Re: [CAD_CAM_EDM_DRO] Higher performance systems

Yesamazza@... wrote:

>HI
> I have built a couple of simple low power stepper systems and this has
>inspired me to do something higher performance. I like steppers in that they
>are brushless high torque and simple but want closed loop high speed
>performance. The servo system I was thinking of was the Geckos for there low cost
>easy setup. I wonder about there accuracy and still they have lower voltage than
>what I would think. I would like to achieve 500-1000 IPM rapids with a 5 lead
>screw. A direct board connection may be the way to go to open up the choice
>of amplifiers. What have some of you done for higher performance machines and
>what kind of results have you achieved?.. I have machinery and machining,
>g-code ect back ground some electronics and test equipment with little computer
>knowledge. Any suggestions? Thanks Josh
>
>

1000 IPM? What kind of machine? For a light weight gantry router, this
might
be doable, but quite difficult. For a Bridgeport-sized machine, I don't
think
this is very practical. It will take HUGE force to accelerate the
machine to
that velocity before it reaches the end of travel.

Unless the machine is very light, the Gecko drives don't deliver enough
power.
The peak rating is under 2 HP. You may need more than that for even a light
router.

Why do you feel you need these sorts of speeds? Just to prove you can
do it?

As for the accuracy of Gecko drives, they are as accurate as any servo
system,
if properly set up. If there is interference on the encoder signals
causing it to
lose steps, then you need to solve that. Some users have run into this sort
of trouble, but it is solvable.

Jon