Re: [CAD_CAM_EDM_DRO] Updated DRO using screw threads not pulleys

Hi Doug,

This system was used on old drawing boards of course (remember them??) and I
have used it on a small gear cutter I made. The only problem is that the
width of the pulley has to increase in proportion to the total length of
travel and so, for a large machine, could finish up at a couple of inches or
so. The end pulleys wouldn't necessarily have to be 'threaded' as they could
be made to simply slide along a fixed shaft (this was the method I used and
it worked OK)
Best wishes,

Ian.

----
Ian W. Wright
Sheffield UK

----- Original Message -----
> Instead of using pulleys and bare encoder shafts, substitute screw threads
> everywhere. The wire sits in the grooves of the screw threads.