Re: [CAD_CAM_EDM_DRO] Re: Does control s/w affect machine performance? max step rate

Hi:

>>> > >I'm not saying that super fast pulses don't have their place, but

is there a real need for them ?

Currently Mach2 version 3.0 (unreleased) can drive a Gecko 2003 at 262411
pulses per second. I, like many , thought that this was too much and
wouldn't be used. What I have found in usage is that the 4Mhz base of the 6
channel asyncronous pulsers creates a pulse stream more stable than any I
have seen, the end result meant that the stepper motor tests actually ran
the steppers faster than possible before. While I don't even approach the
max of 262411Hz on my little machines, the motors in testing do run at
amazing speeds with great smoothness. Sometimes, it isn't the end speed
thats important, its the harmonic purity created by the high frequency base.
Master5 users from 8Khz noticed a huge increase in smoothness when Mach1 and
2 went to 25000Hz and higher as their base even if they didn't increase
their end speed due to mechanical limitations.. Seeing the gecko run at
262411Hz is another magnitude of this effect... I think when all is said and
done, its a lot like having a 1000watt stereo. It tends to sound better at
50Watts than a 100Watt amplifier running at 50Watts. Kinda the same effect,
different reasons....

Just my two cents...
Art
www.artofcnc.ca