Stephen Dubovsky wrote: > If you don't need a huge tooth count, why not just put hall sensors on the > backgear (of any lathe so equiped.) You should be able to adjust a pair of > them to give good quadrature. Should be able to come up w/ a creative way > to do the index pulse too? Like sense a keyway, drll and tap the side of a > gear for a small bolt head, or even glue on a little tab. > Here's an article with some pictures of how I did this on a Bridgeport mill, where there was no convenient access to anything that rotated at the same speed as the spindle with and without the back-gear. So, I did exactly as you suggest.
http://pico-systems.com/bridge_spindle.html It works great for rigid tapping, but the same scheme should also work on a lathe. Jon ------------------------------------------------------------------------------ For Developers, A Lot Can Happen In A Second. Boundary is the first to Know...and Tell You. Monitor Your Applications in Ultra-Fine Resolution. Try it FREE! http://p.sf.net/sfu/Boundary-d2dvs2 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
