optimal setting for eldorado cnc setup.

[Rainman229]

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.

[distshooter]

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


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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.

[PoppaBear10]

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

[Rainman229]

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.