Machsupport Forum

Mach Discussion => General Mach Discussion => Topic started by: leversole on March 11, 2016, 04:42:45 PM

Title: Steps per inch
Post by: leversole on March 11, 2016, 04:42:45 PM

Please don't yell at me!  ;D ;D

I have looked at 30 or more posts on steps per inch, just when I think I've got , I am confused again!

1.8deg motors is 200 steps/rev...microstepping makes this 2000 steps/rev.

3mm belt and 20t pulley = .11811 inches (3mm) per tooth * 20 teeth = 2.362inches/rev

2000 microsteps / 2.362 = 846.74 pulses/inch


Do I have it right..

Thanks...

Title: Re: Steps per inch
Post by: joeaverage on March 11, 2016, 07:05:53 PM

Hi Leveresole,
sounds right to me. I take it your table/tool or whatever is attached direct to the belt? No leadscrews?

Craig

Title: Re: Steps per inch
Post by: leversole on March 11, 2016, 07:44:18 PM

Yes! Leadscrew on the Z...

I just tonite changed from the TinyG controller to Mach3...I am loving it, playing with the X,Y, and X, have not cut anything yet...next step is to hook up my touch plate...then tomorrow, the limits, and I should be good to go!

Title: Re: Steps per inch
Post by: joeaverage on March 11, 2016, 07:53:35 PM

Hi Leversole,
obviously with a leadscrew on z axis settings will be different to your xy settings. Sounds like you are cutting thru the confusion.

Craig

Title: Re: Steps per inch
Post by: leversole on March 11, 2016, 09:20:20 PM

Thanks Joe...yeah, did the calcs on the z-screw...actually wired up the touch probe and did a test cut of just a few vCarved letters, all is well!

the xBox controller is freaking awesome!!! I spent an hour just jogging the machine around with the xBox joysticks!!

Title: Re: Steps per inch
Post by: joeaverage on March 11, 2016, 10:03:36 PM

Hi,
that's great, its a lot of fun when it starts coming together but don't worry there is still plenty of time
for things to stuff up...lol

Craig

Title: Re: Steps per inch
Post by: leversole on March 12, 2016, 09:26:22 PM

Quote from: joeaverage on March 11, 2016, 10:03:36 PM

Hi,
that's great, its a lot of fun when it starts coming together but don't worry there is still plenty of time
for things to stuff up...lol

Craig

Look at my latest post...I think I am officially "stuffed up"!