Re: Which is the best election for...?

Wow, I'm impressed!
(how old are you? -must be at least 150 yrs old. :)
Pres - a young 'un, born in 1941.

--- In CAD_CAM_EDM_DRO@yahoogroups.com, JanRwl@... wrote:
>
> 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]
>