Newbie G-code with laser


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Thread: G-code with laser

  1. #1
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    Default G-code with laser

    I am trying to cut a cylindrical tube with a laser. However, I notice that no matter what feedrate I input, the movement of the tube is always at the same speed. Here is a section of the my code:

    G92 X0 Y0 Z0 A0
    M10
    G1 F200
    G1 X0.001 A180
    G1 X0 A0
    M11

    M10 is for switching on the laser. "A" is the rotary axis. M11 is for switching off the laser. No matter what F number I put, regardless of whether it is 200 as above, or 0.2, the movement speed is always the same. How do I change that? Am I missing something?

    Thanks in advance!

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  2. #2
    Community Moderator Jim Dawson's Avatar
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    Default Re: G-code with laser

    would this work?

    G92 X0 Y0 Z0 A0
    M10
    G1 X0.001 A180 F200
    G1 X0 A0
    M11



  3. #3
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    Default Re: G-code with laser

    Typically the feed rate is on the same line as the first movement as Jim's example shows.



  4. #4
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    Default Re: G-code with laser

    F200 position shouldn't make any difference in either example.

    Remember you are commanding the rotary axis (A axis) to move 200 units per minute. If your units are degrees (typical) then that is 200 degrees per minute. Depending on the job diameter, that may be very slow tool movement.

    Are you using Mach3 or something else? What is the maximum velocity as set for A axis?



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