On Sun, 2013-02-17 at 10:46 -0600, Jon Elson wrote: > Pete Matos wrote: > > I think > > that may be overcomplicated and have been considering making a slot wheel > > that would be attached to the spindle body itself and use some leading edge > > timing with a photointerruptor or other sensor to locate toolchange > > position as well as track spindle speed for rigid tapping operations. > See http://pico-systems.com/bridge_spindle.html for how I added > a spindle encoder to a Bridgeport that had no provision for getting > at the spindle with a traditional encoder. I used the existing gear > on the spindle and added sensors to make it into a quadrature plus > index encoder. It works great for rigid tapping. > > Jon > Jon, I have acquired the sensors .... now all I have to find a round_to_it. I think that scheme will work both on my cinci contourmaster and tucked into the gearbox on the Mazak. :-)
Pete, Just one question after all this really good discussion on your conversion. What did the original implementation use to couple the servos to the ballscrew? I must have missed that someplace along the way. Dave > ------------------------------------------------------------------------------ > The Go Parallel Website, sponsored by Intel - in partnership with Geeknet, > is your hub for all things parallel software development, from weekly thought > leadership blogs to news, videos, case studies, tutorials, tech docs, > whitepapers, evaluation guides, and opinion stories. Check out the most > recent posts - join the conversation now. http://goparallel.sourceforge.net/ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ The Go Parallel Website, sponsored by Intel - in partnership with Geeknet, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials, tech docs, whitepapers, evaluation guides, and opinion stories. Check out the most recent posts - join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
