Fusion 360 CAM, Unexplained end mill plunge, arghhh!!


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Thread: Fusion 360 CAM, Unexplained end mill plunge, arghhh!!

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    Default Fusion 360 CAM, Unexplained end mill plunge, arghhh!!

    So I ran my first program today in metal, ran a few in wax and all went fine.

    At the end of a contour 2d tool path, my end mill plunged through my aluminum and into my vice, destroying an expensive end mill, and ruining my vice jaw.

    Looking at the code that did it, I don't quite understand why.

    I am running Mach3, so I used the generic Mach3 post in Fusion 360.

    Can anyone help me understand what happened? It happened somewhere between the last 2 or 3 lines of this code below. Any help would be greatly appreciated! I looked up the codes and its not clear to me why this happened.

    Code:
    (2D CONTOUR1)
    M5
    M9
    M1
    T31 M6
    S2300 M3
    G54
    M8
    G0 X1.5675 Y0.2935
    G43 Z0.6 H31
    Z0.2
    G1 Z0.0394 F5.
    Z-1.6729 F4.
    G19 G2 Y0.2435 Z-1.7229 J-0.05 K0.
    G1 Y0.1935 F5.
    G17 G3 X1.6175 Y0.1435 I0.05 J0.
    G1 X3.1136 F9.
    G2 X3.3636 Y-0.1065 I0. J-0.25
    G1 Y-3.4135
    G2 X3.1136 Y-3.6635 I-0.25 J0.
    G1 X0.1214
    G2 X-0.1286 Y-3.4135 I0. J0.25
    G1 Y-0.1065
    G2 X0.1214 Y0.1435 I0.25 J0.
    G1 X1.6175
    G3 X1.6675 Y0.1935 I0. J0.05 F5.
    G1 Y0.2435
    G19 G3 Y0.2935 Z-1.6729 J0. K0.05
    G0 Z0.6
    G17
    G28 G91 Z0.
    G90


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  2. #2
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    Default Re: Fusion 360 CAM, Unexplained end mill plunge, arghhh!!

    Run the Gcode thru a G-code visualizer CAMotics

    Been doing this too long


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    Default Re: Fusion 360 CAM, Unexplained end mill plunge, arghhh!!

    G28 G91 Z0.

    What location is stored for the G28 parameter?



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    Default Re: Fusion 360 CAM, Unexplained end mill plunge, arghhh!!

    Quote Originally Posted by 109jb View Post
    G28 G91 Z0.

    What location is stored for the G28 parameter?

    What he said, the G28 is a return to home command.

    Everything in moderation, including moderation.


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    Default Re: Fusion 360 CAM, Unexplained end mill plunge, arghhh!!

    Quote Originally Posted by 109jb View Post
    G28 G91 Z0.

    What location is stored for the G28 parameter?
    Thanks!

    I don't have any homing setup becasue I don't have limit switches yet. So my G28 is 0,0,0

    I guess I should remove that whole line then? I dont' see what I would need the G91 for at that point in the program. So is it best to just remove the whole line?



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    Default Re: Fusion 360 CAM, Unexplained end mill plunge, arghhh!!

    You can home in places, what just means park the machine somewhere where it wont crash with the Z at the top of it's travel and hit the home button, problem solved

    <img src="https://ivxo1q-dm2305.files.1drv.com/y4mENMmTr_Cabc7pR0FUdB6gtbADq2JbuG4_rGy0eBQvLJx19pTi6TqMUIJN0xgOyDIc0gWoxYhS38HpbSTFGdfaK-o42IOU6jczrhDpfpCOTNGL1X6hvZCbgj0y35gqmq1YGTrWwShYGV-C7lXA2esy0Pi_WfnBSyroDLSGXwce4uSr1U7op7srdi78rispHCa_K4aFlTlJPVkkNWMfgh_Tg?width=60&height=60&cropmode=none" width="60" height="60" />

    Being Disabled is OK CNC is For fuN


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Fusion 360 CAM, Unexplained end mill plunge, arghhh!!

Fusion 360 CAM, Unexplained end mill plunge, arghhh!!