Re: CNC development - 50's/00's
- From: Cliff <Clhuprich@xxxxxxx>
- Date: Wed, 02 Nov 2005 19:48:29 -0500
On 2 Nov 2005 07:17:26 -0800, "Pete" <pw2@xxxxxxxxxxxx> wrote:
>Hi folks,
> As part of a CAD/CAM study module I'm undertaking at the
>moment, I'm required to write an essay on the history of CNC machines.
>Now, I don't want anyone to do my homework for me, and I've already
>amassed a wealth of data on the historical development of automated and
>NC machines up to the first Parsons/MIT CNC prototype, but I'm at a bit
>of a loss as to where to go from there. Can anyone suggest
>websites/online resources that might detail significant steps in the
>development of CNC machine tools from, say, the mid-fifties up to the
>present day? Any subscribers to this group old enough to know about
>this subject from first-hand experience?
>Thanks in advance,
>Pete.
The first machines were "numerically controlled"
(numerical control), not CNC. Many welders were thus as well.
The early machines used "tab sequential" data formats. The word
address format came later. THEN CNC.
No computers involved in their operation. The Parsons machine
is, no doubt, an example of this.
The first such machine that I operated & programmed had a GE
control on it .... serial number 53 IIRC ... and was all stepping
switches with one *small* vacuum tube (in a voltage regulator)
and some large plate-type (Selenium?) rectifiers.
BTW, There's a museum in Cincinnati and the American Precision
Museum in Windsor, Vermont. The Smithsonian may well have
quite a bit too. Some of that may help if you search ...
--
Clif
.
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- From: Pete
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