On Friday 12 April 2013 13:36:59 Jon Elson did opine: > Gene Heskett wrote: > > Humm, now that you mention that, I read something similar on the net a > > few years agom from somebody at Gecko. Could have been the same > > person I'd have to assume. > > Mariss is the designer and owner of Gecko, and an awesome engineer. > > > Which is 17 amps more than my lathe spindle has. I wonder if that > > could make me a REAL variable speed spindle. This one runs out of > > steam when the steel is above 5/8" in diameter. Supposedly a 250 > > watt motor, older 7zx12. I'd like to take it up to shaving 1.75" to > > 2" stock. Could that reverse w/o needing to toggle a 4pdt relay? > > Yes. I use one of my servo amps to run the spindle of my minimill, and > it does > reversing under computer control when rigid tapping. If you have some > kind of spindle speed sensing or spindle encoder, then you could have > closed- > loop spindle speed control. > > Jon
I don't have that on the mill, very limited space to install, and a very dirty environment inside the gear case. Lots of flying grease. Which doesn't help, and may hinder because grease deteriorates some plastics, I've lost the hubs out of 2 of those "nylon" gears now. Just one of the reasons why that mill may yet get replaced to a grizzly go704. > > ------------------------------------------------------------------------ > ------ Precog is a next-generation analytics platform capable of > advanced analytics on semi-structured data. The platform includes APIs > for building apps and a phenomenal toolset for data science. Developers > can use our toolset for easy data analysis & visualization. Get a free > account! http://www2.precog.com/precogplatform/slashdotnewsletter > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! My views <http://www.armchairpatriot.com/What%20Has%20America%20Become.shtml> To Perl, or not to Perl, that is the kvetching. -- Larry Wall in <199801200310.taa11...@wall.org> A pen in the hand of this president is far more dangerous than a gun in the hands of 200 million law-abiding citizens. ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
