2010/11/18 Andy Pugh <[email protected]>: > On 18 November 2010 07:34, Viesturs Lācis <[email protected]> wrote: > >> if that is just a base for machine, I suspect that the machine itself >> also will be very massive and very heavy to provide for rigidity and >> vibration damping in order to achieve the high precision in >> hard-to-machine materials. so the question is - what kind of >> bearings/slides are there to be used and what kind of actuators are to >> be used for such a machine? the same old Hiwin rails, but 3 or 4 >> instead of one and same old ballscrews with some extreme 10" diameter? > > Have you seen this new-build from Dean Smith and Grace? It seems to > use linear tracks: > http://www.deansmithandgrace.co.uk/icms_assets/files/Travelling_Gantry_Machine.pdf >
Wow!!! No, I had not seen anything like that, thanks for sharing!. This article just keeps on raising more questions! I would appreciate, if anyone could share their insights. 1) What is the point to have Z axis and also W axis in one machine? Either of them changes tool's position along Z axis. Using them both simultaneously does not make sense to me. 2) Ok, there are ballscrews for Z and W axis. Where can I find some more information about the hydraulic counter-balancing? What is it's purpose and how it works? 3) Any ideas about the precision of this monster? 4) I am curious about the approximate number in the contract :)) Article says multi-million... It seems to me that those guys can mill a car's bodywork from a single piece of material. Those guys that have to make the clay models for each new model would be happy to have this little friend and get a chance for A LOT of poker games. Or whatever they prefer. /vie ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today http://p.sf.net/sfu/msIE9-sfdev2dev _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
