Re: [CAD_CAM_EDM_DRO] Simple DRO

Scott,
Been there done that:-})

I have used Steve Lindsays program and system with some modifications
similar to what you desire.
The link to my pages for the design and installation is:

http://members.surfsouth.com/~axtein/dro/index.html

By the way, there is also a beta version 5.0 of the program out now that
has a beautiful display option. If after review, please let me know if I
can help.



At 10:39 AM 9/2/01 -0500, you wrote:

>I just thought of this last night and I am sure some one else has to or it
>is already out there but I would like to put a cheap DRO on my Index Milling
>Machine and don't want to spend $600-1200 to do it. What I was thinking of
>was a simple rotary encoder with a shaft of a special diameter and to use a
>wire that is anchored on one end of the movable part of the slide it would
>then be strung along the slide wrapped once around the shaft of the rotary
>encoder and continue along the slide and the anchor at the other end with a
>spring to keep good tension on the wire. The rotary encoder would be
>anchored to the stationary part of the slide assy. When the movable part of
>the slide moves the wire would roll around the encoder shaft and translate
>linear motion into rotary. A encoder with quadrature with 4,000 counts per
>rev and a shaft dia of .63662" would give 0.0005 linear travel per encoder
>step. There would be a little work coming up with a small LCD screen and a
>few buttons and a basic stamp program and controller to run it all.
>
>What do you guys think? Are there some other simple cheap DRO options?
>
>Thanks
>Scott
>
>Scott Riddle
>sariddle@...
>
>

Bubba

OLDER THAN DIRT
Country Bubba
(Actually the inventor of Country and Bubba)

axtein@...
LaGrange, GA

http://www.surfsouth.com/~axtein


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