Re: [CAD_CAM_EDM_DRO] Cutting forces and Acetal nuts

In a message dated 9/28/2003 7:04:03 PM Central Standard Time,
arvidpublic@... writes:

> to be <$1000. So, does this sound reasonable?
>

IF you can get most of your hardware and lead-screws essentially FREE of
charge! If new ball-screws, those, alone, for this size of a Router Table can
approach $1000! I have never done anything with servos, so I can't comment,
there. But if you designed with appropriate Size 34 bipolar steppers and GOOD
chopper-drives, those alone would be MORE than $1000!

Linear "ball ways" and THK linear bearings, or even Thomson "Class L" round
ways and linear ball-bearings for such can be at least several hundred for this
size of a project! I built an "X-Y router" with a working-area of 1.5 x 3
meter, and a Z-travel of about 300 mm, with a 3.5 hp. 3Ø-400 Hz router (and
power-converter/generator), large Superior Electric steppers and driver-boxes,
Thomson round-ways and linear bearings, and NOT counting the table-frame
itself, I was "out" $35,000. New (professional) stuff like this costs money FAST!
Jan Rowland



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