CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Cheapie import DRO scales for a Mill/Drill Quill?

Posted by Jon Elson
on 2004-06-12 19:52:07 UTC
>
>
>>In the short term, just as a "dumb" DRO...
>>And MAYBE, in the long term, could one be interfaced with a computer (paralell port) as
>>part of a CNC retrofit?
>>
>>
No, these scales can't be used for closed-loop CNC control. They only
read the
position about 3 times a second. You need several hundred updates a second,
at the absolute minimum, for closed-loop positioning control. Also, they
have low resolution for CNC control. Generally, 0.0005", which would be
OK for a router, but is really insufficient for CNC milling.

Jon

Discussion Thread

shyningnight@y... 2004-06-11 20:46:41 UTC Cheapie import DRO scales for a Mill/Drill Quill? caudlet 2004-06-12 07:26:11 UTC Re: Cheapie import DRO scales for a Mill/Drill Quill? Harvey White 2004-06-12 08:38:39 UTC Re: [CAD_CAM_EDM_DRO] Cheapie import DRO scales for a Mill/Drill Quill? Jon Elson 2004-06-12 19:52:07 UTC Re: [CAD_CAM_EDM_DRO] Cheapie import DRO scales for a Mill/Drill Quill? Scott Hamilton 2004-06-13 11:59:54 UTC Re: Cheapie import DRO scales for a Mill/Drill Quill?