Re: [CAD_CAM_EDM_DRO] re: CncPRO top speed limit was Re: "metric" ballscrews? , and other misc.

AH! That clears it up!

Thanks.
Smoke
-----Original Message-----
From: ballendo@... <ballendo@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Saturday, December 09, 2000 11:16 PM
Subject: [CAD_CAM_EDM_DRO] re: CncPRO top speed limit was Re: "metric"
ballscrews? , and other misc.

>Smoke,
>
>When I've got a system running one S/W package at 600IPM, and then I
>switch to CncPRO and it tells me (after I've entered and 'fiddled
>with' the params of step size, accel, etc.) that the top speed is
>145IPM, I am going to look at CncPRO as the culprit!
>
>The 'mechanical system'(including drives) IS capable of 600IPM! And I
>believe CncPRO is capable of the step rates necessary (from others
>experiences). The Program has "decided" that my system will only go
>145IPM...
>
>Hope this helps.
>
>Ballendo
>
>P.S. I thought maybe 'slow computer' was the problem... Switched to a
>pentium 366; same problem!
>
>>If the "limit" for your system is set at 200 IPM using a .2" pitch
>>on the lead screw, then with the same imposed limit, changing ONLY
>>the screw pitch to .6" pitch would triple the fast rate to 600 IPM.
>>Smoke
>
>P.S.S. And also vastly reduce the torque available to move the
>axis!!! If steppers are involved, we just went outside the stepper
>torque curve!
>
>
>
>
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