2013/11/7 <[email protected]> > why doesn't someone try turning the nut not the screw? Bridgeport bosses X > axis screw was bolted to the end of the table >
Oh, there have been attempts to do that. I know that Andy has something like that and I myself also built a machine with fixed ballscrew and rotating nut. The conclusion - I will not do that again unless I really really really really really need that and other alternatives are: none. It requires precise machining of the parts and little more precise assembly. I built a gantry router 2700x1400 mm, it has rack and pinion. There are many examples, where rack and pinion is successfully used for routers and I am satisfied with it. I would like to have less vibration, but I think that having almost 3 m long gantry needed something more than just 180x90 mm extruded aluminium profile to make it stiffer. -- Viesturs ------------------------------------------------------------------------------ November Webinars for C, C++, Fortran Developers Accelerate application performance with scalable programming models. Explore techniques for threading, error checking, porting, and tuning. Get the most from the latest Intel processors and coprocessors. See abstracts and register http://pubads.g.doubleclick.net/gampad/clk?id=60136231&iu=/4140/ostg.clktrk _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
