Understanding & Selecting gear pinions - setting the steps per mm[inch]

[Gerald D]

Originally Posted by David Bryant

Hi
Just redid calcs and set the new numbers into Mach3 put it all back together, still out by 1-2mm in 1000. ???

Did many of you guys get the exact number or does everyone set up by adjusting afterwards?

Cheers
David

Have got 5 tables running with 3 different motor/gearbox combinations and 2 different rack suppliers/pitches. ALL of them were set to the calc and needed no tweaking afterwards.

[David Bryant]

Thanks Gerald That is what I expected. I will keep looking.
Cheers
David

[sensei]

Please somebody give me an advice. If my Motors 86HS9802 is
200 steps * 10 microstep = 2000
2000 * 3 times belt reduction = 6000 steps per rev
travel per rev = 3.14159265 (tooth distance = Pi) * 30 tooth = 94.2477796

steps per mm = 6000 / 94.2477796 = 63.6619662
what "Move speed mm per minute" and what "Min freq. kHz" is ok to use thank you

[danilom]

These are same as mine, I use Velocity = 18000 , acceleration = 600, this works with 25khz kernel speed.

[sensei]

thanks Danilo ... did you cut at that speed and what materials

[danilom]

Those are rapid move G0 feedrates. For cutting I rarely use over 4000mm/min

[IamDave]

Was this whole conversation, a discussion on what Mach 3 does automatically for you when you tune the motors?