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IndustryArena Forum > MetalWorking Machines > Haas Mills > Help with Cutter Compensation.
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  1. #1
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    Mar 2015
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    4

    Help with Cutter Compensation.

    Hello, I am using a Haas VF-1. Cutter compensation seems to be working partially as the tool is off to the left side of my path using G41. However when I changed the diameter of the tool in the tool offsets page it doesnt seem to change the offset of the tool.

    Help please! I spent 3 hours pulling my hair out trying to solve this today.

  2. #2
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    Nov 2005
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    28

    Re: Help with Cutter Compensation.

    Care to post some g-code?

  3. #3
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    Mar 2015
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    4

    Re: Help with Cutter Compensation.

    %
    O51500;
    N1 T01 M06 (.500 DIA ENDMILL);
    N2 90 G54;
    N3 G00 X-.75 Y1.425 M03 S5000 (MILL FACE);
    N4 G43 H01 Z-.015;
    N5 G01 X4.0 F40.0;
    N6 G00 Y.950;
    N7 G01 X-.75 F40.0;
    N8 G00 Y.475;
    N9 G01 X4.0 F40.0;
    N10 G00 Y0;
    N11 G01 X-.75 F40.0;
    N12 G00 Y-.475;
    N13 G01 X4.0 F40.0;
    N14 G00 Y-.950;
    N15 G01 X-.75 F40.0;
    N16 G00 Y-.1.425;
    N17 G01 X4.0 F40.0;
    N18 G00 Z1.0;
    N19;
    N20 (MILL HOLE);
    N21 G00 X1.250 Y0.0);
    N22 Z.01;
    N23 G150 P51502 X2.125 Y0.0 Z-1.080 G42 J.125 K.02 Q.1 R.1 D01 F15.0;
    N24 G40 X1.250 Y0.0;
    N25 G00 Z1.0;
    N26 G28;
    N27;
    N28 (OUTSIDE PROFILE);
    N29 T02 M06 (.375 DIA ENDMILL);
    N30 G00 X-.500 Y.531 M03 S6000;
    N31 G43 H02 Z-0.0;
    N32 M97 P85 L22;
    N33 G40 G00 Z1.0;
    N34 G04 P30.0
    N35;
    N36 (FINISH OUTSIDE)(CHANGE DIA T02);
    N37 G00 X-.500 Y.531 M03 S6000;
    N38 G43 H02 Z-.550;
    N39 G41 G01 X-.250 Y.531 F30.0;
    N40 X.0;
    N41 X.875 Y1.076;
    N42 X1.6875;
    N43 G02 X1.875 Y.8885 R.1875;
    N44 G01 Y.576;
    N45 G02 X1.875 Y-.576 R.688;
    N46 G01 Y-.8885;
    N47 G02 X1.6875 Y-1.076 R.1875;
    N48 G01 X.875;
    N49 X0.0 Y-.531
    N50 G01 X-.500;
    N51 G00 Y.531 (RAPID TO BEGINNING);
    N52 Z-1.080 (SECOND PASS);
    N53 X.0;
    N54 X.875 Y1.076;
    N55 X1.6875;
    N56 G02 X1.875 Y.8885 R.1875;
    N57 G01 Y.576;
    N58 G02 X1.875 Y-.576 R.688;
    N59 G01 Y-.8885;
    N60 G02 X1.6875 Y-1.076 R.1875;
    N61 G01 X.875;
    N62 X0.0 Y-.531
    N63 G01 X-.500;
    N64 G00 Z1.0
    N65 ;
    N66 (RADIUS EDGE);
    N67 T03 M06 (.125 RADIUS END MILL);
    N68 G00 X-.500 Y.531 M03 S5000;
    N69 G43 H03 Z-.120;
    N70 G01 X0.0 F25.0;
    N71 X.875 Y1.076;
    N72 X1.6875;
    N73 G02 X1.875 Y.8885 R.1875;
    N74 G01 Y.576;
    N75 G02 X1.875 Y-.576 R.688;
    N76 G01 Y-.8885;
    N77 G02 X1.6875 Y-1.076 R.1875;
    N78 G01 X.875;
    N79 X0.0 Y-.531
    N80 G01 X-.500;
    N81 G00 Z1.0;
    N82 G28;
    N83 M30;
    N84 ;
    N85 (OUTSIDE SUBPROGRAM);
    N86 G91 Z-.050
    N87 G90 G41 G01 X-.250 Y.531 F30.0;
    N88 X.0;
    N89 X.875 Y1.076;
    N90 X1.6875;
    N91 G02 X1.875 Y.8885 R.1875;
    N92 G01 Y.576;
    N93 G02 X1.875 Y-.576 R.688;
    N94 G01 Y-.8885;
    N95 G02 X1.6875 Y-1.076 R.1875;
    N96 G01 X.875;
    N97 X0.0 Y-.531
    N98 G01 X-.500;
    N99 G00 Y.531 (RAPID TO BEGINNING);
    N100 M99;
    %

    %
    O51502;
    N1 X1.25 Y.4375;
    N2 X1.5;
    N3 G02 X1.5 Y-.4375 R.4375;
    N4 G01 X1.25;
    N5 G02 X1.25 Y.4375 R.4375;
    N6 M99
    %

  4. #4
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    Nov 2005
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    28

    Re: Help with Cutter Compensation.

    And just where are you having trouble? N37? I don't see any G40 being used either.

  5. #5
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    Mar 2015
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    4

    Re: Help with Cutter Compensation.

    N66 is where im having the most trouble. I cant get my radius cutting end mill to radius the profile. It goes right beside the edge of the stock and no matter what value i place for the tool in the tooling offset page it keeps cutting about the same distance away.

    What do you mean no G40? Forgive me im not a regualar CNC programmer.

  6. #6
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    Feb 2011
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    259

    Re: Help with Cutter Compensation.

    try putting a d2 on line 87 of the program to get the tool offset for tool 2
    rcs60

  7. #7
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    Jul 2004
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    100

    Re: Help with Cutter Compensation.

    Yeah, I see that D02 is missing. I often lose a part because I forget the "D."
    I am now in the habit of putting the D in right when I call the tool;

    T3 D3 M6

    I have been meaning to edit the quick code to add the D to the tool change as well.
    ​"There is no such thing as a gun free zone."
    Ray Brandes, Ray-Vin.Com, PCB, FL 32408 USA

  8. #8
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    Nov 2007
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    469

    Re: Help with Cutter Compensation.

    I always put "D" in my G41/G42 lines.

  9. #9
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    Jul 2004
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    100

    Re: Help with Cutter Compensation.

    Quote Originally Posted by djr76 View Post
    I always put "D" in my G41/G42 lines.
    I try to, but I forget. G13 usually suffers too.
    ​"There is no such thing as a gun free zone."
    Ray Brandes, Ray-Vin.Com, PCB, FL 32408 USA

  10. #10
    Gold Member
    Join Date
    Mar 2010
    Posts
    1800

    Re: Help with Cutter Compensation.

    Quote Originally Posted by djr76 View Post
    I always put "D" in my G41/G42 lines.
    This is the proper way to do it. After all, you may call a G41 or G42 with a D or tool # that is not the tool you are using.

    Mike
    Two Haas VF-2's, Haas HA5C, Haas HRT-9, Hardinge CHNC 1, Bother HS-300 Wire EDM, BobCAD V23, BobCAD V28

  11. #11
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    Jul 2005
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    12177

    Re: Help with Cutter Compensation.

    Alternatively you may want to use two different Ds for the same tool.
    An open mind is a virtue...so long as all the common sense has not leaked out.

  12. #12
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    Mar 2010
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    1800

    Re: Help with Cutter Compensation.

    Quote Originally Posted by Geof View Post
    Alternatively you may want to use two different Ds for the same tool.
    Not alternatively, that is exactly what I mean. I do use two different offsets for the same tool once in a while within the same tool run.

    Mike
    Two Haas VF-2's, Haas HA5C, Haas HRT-9, Hardinge CHNC 1, Bother HS-300 Wire EDM, BobCAD V23, BobCAD V28

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