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Circular profile while machined comes like a polygon.!!!

Discussion in 'CNC Mills/Routers' started by vikramprasad, Jun 9, 2017.

  1. vikramprasad

    Builder

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    I have tried sketchucam which does the circular profile without any problem, when I generate tool path from fusion 360 it does not show any problem while simulation, but when I machine it circular profile comes like a polygon. Not able to identify the problem...!!! I am using grbl 0.9
    forum.jpg WhatsApp Image 2017-06-09 at 14.07.19.jpeg
     
  2. Joe Santarsiero

    Joe Santarsiero OB addict
    Staff Member Moderator Builder

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    Are you drawing this part in fusion? Does your gcode output have I J K or G2/G3?

    Joe
     
  3. vikramprasad

    Builder

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    Yes, I have drawn and generated the toolpath in fusion..I have attached the fusion file ..

    This is the g code

    %
    (corner)
    (T1 D=8 CR=0 - ZMIN=-18 - flat end mill)
    G90 G94
    G17
    G21

    (2D Contour1)
    M9
    T1 M6
    S10000 M3
    G54
    M9
    G0 X179.649 Y48.354
    Z15
    Z5
    G1 Z-1.2 F1920
    X179.642 Y48.353 Z-1.304
    X179.622 Y48.35 Z-1.407
    X179.588 Y48.346 Z-1.506
    X179.542 Y48.339 Z-1.6
    X179.485 Y48.331 Z-1.687
    X179.417 Y48.321 Z-1.766
    X179.339 Y48.309 Z-1.835
    X179.253 Y48.297 Z-1.893
    X179.16 Y48.283 Z-1.939
    X179.062 Y48.269 Z-1.973
    X178.96 Y48.254 Z-1.993
    X178.857 Y48.239 Z-2
    X178.065 Y48.124
    G3 X177.389 Y47.217 I0.115 J-0.792
    G2 X179 Y25 I-152.389 J-22.217
    G1 Y0
    G2 X175 Y-4 I-4
    G1 X0
    G2 X-4 Y0 J4
    G1 Y175
    G2 X0 Y179 I4
    G1 X25
    G2 X177.389 Y47.217 J-154
    G3 X178.296 Y46.54 I0.792 J0.115
    G1 X179.088 Y46.656
    X179.191 Y46.671 Z-1.993
    X179.293 Y46.686 Z-1.973
    X179.391 Y46.7 Z-1.939
    X179.484 Y46.713 Z-1.893
    X179.57 Y46.726 Z-1.835
    X179.648 Y46.737 Z-1.766
    X179.716 Y46.747 Z-1.687
    X179.773 Y46.756 Z-1.6
    X179.819 Y46.762 Z-1.506
    X179.852 Y46.767 Z-1.407
    X179.873 Y46.77 Z-1.304
    X179.879 Y46.771 Z-1.2
    G0 Z5
    X179.649 Y48.354
    G1 Z-3.2 F1920
    X179.642 Y48.353 Z-3.304
    X179.622 Y48.35 Z-3.407
    X179.588 Y48.346 Z-3.506
    X179.542 Y48.339 Z-3.6
    X179.485 Y48.331 Z-3.687
    X179.417 Y48.321 Z-3.766
    X179.339 Y48.309 Z-3.835
    X179.253 Y48.297 Z-3.893
    X179.16 Y48.283 Z-3.939
    X179.062 Y48.269 Z-3.973
    X178.96 Y48.254 Z-3.993
    X178.857 Y48.239 Z-4
    X178.065 Y48.124
    G3 X177.389 Y47.217 I0.115 J-0.792
    G2 X179 Y25 I-152.389 J-22.217
    G1 Y0
    G2 X175 Y-4 I-4
    G1 X0
    G2 X-4 Y0 J4
    G1 Y175
    G2 X0 Y179 I4
    G1 X25
    G2 X177.389 Y47.217 J-154
    G3 X178.296 Y46.54 I0.792 J0.115
    G1 X179.088 Y46.656
    X179.191 Y46.671 Z-3.993
    X179.293 Y46.686 Z-3.973
    X179.391 Y46.7 Z-3.939
    X179.484 Y46.713 Z-3.893
    X179.57 Y46.726 Z-3.835
    X179.648 Y46.737 Z-3.766
    X179.716 Y46.747 Z-3.687
    X179.773 Y46.756 Z-3.6
    X179.819 Y46.762 Z-3.506
    X179.852 Y46.767 Z-3.407
    X179.873 Y46.77 Z-3.304
    X179.879 Y46.771 Z-3.2
    G0 Z5
    X179.649 Y48.354
    G1 Z-5.2 F1920
    X179.642 Y48.353 Z-5.304
    X179.622 Y48.35 Z-5.407
    X179.588 Y48.346 Z-5.506
    X179.542 Y48.339 Z-5.6
    X179.485 Y48.331 Z-5.687
    X179.417 Y48.321 Z-5.766
    X179.339 Y48.309 Z-5.835
    X179.253 Y48.297 Z-5.893
    X179.16 Y48.283 Z-5.939
    X179.062 Y48.269 Z-5.973
    X178.96 Y48.254 Z-5.993
    X178.857 Y48.239 Z-6
    X178.065 Y48.124
    G3 X177.389 Y47.217 I0.115 J-0.792
    G2 X179 Y25 I-152.389 J-22.217
    G1 Y0
    G2 X175 Y-4 I-4
    G1 X0
    G2 X-4 Y0 J4
    G1 Y175
    G2 X0 Y179 I4
    G1 X25
    G2 X177.389 Y47.217 J-154
    G3 X178.296 Y46.54 I0.792 J0.115
    G1 X179.088 Y46.656
    X179.191 Y46.671 Z-5.993
    X179.293 Y46.686 Z-5.973
    X179.391 Y46.7 Z-5.939
    X179.484 Y46.713 Z-5.893
    X179.57 Y46.726 Z-5.835
    X179.648 Y46.737 Z-5.766
    X179.716 Y46.747 Z-5.687
    X179.773 Y46.756 Z-5.6
    X179.819 Y46.762 Z-5.506
    X179.852 Y46.767 Z-5.407
    X179.873 Y46.77 Z-5.304
    X179.879 Y46.771 Z-5.2
    G0 Z5
    X179.649 Y48.354
    G1 Z-7.2 F1920
    X179.642 Y48.353 Z-7.304
    X179.622 Y48.35 Z-7.407
    X179.588 Y48.346 Z-7.506
    X179.542 Y48.339 Z-7.6
    X179.485 Y48.331 Z-7.687
    X179.417 Y48.321 Z-7.766
    X179.339 Y48.309 Z-7.835
    X179.253 Y48.297 Z-7.893
    X179.16 Y48.283 Z-7.939
    X179.062 Y48.269 Z-7.973
    X178.96 Y48.254 Z-7.993
    X178.857 Y48.239 Z-8
    X178.065 Y48.124
    G3 X177.389 Y47.217 I0.115 J-0.792
    G2 X179 Y25 I-152.389 J-22.217
    G1 Y0
    G2 X175 Y-4 I-4
    G1 X0
    G2 X-4 Y0 J4
    G1 Y175
    G2 X0 Y179 I4
    G1 X25
    G2 X177.389 Y47.217 J-154
    G3 X178.296 Y46.54 I0.792 J0.115
    G1 X179.088 Y46.656
    X179.191 Y46.671 Z-7.993
    X179.293 Y46.686 Z-7.973
    X179.391 Y46.7 Z-7.939
    X179.484 Y46.713 Z-7.893
    X179.57 Y46.726 Z-7.835
    X179.648 Y46.737 Z-7.766
    X179.716 Y46.747 Z-7.687
    X179.773 Y46.756 Z-7.6
    X179.819 Y46.762 Z-7.506
    X179.852 Y46.767 Z-7.407
    X179.873 Y46.77 Z-7.304
    X179.879 Y46.771 Z-7.2
    G0 Z5
    X179.649 Y48.354
    G1 Z-9.2 F1920
    X179.642 Y48.353 Z-9.304
    X179.622 Y48.35 Z-9.407
    X179.588 Y48.346 Z-9.506
    X179.542 Y48.339 Z-9.6
    X179.485 Y48.331 Z-9.687
    X179.417 Y48.321 Z-9.766
    X179.339 Y48.309 Z-9.835
    X179.253 Y48.297 Z-9.893
    X179.16 Y48.283 Z-9.939
    X179.062 Y48.269 Z-9.973
    X178.96 Y48.254 Z-9.993
    X178.857 Y48.239 Z-10
    X178.065 Y48.124
    G3 X177.389 Y47.217 I0.115 J-0.792
    G2 X179 Y25 I-152.389 J-22.217
    G1 Y0
    G2 X175 Y-4 I-4
    G1 X0
    G2 X-4 Y0 J4
    G1 Y175
    G2 X0 Y179 I4
    G1 X25
    G2 X177.389 Y47.217 J-154
    G3 X178.296 Y46.54 I0.792 J0.115
    G1 X179.088 Y46.656
    X179.191 Y46.671 Z-9.993
    X179.293 Y46.686 Z-9.973
    X179.391 Y46.7 Z-9.939
    X179.484 Y46.713 Z-9.893
    X179.57 Y46.726 Z-9.835
    X179.648 Y46.737 Z-9.766
    X179.716 Y46.747 Z-9.687
    X179.773 Y46.756 Z-9.6
    X179.819 Y46.762 Z-9.506
    X179.852 Y46.767 Z-9.407
    X179.873 Y46.77 Z-9.304
    X179.879 Y46.771 Z-9.2
    G0 Z5
    X179.649 Y48.354
    G1 Z-11.2 F1920
    X179.642 Y48.353 Z-11.304
    X179.622 Y48.35 Z-11.407
    X179.588 Y48.346 Z-11.506
    X179.542 Y48.339 Z-11.6
    X179.485 Y48.331 Z-11.687
    X179.417 Y48.321 Z-11.766
    X179.339 Y48.309 Z-11.835
    X179.253 Y48.297 Z-11.893
    X179.16 Y48.283 Z-11.939
    X179.062 Y48.269 Z-11.973
    X178.96 Y48.254 Z-11.993
    X178.857 Y48.239 Z-12
    X178.065 Y48.124
    G3 X177.389 Y47.217 I0.115 J-0.792
    G2 X179 Y25 I-152.389 J-22.217
    G1 Y0
    G2 X175 Y-4 I-4
    G1 X0
    G2 X-4 Y0 J4
    G1 Y175
    G2 X0 Y179 I4
    G1 X25
    G2 X177.389 Y47.217 J-154
    G3 X178.296 Y46.54 I0.792 J0.115
    G1 X179.088 Y46.656
    X179.191 Y46.671 Z-11.993
    X179.293 Y46.686 Z-11.973
    X179.391 Y46.7 Z-11.939
    X179.484 Y46.713 Z-11.893
    X179.57 Y46.726 Z-11.835
    X179.648 Y46.737 Z-11.766
    X179.716 Y46.747 Z-11.687
    X179.773 Y46.756 Z-11.6
    X179.819 Y46.762 Z-11.506
    X179.852 Y46.767 Z-11.407
    X179.873 Y46.77 Z-11.304
    X179.879 Y46.771 Z-11.2
    G0 Z5
    X179.649 Y48.354
    G1 Z-13.2 F1920
    X179.642 Y48.353 Z-13.304
    X179.622 Y48.35 Z-13.407
    X179.588 Y48.346 Z-13.506
    X179.542 Y48.339 Z-13.6
    X179.485 Y48.331 Z-13.687
    X179.417 Y48.321 Z-13.766
    X179.339 Y48.309 Z-13.835
    X179.253 Y48.297 Z-13.893
    X179.16 Y48.283 Z-13.939
    X179.062 Y48.269 Z-13.973
    X178.96 Y48.254 Z-13.993
    X178.857 Y48.239 Z-14
    X178.065 Y48.124
    G3 X177.389 Y47.217 I0.115 J-0.792
    G2 X179 Y25 I-152.389 J-22.217
    G1 Y0
    G2 X175 Y-4 I-4
    G1 X0
    G2 X-4 Y0 J4
    G1 Y175
    G2 X0 Y179 I4
    G1 X25
    G2 X177.389 Y47.217 J-154
    G3 X178.296 Y46.54 I0.792 J0.115
    G1 X179.088 Y46.656
    X179.191 Y46.671 Z-13.993
    X179.293 Y46.686 Z-13.973
    X179.391 Y46.7 Z-13.939
    X179.484 Y46.713 Z-13.893
    X179.57 Y46.726 Z-13.835
    X179.648 Y46.737 Z-13.766
    X179.716 Y46.747 Z-13.687
    X179.773 Y46.756 Z-13.6
    X179.819 Y46.762 Z-13.506
    X179.852 Y46.767 Z-13.407
    X179.873 Y46.77 Z-13.304
    X179.879 Y46.771 Z-13.2
    G0 Z5
    X179.649 Y48.354
    G1 Z-15.2 F1920
    X179.642 Y48.353 Z-15.304
    X179.622 Y48.35 Z-15.407
    X179.588 Y48.346 Z-15.506
    X179.542 Y48.339 Z-15.6
    X179.485 Y48.331 Z-15.687
    X179.417 Y48.321 Z-15.766
    X179.339 Y48.309 Z-15.835
    X179.253 Y48.297 Z-15.893
    X179.16 Y48.283 Z-15.939
    X179.062 Y48.269 Z-15.973
    X178.96 Y48.254 Z-15.993
    X178.857 Y48.239 Z-16
    X178.065 Y48.124
    G3 X177.389 Y47.217 I0.115 J-0.792
    G2 X179 Y25 I-152.389 J-22.217
    G1 Y0
    G2 X175 Y-4 I-4
    G1 X0
    G2 X-4 Y0 J4
    G1 Y175
    G2 X0 Y179 I4
    G1 X25
    G2 X177.389 Y47.217 J-154
    G3 X178.296 Y46.54 I0.792 J0.115
    G1 X179.088 Y46.656
    X179.191 Y46.671 Z-15.993
    X179.293 Y46.686 Z-15.973
    X179.391 Y46.7 Z-15.939
    X179.484 Y46.713 Z-15.893
    X179.57 Y46.726 Z-15.835
    X179.648 Y46.737 Z-15.766
    X179.716 Y46.747 Z-15.687
    X179.773 Y46.756 Z-15.6
    X179.819 Y46.762 Z-15.506
    X179.852 Y46.767 Z-15.407
    X179.873 Y46.77 Z-15.304
    X179.879 Y46.771 Z-15.2
    G0 Z5
    X179.649 Y48.354
    G1 Z-17.2 F1920
    X179.642 Y48.353 Z-17.304
    X179.622 Y48.35 Z-17.407
    X179.588 Y48.346 Z-17.506
    X179.542 Y48.339 Z-17.6
    X179.485 Y48.331 Z-17.687
    X179.417 Y48.321 Z-17.766
    X179.339 Y48.309 Z-17.835
    X179.253 Y48.297 Z-17.893
    X179.16 Y48.283 Z-17.939
    X179.062 Y48.269 Z-17.973
    X178.96 Y48.254 Z-17.993
    X178.857 Y48.239 Z-18
    X178.065 Y48.124
    G3 X177.389 Y47.217 I0.115 J-0.792
    G2 X179 Y25 I-152.389 J-22.217
    G1 Y0
    G2 X175 Y-4 I-4
    G1 X139.25
    Z-16
    X123.25
    Z-18 F30
    X51.75 F1920
    Z-16
    X35.75
    Z-18 F30
    X0 F1920
    G2 X-4 Y0 J4
    G1 Y35.75
    Z-16
    Y51.75
    Z-18 F30
    Y123.25 F1920
    Z-16
    Y139.25
    Z-18 F30
    Y175 F1920
    G2 X0 Y179 I4
    G1 X25
    G2 X57.077 Y175.622 J-154
    G1 Z-16
    G2 X72.532 Y171.481 I-32.077 J-150.622
    G1 Z-18 F30
    G2 X128.091 Y139.404 I-47.532 J-146.481 F1920
    G1 Z-16
    G2 X139.404 Y128.091 I-103.091 J-114.404
    G1 Z-18 F30
    G2 X171.481 Y72.532 I-114.404 J-103.091 F1920
    G1 Z-16
    G2 X175.622 Y57.077 I-146.481 J-47.532
    G1 Z-18 F30
    G2 X177.389 Y47.217 I-150.622 J-32.077 F1920
    G3 X178.296 Y46.54 I0.792 J0.115
    G1 X179.088 Y46.656
    X179.191 Y46.671 Z-17.993
    X179.293 Y46.686 Z-17.973
    X179.391 Y46.7 Z-17.939
    X179.484 Y46.713 Z-17.893
    X179.57 Y46.726 Z-17.835
    X179.648 Y46.737 Z-17.766
    X179.716 Y46.747 Z-17.687
    X179.773 Y46.756 Z-17.6
    X179.819 Y46.762 Z-17.506
    X179.852 Y46.767 Z-17.407
    X179.873 Y46.77 Z-17.304
    X179.879 Y46.771 Z-17.2
    G0 Z15
    M9
    M30
    %
     

    Attached Files:

  4. David the swarfer

    David the swarfer OpenBuilds Team
    Staff Member Moderator Builder

    Joined:
    Aug 6, 2013
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    what GUI are you using?
    Why is GRBL not complaining about the Tool change codes in that file?
    maybe the GUI is converting the arc for you?
    I say this because the arc is one piece and GRBL should not have a problem with it.

    you would be better off with this post processor
    GitHub - Strooom/GRBL-Post-Processor: Start
    which does not output toolchanges and other things GRBL does not handle.
     
  5. vikramprasad

    Builder

    Joined:
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    I'm using Universal G code sender....i'll give a try of what you suggested..
     

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