Kirk Wallace wrote: > I forgot about the brake, but if the knee is counter balanced, it may > not be needed. > > Good point. >> and an encoder in there, and it would be a ROYAL pain to work on this >> stuff inside the knee! >> > > But once it's set up, I'll never need to work on it ever again :) > Until chips fall down the back of the knee and get into the works! No matter how fancy the chip guards are, they still get in there. > When I did get into the knee to fit a Y axis ball screw, I found a lot > of nasty casting burrs. It's like a coral reef in there. My Shizuoka > looks almost as nice inside, as out. I'll try to deburr the inside of > the BP knee before I work in it again. The inside of the knee also seems > to collect a lot of chips. I'm a little surprised the bevel gears can > live with a pile of chips on them. > > They grind them up! Which is, of course, not real good for fine gearing and leadscrews. I got half a trash can of chips out of my Bridgeport when I opened it up for modifications. > I just got another idea. Fit a worm gear to the screw end. A worm shaft > bearing would be mounted to one knee side wall, and a hole just big > enough for a motor shaft on the other side. > Hmmm, that makes a LOT of sense. You'd need an anti-backlash worm drive with an integral thrust bearing, but they actually make such stuff. Likely expensive, though.
Jon ------------------------------------------------------------------------------ OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
