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  1. #1
    Join Date
    Nov 2008
    Posts
    2

    G71 on fanuc 10T

    Hi everyboby. I'm new here and really hope you can help me...

    when running following program the machine seems to disregard all the roundings and just run in straight lines from start to end dia.
    but in G70 and simulation on the pc it works right??

    N4 G97 X6.0 Z3. M8
    G71P305Q700U-0.2W0.1D600F0.1
    N305 G00 X39.698 Z3.010
    N307 G01 G41
    N310 G01 X34.698 Z0.010 F0.05
    N315 G01 X29.698 Z0.010
    N320 G02 X28.024 Z-0.065 I0.074 K-5.549
    N325 X27.769 Z-0.088 I0.710 K-4.268
    N330 X27.383 Z-0.143 I0.229 K-1.161
    N335 X26.920 Z-0.259 I0.467 K-1.223
    N340 X26.791 Z-0.301 I1.847 K-2.927
    N345 X26.527 Z-0.404 I0.591 K-0.892
    N350 X26.463 Z-0.434 I1.852 K-2.020
    N355 X26.430 Z-0.450 I2.052 K-2.170
    N360 X26.155 Z-0.604 I0.932 K-0.970
    N365 X25.979 Z-0.738 I0.890 K-0.679
    N370 X25.947 Z-0.767 I2.387 K-1.330
    N375 X25.873 Z-0.842 I1.045 K-0.566
    N380 X25.821 Z-0.906 I0.744 K-0.338
    N385 X25.606 Z-1.280 I2.977 K-1.056
    N390 X25.528 Z-1.466 I9.833 K-2.175
    N395 X25.502 Z-1.540 I1.291 K-0.260
    N400 X25.253 Z-2.428 I215.343 K-30.637
    N405 X25.168 Z-2.738 I235.426 K-32.505
    N410 X24.973 Z-3.479 I78.076 K-10.675
    N415 X24.967 Z-3.501 I166.488 K-21.157
    N420 X24.718 Z-4.535 I81.524 K-10.349
    N425 X24.709 Z-4.573 I5.826 K-0.665
    N430 G01 X24.489 Z-5.601
    N435 X24.280 Z-6.576
    N440 G03 X24.258 Z-6.679 I-36.183 K3.858
    N445 X24.094 Z-7.421 I-453.416 K49.650
    N450 X24.014 Z-7.769 I-41.791 K4.645
    N455 X23.879 Z-8.321 I-146.361 K17.502
    N460 X23.733 Z-8.872 I-29.206 K3.605
    N465 X23.628 Z-9.234 I-75.017 K10.699
    N470 X23.375 Z-10.003 I-23.752 K3.505
    N475 X23.334 Z-10.116 I-47.586 K8.609
    N480 X22.946 Z-11.055 I-21.118 K3.872
    N485 X22.884 Z-11.190 I-42.771 K9.834
    N490 X22.405 Z-12.112 I-18.501 K4.315
    N495 X21.727 Z-13.178 I-18.818 K5.394
    N500 X21.718 Z-13.191 I-37.472 K13.100
    N505 X20.917 Z-14.238 I-18.512 K6.479
    N510 X20.220 Z-15.027 I-17.705 K7.357
    N515 X19.967 Z-15.294 I-48.587 K22.804
    N520 X19.169 Z-16.093 I-21.871 K10.412
    N525 X19.015 Z-16.240 I-51.653 K26.970
    N530 X18.199 Z-16.989 I-25.388 K13.349
    N535 X17.985 Z-17.178 I-64.296 K36.285
    N540 X17.536 Z-17.571 I-65.764 K37.369
    N545 X16.875 Z-18.123 I-16.809 K9.685
    N550 X16.456 Z-18.450 I-11.913 K7.401
    N555 X15.652 Z-19.055 I-108.338 K71.530
    N560 X15.170 Z-19.410 I-25.451 K17.009
    N565 G02 X14.423 Z-19.957 I62.022 K-42.720
    N570 X13.655 Z-20.527 I260.020 K-175.746
    N575 X13.243 Z-20.837 I28.582 K-19.227
    N580 X12.745 Z-21.218 I89.015 K-58.495
    N585 X12.136 Z-21.697 I21.028 K-13.690
    N590 X11.960 Z-21.840 I48.408 K-29.977
    N595 X11.127 Z-22.544 I19.798 K-12.180
    N600 X10.361 Z-23.248 I19.612 K-11.133
    N605 X10.219 Z-23.385 I48.427 K-25.261
    N610 X9.785 Z-23.808 I46.845 K-24.268
    N615 X9.399 Z-24.211 I8.951 K-4.535
    N620 X9.075 Z-24.591 I8.856 K-4.002
    N625 X8.655 Z-25.119 I60.001 K-24.102
    N630 X8.326 Z-25.545 I60.557 K-23.709
    N635 X7.964 Z-26.044 I13.642 K-5.231
    N640 X7.942 Z-26.076 I31.626 K-10.826
    N645 X7.404 Z-26.944 I15.244 K-5.201
    N650 X7.122 Z-27.467 I27.862 K-7.782
    N655 X6.995 Z-27.767 I3.263 K-0.846
    N660 X6.950 Z-27.953 I2.163 K-0.355
    N665 X6.871 Z-28.527 I38.212 K-2.947
    N670 X6.847 Z-28.757 I11.047 K-0.686
    N675 X6.784 Z-29.554 I230.581 K-9.489
    N680 X6.729 Z-30.314 I234.359 K-8.833
    N685 X6.715 Z-30.598 I16.159 K-0.557
    N690 X6.706 Z-31.121 I31.920 K-0.538
    N695 G01 X6.6 Z-32.
    N700 X6.
    G00 G40 X6. Z3. I0 K0
    G00 X6. Z3.
    Z150.

  2. #2
    Join Date
    Jan 2007
    Posts
    10

    Post Radius on 10T

    Try using R instead of I and K
    Use pythagoras to convert to R
    SQRT(I^+K^)

  3. #3
    Join Date
    Sep 2007
    Posts
    37

    coolant tester

    Have you ran the g-70?

    G-71 may not cut your arc's as it is primarillary a roughing routine and often will not cut arc's.

  4. #4
    Join Date
    Feb 2006
    Posts
    992
    The max execution for G70 is 50lines, ur rough cycle is too long. Try R instead I and K some machine don't support it.

    Quote Originally Posted by SCHMIDT View Post
    Hi everyboby. I'm new here and really hope you can help me...

    when running following program the machine seems to disregard all the roundings and just run in straight lines from start to end dia.
    but in G70 and simulation on the pc it works right??

    N4 G97 X6.0 Z3. M8
    G71P305Q700U-0.2W0.1D600F0.1
    N305 G00 X39.698 Z3.010
    N307 G01 G41
    N310 G01 X34.698 Z0.010 F0.05
    N315 G01 X29.698 Z0.010
    N320 G02 X28.024 Z-0.065 I0.074 K-5.549
    N325 X27.769 Z-0.088 I0.710 K-4.268
    N330 X27.383 Z-0.143 I0.229 K-1.161
    N335 X26.920 Z-0.259 I0.467 K-1.223
    N340 X26.791 Z-0.301 I1.847 K-2.927
    N345 X26.527 Z-0.404 I0.591 K-0.892
    N350 X26.463 Z-0.434 I1.852 K-2.020
    N355 X26.430 Z-0.450 I2.052 K-2.170
    N360 X26.155 Z-0.604 I0.932 K-0.970
    N365 X25.979 Z-0.738 I0.890 K-0.679
    N370 X25.947 Z-0.767 I2.387 K-1.330
    N375 X25.873 Z-0.842 I1.045 K-0.566
    N380 X25.821 Z-0.906 I0.744 K-0.338
    N385 X25.606 Z-1.280 I2.977 K-1.056
    N390 X25.528 Z-1.466 I9.833 K-2.175
    N395 X25.502 Z-1.540 I1.291 K-0.260
    N400 X25.253 Z-2.428 I215.343 K-30.637
    N405 X25.168 Z-2.738 I235.426 K-32.505
    N410 X24.973 Z-3.479 I78.076 K-10.675
    N415 X24.967 Z-3.501 I166.488 K-21.157
    N420 X24.718 Z-4.535 I81.524 K-10.349
    N425 X24.709 Z-4.573 I5.826 K-0.665
    N430 G01 X24.489 Z-5.601
    N435 X24.280 Z-6.576
    N440 G03 X24.258 Z-6.679 I-36.183 K3.858
    N445 X24.094 Z-7.421 I-453.416 K49.650
    N450 X24.014 Z-7.769 I-41.791 K4.645
    N455 X23.879 Z-8.321 I-146.361 K17.502
    N460 X23.733 Z-8.872 I-29.206 K3.605
    N465 X23.628 Z-9.234 I-75.017 K10.699
    N470 X23.375 Z-10.003 I-23.752 K3.505
    N475 X23.334 Z-10.116 I-47.586 K8.609
    N480 X22.946 Z-11.055 I-21.118 K3.872
    N485 X22.884 Z-11.190 I-42.771 K9.834
    N490 X22.405 Z-12.112 I-18.501 K4.315
    N495 X21.727 Z-13.178 I-18.818 K5.394
    N500 X21.718 Z-13.191 I-37.472 K13.100
    N505 X20.917 Z-14.238 I-18.512 K6.479
    N510 X20.220 Z-15.027 I-17.705 K7.357
    N515 X19.967 Z-15.294 I-48.587 K22.804
    N520 X19.169 Z-16.093 I-21.871 K10.412
    N525 X19.015 Z-16.240 I-51.653 K26.970
    N530 X18.199 Z-16.989 I-25.388 K13.349
    N535 X17.985 Z-17.178 I-64.296 K36.285
    N540 X17.536 Z-17.571 I-65.764 K37.369
    N545 X16.875 Z-18.123 I-16.809 K9.685
    N550 X16.456 Z-18.450 I-11.913 K7.401
    N555 X15.652 Z-19.055 I-108.338 K71.530
    N560 X15.170 Z-19.410 I-25.451 K17.009
    N565 G02 X14.423 Z-19.957 I62.022 K-42.720
    N570 X13.655 Z-20.527 I260.020 K-175.746
    N575 X13.243 Z-20.837 I28.582 K-19.227
    N580 X12.745 Z-21.218 I89.015 K-58.495
    N585 X12.136 Z-21.697 I21.028 K-13.690
    N590 X11.960 Z-21.840 I48.408 K-29.977
    N595 X11.127 Z-22.544 I19.798 K-12.180
    N600 X10.361 Z-23.248 I19.612 K-11.133
    N605 X10.219 Z-23.385 I48.427 K-25.261
    N610 X9.785 Z-23.808 I46.845 K-24.268
    N615 X9.399 Z-24.211 I8.951 K-4.535
    N620 X9.075 Z-24.591 I8.856 K-4.002
    N625 X8.655 Z-25.119 I60.001 K-24.102
    N630 X8.326 Z-25.545 I60.557 K-23.709
    N635 X7.964 Z-26.044 I13.642 K-5.231
    N640 X7.942 Z-26.076 I31.626 K-10.826
    N645 X7.404 Z-26.944 I15.244 K-5.201
    N650 X7.122 Z-27.467 I27.862 K-7.782
    N655 X6.995 Z-27.767 I3.263 K-0.846
    N660 X6.950 Z-27.953 I2.163 K-0.355
    N665 X6.871 Z-28.527 I38.212 K-2.947
    N670 X6.847 Z-28.757 I11.047 K-0.686
    N675 X6.784 Z-29.554 I230.581 K-9.489
    N680 X6.729 Z-30.314 I234.359 K-8.833
    N685 X6.715 Z-30.598 I16.159 K-0.557
    N690 X6.706 Z-31.121 I31.920 K-0.538
    N695 G01 X6.6 Z-32.
    N700 X6.
    G00 G40 X6. Z3. I0 K0
    G00 X6. Z3.
    Z150.
    The best way to learn is trial error.

  5. #5
    Join Date
    Mar 2007
    Posts
    34
    Really? 50 lines max??? I've never had more than 10 or 12, but that's a pretty useful piece of information to me. Thanks 2006.

  6. #6
    Join Date
    Feb 2008
    Posts
    3
    G71 Syntax is

    N1 G71 U( ) R( )
    N2 G71 P100 Q300 U0.5 W0.025 F0.2
    N100-N300 GEOMETRY. WHAT I'M SAYING IS THAT YOU SHOULD SET DEPTH OF CUT(U)
    AND REMOVE DISTANCE OF THE TOOL ON PASSES (R).

  7. #7
    Join Date
    Jan 2007
    Posts
    10

    Post Depth of cut setting

    Yes you should indicate depth of cut in G71 Cycle
    If you use OT Control then doc is U2.( per side ) R.5 ( must be less than
    value in U ) This is only the cut retract value.
    If you use 6T Control then everything including doc is specified in
    G71 line ie D2000 ( without decimal point ),in 6T Control retract value
    is set with parameter
    Hope this helps
    Zicci

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