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  1. #1
    jonm's Avatar
    Location unknown. Last Activity: 19-06-2011 Has been a member for 7-8 years. Has a total post count of 89.
    hi
    what speed can i expect from a wood router running 3nm nema 23 steppers on 3 axis, using the diycnc sytem 3+ board, 2 amp per phase
    24 volt power supply , i can only get about 80mm per min in mach 3 painfully slow

  2. #2
    :feedback:

    More info needed.
    What screws and pitch, what microstepping selected ?

    .
    John S -

  3. #3
    Microstepping resolution? lead of the screw? or motor RPM? Any gearing or direct drive?
    Type of screw Lead or ball?

    Quote Originally Posted by jonm View Post
    hi
    what speed can i expect from a wood router running 3nm nema 23 steppers on 3 axis, using the diycnc sytem 3+ board, 2 amp per phase
    24 volt power supply , i can only get about 80mm per min in mach 3 painfully slow

  4. #4
    jonm's Avatar
    Location unknown. Last Activity: 19-06-2011 Has been a member for 7-8 years. Has a total post count of 89.
    hi
    1/8 step, 3mm pitch one start trapezioid screw, direct drive

  5. #5
    That is very slow, you should get far better speed than that.
    Is this while cutting or rapid moves?

    Quote Originally Posted by jonm View Post
    hi
    1/8 step, 3mm pitch one start trapezioid screw, direct drive

  6. #6
    jonm's Avatar
    Location unknown. Last Activity: 19-06-2011 Has been a member for 7-8 years. Has a total post count of 89.
    hi
    just got the router going have a pen fixed to the z so just drawing with g code , as the z axis travels along the steppers pitch ( as in sound) gets higher every two or three seconds
    Last edited by jonm; 24-10-2009 at 01:00 AM.

  7. #7
    That sounds like acceleration could be way way way too low - if the pitch gets higher every so often, then it's probably ramping up.

  8. I would expect those steppers, even on 24v, to handle 2000 full steps/sec easily, thats 10rps, 600rpm or 1800mm/min with little load...

    80mm/min = 26rpm = 0.43rps, 86 full steps/sec

    have you told MACH3 you are using 1/8 step?

    It does suggest your MACH3 settings are wrong...

  9. #9
    Quote Originally Posted by irving2008 View Post

    It does suggest your MACH3 settings are wrong...
    Just about to say the same thing....

    Take a look at the attached image which are the MACH3 motor tuning settings for my router and let us know what figures you have, don't use these settings as they will be incorrect for your machine.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  10. #10
    jonm's Avatar
    Location unknown. Last Activity: 19-06-2011 Has been a member for 7-8 years. Has a total post count of 89.
    hi irving
    i have the "steps per " in mach set to 533.3
    200 X 8 = 1600 divided by the screw pitch which is 3mm = 533.3
    maybe i am missing something here

    resolution seems good i drew a 300mm diam circle and measured it to exactly 300mm

    but the speed is very slow

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