Re: [CAD_CAM_EDM_DRO] EMC Acceleration

Tom Hubin wrote:

>Hello Dave,
>
>
>
>>Interesting, I go the other way on acceleration for my Taig mill running
>>from TurboCNC. I have the acceleration up around 200,000Hz with 1/4
>>stepping, 20tpi screws, 1.8deg steppers and a rapid speed of about
>>75ipm, start speed of 0.19ipm (50hz). I think thats about 12.5ipm per
>>second acceleration. Rapid speed is reached in 1/10th of a second.
>>
>>
>
>I have not checked your figures to calculate acceleration but
>12.5ipm/sec would require 6 seconds to accelerate from 0 to 75ipm.
>
>

Do'h, sorry, I knew something sounded odd there, but it was too early in
the morning for physics. I left out the conversion from in/s/s to in/min/s

That should be:
200,000 step/s/s * 0.0000625 in/step = 12.5 in/s/s
12.5in/s/s * 60 s/min = 750 i/min/s

For an acceleration of 750 ipm per second.

Time to reach rapid speed:
750i/min/s / 75in/min = 0.10s

So 0.10 seconds to get to rapid speed.

Dave