Re: Max stepper motor speed - rpm

I dont not get where you are coming from. If you looked at what I
wrote I was talking about a max capability of the driver and I was
only at 100 s/S. Not the 400s/S you are talking about???
As far as Accel and Decel, yes I know it takes additional torque.
That would all be set from the controller software. The system would
have to be tested out to determine exact accel and decel
capabilities that would then be set in the software.
I would hope that a machine you would build would not have "snags"
in its axis. Ouch! All my axis are on THK linear precision rails
that are all mounted on a solid 400lb tube base that has been
machine flat.
I think I have a good CLUE as to how to build the machine. I used to
work at a machine tool company and did design and structural FEA
analysis of the machines. We did machine tools up to 1,000Hp
spindles and high speed machines. 40,000 Rpm 50Kw spindles on
machines with linear motors with accelerations at ~2G.

I just wanted a little cross check on the driver math.

--- In CAD_CAM_EDM_DRO@yahoogroups.com, JanRwl@A... wrote:
>
> In a message dated 8/12/2005 1:59:09 P.M. Central Daylight Time,
> sariddle@l... writes:
>
> This would give me good speed capabilities when routing on
wood.<<
>
>
> Scott: Do you have ANY clue about the need to ACCELERATE and
DECELERATE a
> stepper motor when using more steps/second than about 400 s/S?
If you are not
> VERY skilled with the math and how to "ramp" step-rates up AND
down, and
> your machine is not "perfectly" smooth and snag-free, FORGET
about it!
>
>
> [Non-text portions of this message have been removed]