J-702
N144 X-16865 Y6979 I0 J-297
N146 X-15266 Y3838 I-2286 J-3141
N148 X-15442 Y2683 I-3885 J0
N150 G3 X-15945 Y-625 I10627 J-3308
N152 X-9695 Y-10628 I1113 J0
N154 G0 Z248
N156 Z25
N158 X-6387 Y-8849
N160 Z10
N162 G1 Z-2 F500
N164 G3 X-13848 Y-17791 I3529 J-10528 F200
N166 G2 X-1828 Y-21629 I-4432 J64
N168 G1 X-18298
N170 G0 Z248
N172 Z25
N174 X-16564 Y-21287
N176 Z10
N178 G1 Z-2 F500
N180 G3 X-71 Y-22612 I9464 J33148 F200
N182 X1072 Y-21629 I0 J34473
N184 X3035 Y-21779 I1963 J12797
N186 X15982 Y-8832 I0 J12947
N188 X11268 Y1159 I-12947 J0
N190 G0 Z248
N192 Z25
N194 X8955 Y35
N196 Z10
N198 G1 Z-2 F500
N200 G2 X11217 Y-3174 I-8717 J-6674 F200
N202 X5045 Y-13044 I-10979 J0
N204 X45 Y-13285 I-842 J1169
N206 X1278 Y-13662 I-3671 J17413
N208 X1072 Y-13665 I-206 J8181
N210 X-7112 Y-5481 I0 J8184
N212 X-6902 Y-3639 I8184 J0
N214 X-6609 Y-2585 I11945 J-2759
N216 G3 X-6396 Y-1248 I-4085 J1337
N218 X-6833 Y643 I-4298 J0
N220 X-7506 Y1731 I-5864 J-2872
N222 G0 Z248
N224 Z25
N226 X-6111 Y274
N228 Z10
N230 G1 Z-2 F500
N232 G3 X2711 Y1715 I8822 J3744 F200
N234 X5261 Y18 I0 J38465
N236 X10495 Y8183 I-1275 J6383
N238 X10493 Y8347 I-6509 J0
N240 G0 Z248
N242 Z25
N244 X10568 Y8349
N246 Z10
N248 G1 Z-2 F500
N250 G3 X10595 Y869 I-2136 J341 F200
N252 X1004 Y10136 I-2163 J0
N254 G2 X9743 Y10909 I859 J773
N256 X10899 Y12065 I1156 J0
N258 X10968 Y12062 I0 J-1156
N260 X952 Y11733 I-1448 J302
N262 X8073 Y12062 I0 J3349
N264 G3 X607 Y13759 I-7466 J-15576
N266 X-6859 Y12062 I0 J-17273
N268 X-8701 Y10336 I181 J-3777
N270 G2 X-12107 Y8285 I-3508 J197
N272 X-12016 Y8286 I091 J-3579
N274 X-8436 Y4706 I0 J-358
N276 X-8445 Y4452 I-358 J0
N278 G3 X-8454 Y4201 I3517 J-251
N280 X-7941 Y2369 I3526 J0
N282 X-364 Y-883 I6255 J3802
N284 G2 X-441 Y-5089 I-1166 J-4206
N286 X-46 Y-5481 I-4365 J0
N288 X2202 Y-463 I2662 J-3737
N290 X2452 Y-4637 I0 J-4588
N292 X8472 Y-10436 I-348 J-6385
N294 G3 X8705 Y-8575 I-7327 J1861
N296 X3035 Y-1256 I-756 J0
N298 X-1109 Y015 I-5257 J-9757
N300 G2 X-6329 Y3029 I737 J7305
N302 X-71 Y4201 I13395 J965
N304 X-7697 Y6361 I361 J216
N306 X-5217 Y10198 I4207 J0
N308 X-4903 Y10488 I1247 J-1035
N310 X-1943 Y11425 I296 J-4206
N312 X2426 Y8995 I0 J-5143
N314 X2674 Y809 I-1528 J-905
N316 X14 Y6386 I-1776 J0
N318 G3 X6 Y6111 I2698 J-9153
N320 G2 X079 Y6012 I-521 J1322
N322 X-12 Y6816 I0 J1421
N324 G3 X-35 Y6539 I85 J1164
N326 X1091 Y798 I0 J1441
N328 X984 Y8527 I-1441 J0
N330 X-12 Y959 I-2184 J-1711
N332 X-3974 Y6816 I0 J-2774
N334 X-2977 Y4684 I2774 J0
N336 X616 Y3383 I3593 J4311
N338 X6228 Y8995 I0 J5612
N340 X4906 Y12613 I-5612 J0
N342 X607 Y13759 I-4299 J-749
N344 G0 Z248
N346 Z25
N348 X-3166 Y13342
N350 Z10
N352 G1 Z-2 F500
N354 G2 X8073 Y18729 I11239 J-903 F200
N356 X13642 Y17609 I0 J-14417
N358 G3 X18834 Y16566 I5192 J12395
N360 X21134 Y16764 I0 J13438
N362 X18776 Y11099 I5625 J-5665
N364 X18834 Y10136 I7983 J0
N366 G0 Z248
N368 Z25
N370 X19019 Y10119
N372 Z10
N374 G1 Z-2 F500
N376 G2 X19703 Y6144 I-11216 J-3975 F200
N378 X13642 Y-4225 I-119 J0
N380 G0 Z248
N382 Z25
N384 X12322 Y-17852
N386 Z10
N388 G1 Z-2 F500
N390 G3 X31307 Y-27253 I18985 J1447 F200
N392 X32653 Y-27214 I0 J23871
N394 G0 Z248
N396 Z25
N398 X21322 Y-25064
N400 Z10
N402 G1 Z-2 F500
N404 G2 X35 Y-6517 I77265 J-42663 F200
N406 G0 Z248
N408 Z25
N410 Y-2676
N412 Z10
N414 G1 Z-2 F500
N416 G3 X20729 Y-20452 I3935 J-17776 F200
N418 X21322 Y-25064 I18206 J0
N420 G1 F500
N422 G3 X30266 Y-23284 I-10423 J75746 F200
N424 X35096 Y-13653 I-7186 J9631
N426 X35 Y-12129 I-12016 J0
N428 G0 Z248
N430 Z25
N432 Y-13653
N434 Z10
N436 G1 Z-2 F500
N438 X26122 Y-17341 F200
N440 G0 Z248
N442 Z25
N444 X27553 Y-15497
N446 Z10
N448 G1 Z-2 F500
N450 X21264 Y-16069 F200
N452 G0 Z248
N454 Z25
N456 X8088 Y-20752
N458 Z10
N460 G1 Z-2 F500
N462 G3 X29796 Y-30001 I21708 J20852 F200
N464 X32653 Y-29864 I0 J30101
N466 G0 Z248
N468 Z25
N470 X14675 Y-25926
N472 Z10
N474 G1 Z-2 F500
N476 G3 X9704 Y-24587 I-4971 J-8556 F200
N478 X882 Y-30 I0 J-9895
N480 G0 Z248
N482 Z25
N484 X15127 Y-26184
N486 Z10
N488 G1 Z-2 F500
N490 G2 X1053 Y-30 I-122314 J142658 F200
N492 G0 Z25
N494 M5
N496 G91 G28 Z0
N498 M30
1.数控铣床一般 *** 作步骤
(l)书写或编程加工前应首先编制工件的加工程序,如果工件的加工程序较长且比较复杂时,最好不要在机床上编程,而采用编程机或电脑编程,这样可以避免占用机时,对于短程序也应写在程序单上。
(2)开机一般是先开机床再开系统,有的设计二者是互锁的,机床不通电就不能在CRT上显示信息。
(3)回参考点对于增量控制系统(使用增量式位置检测元件)的机床,必须首先执行这一步,以建立机床各坐标的移动基准。
(4)调加工程序根据程序的存储介质(纸带或磁带、磁盘),可以用纸带阅读机、盒式磁带机、编程机或串口通信输入,若是简单程序可直接采用键盘在CNC控制面板上输人,若程序非常简单且只加工一件,程序没有保存的必要。可采用MDI方式逐段输人、逐段加工。另外,程序中用到的工件原点、刀具参数、偏置量、各种补偿量在加工前也必须输人。
(5)程序的编辑输人的程序若需要修改,则要进行编辑 *** 作。此时,将方式选择开关置于编辑位置,利用编辑键进行增加、删除、更改。关于编辑方法可见相应的说明书。
(6)机床锁住,运行程序此步骤是对程序进行检查,若有错误,则需重新进行编辑。
(7)上工件、找正对刀采用手动增量移动,连续移动或采用手摇轮移动机床。将起刀点对到程序的起始处,并对好刀具的基准。
(8)启动坐标进给进行连续加工一般是采用存储器中程序加工。这种方式比采用纸带上程序加工故障率低。加工中的进给速度可采用进给倍率开关调节。加工中可以按进给保持按钮,暂停进给运动,观察加工情况或进行手工测量。再按下循环启动按钮,即可恢复加工。为确保程序正确无误,加工前应再复查一遍。在铣削加工时,对于平面曲线工件,可采用铅笔代替刀具在纸上面工件轮廓,这样比较直观。若系统具有刀具轨迹模拟功能则可用其检查程序的正确性。
(9) *** 作显示利用CRT的各个画面显示工作台或刀具的位置、程序和机床的状态,以使 *** 作工人监视加工情况。
(10)程序输出加工结束后,若程序有保存必要,可以留在CNC的内存中,若程序太长,可以把内存中的程序输出给外部设备(例如穿孔机),在穿孔纸带(或磁带、磁盘等)上加以保存。
(11)关机一般应先关机床再关系统。
2.数控铣床 *** 作过程中的注意事项
(l)每次开机前要检查一下铣床后面润滑油泵中的润滑油是否充裕,空气压缩机是否打开,切削液所用的机械油是否足够等。
(2)开机时,首先打开总电源,然后按下CNC电源中的开启按钮,把急停按钮顺时针旋转,等铣床检测完所有功能后(下 *** 作面板上的一排红色指示灯熄掉),按下机床按钮,使铣床复位,处于待命状态。
(3)在手动 *** 作时,必须时刻注意,在进行X、Y方向移动前,必须使Z轴处于抬刀位置。移动过程中,不能只看CRT屏幕中坐标位置的变化,而要观察刀具的移动,等刀具移动到位后,再看CRT屏幕进行微调。
(4)在编程过程中,对于初学者来说,尽量少用G00指令,特别在X, Y,Z三轴联动中,更应注意。在走空刀时,应把Z轴的移动与X、Y轴的移动分开进行,即多抬刀、少斜插。有时由于斜插时,刀具会碰到工件而发生刀具的破坏。
(5)在使用电脑进行串口通信时,要做到:先开铣床、后开电脑;先关电脑、后关铣床。
避免铣床在开关的过程中,由于电流的瞬间变化而冲击电脑。
(6)在利用DNC(电脑与铣床之间相互进行程序的输送)功能时,要注意铣床的内存容量,一般从电脑向铣床传输的程序总字节数应小于23kB。如果程序比较长,则必须采用由电脑边传输边加工的方法,但程序段号,不得超过N9999。如果程序段超过1万个,可以借助MASTERCAM中的程序编辑功能,把程序段号取消。
(7)铣床出现报警时,要根据报警号查找原因,及时解除报警,不可关机了事,否则开机后仍处于报警状态。
采用寻边器对刀,其详细步骤如下:
( 1 ) X 、 Y 向对刀
①将工件通过夹具装在机床工作台上,装夹时,工件的四个侧面都应留出寻边器的测量位置。
②快速移动工作台和主轴,让寻边器测头靠近工件的左侧;
③改用微调 *** 作,让测头慢慢接触到工件左侧,直到寻边器发光,记下此时机床坐标系中的 X 坐标值, 如 -310300 ;
④抬起寻边器至工件上表面之上,快速移动工作台和主轴,让测头靠近工件右侧;
⑤改用微调 *** 作,让测头慢慢接触到工件左侧,直到寻边器发光,记下此时机械坐标系中的 X 坐标值,如 -200300 ;
⑥若测头直径为 10mm ,则工件长度为 -200300-(-310300)-10=100 ,据此可得工件坐标系原点 W在机床坐标系中的 X 坐标值为 -310300+100/2+5= -255300 ;
⑦同理可测得工件坐标系原点 W 在机械坐标系中的 Y 坐标值。
( 2 ) Z 向对刀
①卸下寻边器,将加工所用刀具装上主轴;
②将 Z 轴设定器(或固定高度的对刀块,以下同)放置在工件上平面上;
③快速移动主轴,让刀具端面靠近 Z 轴设定器上表面;
改用微调 *** 作,让刀具端面慢慢接触到 Z 轴设定器上表面,直到其指针指示到零位;
⑤记下此时机床坐标系中的 Z 值,如 -250800 ;
⑥若 Z 轴设定器的高度为 50mm ,则工件坐标系原点 W 在机械坐标系中的 Z 坐标值为 -250800-50-(30-20)=-310800 。
( 3 )将测得的 X 、 Y 、 Z 值输入到机床工件坐标系存储地址中( 一般使用 G54-G59 代码存储对刀参数 )。
4、注意事项
在对刀 *** 作过程中需注意以下问题:
( 1 )根据加工要求采用正确的对刀工具,控制对刀误差;
( 2 )在对刀过程中,可通过改变微调进给量来提高对刀精度;
( 3 )对刀时需小心谨慎 *** 作,尤其要注意移动方向,避免发生碰撞危险;
( 4 )对刀数据一定要存入与程序对应的存储地址,防止因调用错误而产生严重后果。
二、刀具补偿值的输入和修改
根据刀具的实际尺寸和位置,将刀具半径补偿值和刀具长度补偿值输入到与程序对应的存储位置。
需注意的是,补偿的数据正确性、符号正确性及数据所在地址正确性都将威胁到加工,从而导致撞车危险或加工报废。
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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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