Since I don't really know the math involved, I guess I don't really understand the problem. I definitely don't have any grasp of the programming difficulties. But from the surface to me I don't see why the blending of movements from X->Y should be any different than U->V, U->Y, or X->V and I don't see why a blend of movements from X->U should be treated any different mathematically even though they are supposed to be parallel movements. The only place I really see a problem is if for example Z and W form a compound axis like on a knee mill, but I think this would technically be an improper use that should be handled in kinematics instead.
I see how there could be a problem with the idea of say a an X-U arc, it isn't possible to physically make an arc with parallel axis. But the math should still work the same, besides who's to say that the two axis are actually oriented this way. ----- Original Message ----- From: "andy pugh" <[email protected]> To: "EMC developers" <[email protected]> Cc: "Enhanced Machine Controller (EMC)" <[email protected]> Sent: Wednesday, May 14, 2014 4:12:00 AM Subject: Re: [Emc-users] [Emc-developers] New Tajectory Planner On 14 May 2014 02:04, Robert Ellenberg <[email protected]> wrote: > I haven't done much with blending over the > ABC / UVW axes since I last looked at it. The method I had planned to use > would work well for line-line blends, but not blends involving arcs. This isn't currently a problem unless you also plan on adding UVW arcs to the system. ie, there _are_ no line arc transitions in UVW. I am not clear on what (for example) an XY arc blend into a VW line would even mean, less still how to blend one. -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
