reduced feed when immere with 3 axes

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Thread: reduced feed when immere with 3 axes

  1. #1
    fräsmurml's Avatar
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    Hello

    We immerse circular with 3 axis into the part (X,Y,Z) Our Cam doesn’t give out a circle but many single blocks with points. Now it happens that the machine doesn’t run with full feed when immersing. When the machine reaches the full deepness and it has to run with 2 axis, then it speeds up with full feed.

    Here an extract from the program

    N690 S8000 M3
    N695 G0 X0 Y-86 Z160
    N700 Z107
    N705 G1 Z104 F7000
    N710 Y-61
    N715 G2 X0 Y-61 I0 J61
    N720 G1 X-1.219 Y-60.988 Z103.989
    N725 X-2.437 Y-60.951 Z103.979
    N730 X-3.655 Y-60.89 Z103.968
    N735 X-4.871 Y-60.805 Z103.957
    N740 X-6.085 Y-60.696 Z103.947
    N745 X-7.297 Y-60.562 Z103.936
    N750 X-8.505 Y-60.404 Z103.926
    N755 X-9.711 Y-60.222 Z103.915
    N760 X-10.912 Y-60.016 Z103.904
    N765 X-12.109 Y-59.786 Z103.894
    N770 X-13.302 Y-59.532 Z103.883
    N775 X-14.489 Y-59.254 Z103.872
    N780 X-15.67 Y-58.953 Z103.862


    What could be the reason?

    Maybe the machine cannot cope with the calculation?

    Regards



  2. #2
    hapo
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    Hello

    Try it with G54



  3. #3
    fräsmurml's Avatar
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    Try it with G54
    Hello

    You mean G64 or? G54 is the zero point.

    So it’s CFIN and G64 active. Even though CFIN doesn’t work in this case as the radius correction is not active.

    Maybe I should add that it’s TRAORI active.



  4. #4
    hapo
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    Yes, of course I mean G64 (thick fingers and a small keyboard doesn’t go well together) wink.gif

    I cannot imagine that TRAORI could have an influence here because the swivel axis is not involved.



    With this high feed I rather think about the block transitions.
    If G64 doesn’t help you out... maybe try "G641 ADIS=0.2".
    If the contour elements don’t vary in size, then I have the following rule-of-thumb:
    ADIS<smallest element length/2

    With that, the contour accuracy will be softer but it will propably have a positiv effect on the fragmentation of the CAM.

    Maybe BRISK can bring more acceleration...



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reduced feed when immere with 3 axes

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reduced feed when immere with 3 axes