Re: [CAD_CAM_EDM_DRO] Re: mill threading, Acceleration, Axis

Alan Marconett KM6VV wrote:

> Jon,
>
> Thanks for the reply. It sounds quite evolved. I was thinking more of
> an empirical method? It that's possible. I will examine the speed
> curves again, to see if that can help me.

Yes, lots of people use empirical methods to do this, and it works
fairly well, if you know enough about these systems to interpret
the results properly. Steppers can have some very nasty resonance
problems, and if these are not properly damped out, then you will
get errors no matter how slow (or fast) the acceleration. Microstepping
drives help out by producing less stimulus for the resonances.
Also, the resolution of step timing, and the smoothness of
acceleration ramps can have a big effect on stepper performance.

Jon