Messages

1

General Mach Discussion / Re: Mach 3 motor tuning

« on: March 18, 2017, 02:30:37 AM »

ok davek. thanks again. you ve been really helpful. if i find a solution on how to reduce vibrations i ll post it here, but probably i ll go for the smaller nemas.

2

General Mach Discussion / Re: Mach 3 motor tuning

« on: March 17, 2017, 07:13:47 AM »

So generally speaking servos are more accurate than steppers?

3

General Mach Discussion / Re: Mach 3 motor tuning

« on: March 17, 2017, 05:12:15 AM »

thanks Davek,

all working good now

I just think that my motors are way too big. I cant get them to work smoothly at any speed.

4

General Mach Discussion / Re: Mach 3 motor tuning

« on: March 17, 2017, 02:28:39 AM »

My pinions pitch diameter is 25mm so i think it moves 78.5mm per rev. My microstepping settings are 6400. That is 600*6400 =3840000 steps for 78.5 mm so my steps per mm must be 3840000/78.5 = 48917,197.  Is that right?

5

General Mach Discussion / Re: Mach 3 motor tuning

« on: March 16, 2017, 11:31:08 AM »

Thank for your reply Davek,

My motors gear is 1/3 ratio to the big gear which is attached to a small pinion which is 1/3 ratio to the big gear (as you can see at the pic i made with paint  ). So if i get this right and if my motors 1 turn is 200 steps and my pinions diameter is 25mm, i need 600 steps to turn the pinion 1 full turn, which is π*diameter=78.5 mm. Is that right?

I hope it wasn' t too long...

Thanks in advance

6

General Mach Discussion / Mach 3 motor tuning

« on: March 15, 2017, 04:23:43 AM »

Hi everyone,

im new to cnc and i m building a 1.20 m by 1.80 m cnc using r&p system. i m running mach3 on an old toshiba laptop with windows xp and it seems to be working fine. My motors are nema 34 1600oz and i cant tune them to run smoothly (lots of vibration). Anyone knows how can i set the step per unit, vel and accel right? (Motor drivers are set to 1600 microstep setting)