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IndustryArena Forum > Other Machines > PCB milling > Mach3 users & kernel speed
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  1. #1
    Join Date
    Feb 2009
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    1290

    Mach3 users & kernel speed

    Has anyone come across this formula to calculate the minimum kernel speed you require. It seems if 40ipm cutting and 80ipm rapids are all you need then a kernel speed of 26K should do.


    If you want to calculate out your max pulse frequency start with the max velocity of your machine.

    Max_Velocity(IPM) * Steps/Unit = max_step_min (a.k.a. #steps in one minute at max velocity)
    max_step_min / 60 = max_pulse_frequency

    Your kernel frequency needs to the the lowest choice you have that is greater than your max_pulse_frequency.

  2. #2
    Join Date
    Mar 2003
    Posts
    35538
    Quote Originally Posted by Drools View Post
    It seems if 40ipm cutting and 80ipm rapids are all you need then a kernel speed of 26K should do.
    Depends on your steps unit. If it's really high, then you may need a higher kernel speed.

    I use 25Khz and have 175ipm rapids. Max is about 220-230 with 6400 steps/unit.
    Gerry

    UCCNC 2017 Screenset
    http://www.thecncwoodworker.com/2017.html

    Mach3 2010 Screenset
    http://www.thecncwoodworker.com/2010.html

    JointCAM - CNC Dovetails & Box Joints
    http://www.g-forcecnc.com/jointcam.html

    (Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management)

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