Re: [CAD_CAM_EDM_DRO] Which is the best election for...?

Thunder: I built a large 1.5 x 3 M. CNC "X-Y Router Table" in 1885, so I
can respond to your numbered questions:

In a message dated 11/8/2006 1:03:00 P.M. Central Standard Time,
thunder2kal@... writes:

1) Table/bases/1) T<<
The one I built was for a large cabinet-shop, so I had them build the
"table" to which I only bolted-on the "metal parts". That table was built of Utile
wood (a hard, stabile mahogany-kinda stuff from some far-away jungle I
forget).

2) Lineal movements/joinings<<
I used Thomson linear ball-bearings and case-hardened ways. Have photos, if
you want, but I'd have to send them to you direct, as this forum doesn't
allow that.

3) Motors<<
I assume you mean those to turn the lead-screws (which were 1.5" ball-screws
with double-nuts which allowed for trimming-out backlash). I used large
steppers by Superior electric, and . . .

4) Electronic drivers<<
Superior Electric power-supply/driver packages for those huge motors. This
was a 1.5 x 3 meter table, and the carriage hardware and router-motor
probably weighed about 300 lb. That router-motor was by Perske (German), a 400 Hz.
3-phase motor, power for which was "generated" by a rotary converter
specifically for it by Perske. $$!!!

5) Software<<
I wrote my own, using GWBASIC ("FOR-NEXT loops" and so forth)

6) Other aspects that consider important<<
NEVER AGAIN! Too much work for ONE quasi-retired geriatric with attitude!
Seriously: KISS, frugality, sturdy crating across the Atlantic, etc., etc.
3 phase power! Top of table was Formica-covered particle-board, so was
readily replaceable by user (woodworking shop!) once nuppered by klutzy
programmers, etc.



[Non-text portions of this message have been removed]