Re: mill threading, Acceleration, Axis

Ballendo,

On the other hand, the less settings I change, the less I forget! That
does indicate that I DO need SPI's for EACH axis. In the program I am
working on to move the rotary table (yeah, it went a little further), I
can select ONE axis to move from XYZ and ABC. The ABC's are the same
three axes calculated in DEGREES vs. INCHES for XYZ.

In a related topic, is there a way to determine the "best" acceleration
curve for a stepper motor? I have an acceleration table that I built
based on my "understanding" of Cybernetic Microsystems' CY545 chip, but
I don't know how good my effort might be (different processor, etc). I
might be able to compare accelerations between the CY chip and my
program, not set up for that yet. I probably need to attach an encoder,
to be able to check for "missed steps".

Alan

PS. Bill W., I'm getting closer!


ballendo@... wrote:

>
> Alan,
>
> Also want to mention that of the two choices(leave the S/W set at
> 8000SPI or reset it to 28800 (or 14400), I'd reset it!
>
> The toolpath will be much smaller! (on screen, the length of the file
> will be nearly the same.)
>
> Just remember to set it back when you remove the rotary table from
> the Y axis! Or likely, things will go crunch!
>
> Ballendo