CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Stepless in Hawaii

Posted by Jon Elson
on 2002-07-28 22:45:25 UTC
Gene wrote:

> I cant believe that I could replace stepper motors with more powerful
> motors and have lower performance. There must be something else. If I
> have 1.8" step and 10 tpi leadscrews ,then with geckos would I set the
> input scale to 20000? I tried to raise the voltage but no change, just
> the motors got hot.

It is well known that larger motors almost HAVE to have higher inductance
than smaller ones, (current ratings being within sight of each other). Remember
that the rating of all stepper motors is HOLDING torque, ie. torque at ZERO
speed! The more inductance in the windings, the faster the torque curve
drops toward zero. Are you sure you are using the right current setting for
the larger motors?

Jon

Discussion Thread

Gene 2002-07-28 18:11:14 UTC Stepless in Hawaii Jon Elson 2002-07-28 22:45:25 UTC Re: [CAD_CAM_EDM_DRO] Stepless in Hawaii Gene 2002-07-28 23:57:17 UTC Re: [CAD_CAM_EDM_DRO] Stepless in Hawaii studleylee 2002-07-29 09:05:51 UTC Re: Stepless in Hawaii studleylee 2002-07-29 09:08:59 UTC Re: Stepless in Hawaii