Need Help! G41 issue


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Thread: G41 issue

  1. #1
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    Default G41 issue

    Fanuc 0i MD
    Bridgeport/Hardinge GX600 VMC


    Treat me gently, new to Fanuc mill.....


    No conversational on this machine, machining a hex, tool heading off to unpredictable positions?


    clockwise climb mill
    10mm dia cutter
    hex ct 0,0
    D1=10


    G56;
    M6 T1;
    G43 H1;
    M3 S1500;


    G0 X30 Y0;
    Z-5;
    G41 D1;
    G1 X10.97 Y0 F100;
    X5.48 Y-9.5;
    X-5.48 Y-9.5;
    X-10.97 Y0;
    X-5.48 Y9.5;
    X5.48 Y9.5;
    X10.97 Y0;
    G40;
    G0 X30 Y0;


    What am I missing? Is it 'cause the shortest length is close to the cutter dia?


    Cheers, bspear

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  2. #2
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    Default Re: G41 issue

    Looks ok.
    Can you show the obtained toolpath? At least a rough sketch.
    Dia is not an issue in outward machining of a contour.



  3. #3
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    Default Re: G41 issue

    1.0 Inch hex 1/2 endmill. Control comp.

    O1000
    G20
    G0 G17 G40 G49 G80 G90
    (1/2 FLAT ENDMILL|TOOL - 1|DIA. OFF. - 1|LEN. - 1|TOOL DIA. - .5)
    T1 M6
    G0 G90 G54 X-.6 Y1.7 A0. S1000 M3
    G43 H1 Z.25
    M8
    Z.05
    G1 Z-.5 F20.
    G41 D1 Y1.1 F10.
    G3 X0. Y.5 I.6 J0.
    G1 X.2887
    X.5774 Y0.
    X.2887 Y-.5
    X-.2887
    X-.5774 Y0.
    X-.2887 Y.5
    X0.
    G3 X.6 Y1.1 I0. J.6
    G1 G40 Y1.7
    G0 Z.25
    M5
    G91 G28 Z0. M9
    G28 X0. Y0. A0.
    M30

    pictures from Mastercam. The backplot traces tool center, dont let that fool you.


    Attached Thumbnails Attached Thumbnails G41 issue-compedtp-jpg   G41 issue-comped-jpg  


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