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IndustryArena Forum > MetalWorking Machines > Shopmaster/Shoptask > optimal setting for eldorado cnc setup.
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  1. #1
    Join Date
    Sep 2004
    Posts
    152

    optimal setting for eldorado cnc setup.

    Basicly Trying to find what the best motor settings for mach 2 or 3. The cnc motors and controler are the ones that are from shoptask. ANy help would be great.
    http://www.rainman229.com

  2. #2
    Join Date
    Apr 2006
    Posts
    4

    Shoptask motor settings

    Here are the settings from my Shoptask Tri-Power with acme screws and
    the shoptask CNC package. The step were determined via DRO.

    motor config (MILL) step pins / direction pins

    x Axis 2 / 3
    steps 40000
    velocity 24.366
    accel 2


    y Axis 4 / 5
    steps 40000
    velocity 22.41
    accel 1

    z Axis 6 / 7
    steps 63899
    velocity 3.72
    accel 0.823956


    ----------------------------------------------------

    motor config (LATHE) step pins / direction pins

    x Axis 4 / 5
    steps 40000
    velocity 24.366
    accel 2


    y Axis Not used




    z Axis 2 / 3
    steps 63899
    velocity 23.286
    accel 2

    Yours should be close to this.

  3. #3
    Join Date
    Feb 2005
    Posts
    487
    what are you using steppers or servos??

    To ball park steppers:
    How many steps per rev the moter has (usually 1 step = 1.8 deg), X any micro step settins, x your drive ratio, x your tpi (if using imperial screws). will give you how many steps it takes to move 1 inch.

    Servos:
    Encouder count per rev. x (line count if you have one), x drive ratio x tpi.

    then tell it to move 1 inch, measure what it really moved, devide what you told it to move by what it moved. take that number and multiply to your current steps/unit. (BTW: move back to 0 befor you ajust your steps per inch). Repeat until you moving 1 inch each time. Then go back to 0, and tell it to move 6 inches (on X or Y), measure what it moved and divide that into 6, and it will give you a longer averaging error over travel. If you want to really get it down. then, command a full length axis move, measure and repeat above.

    Scott

  4. #4
    Join Date
    Sep 2004
    Posts
    152
    sorry guys been a little too busy to check in on this.

    I'm running steppers
    right now x and y are at 8000 seems to be right on the money. Z is in the 5000 somewhere

    My biggest problem is not so much the steppers them selves. It's more the max speed. i guess i would need to toy with that on my own.

    trying to figure out the max depth i could cut with a desent speed.

    My max speed at the moment is at .900 sec and i think it should be able to handle .100 pass with no problem.

    Note I mostly work with 6061 alum and some plastics.
    http://www.rainman229.com

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