On Thu, 2011-02-03 at 21:21 +0800, Yi-Shin Li wrote: > On Thu, Feb 3, 2011 at 2:44 PM, John L. Craddock < > john.cradd...@xitech.com.au> wrote: > > > > > > -----Original Message----- > > > > > > http://www.youtube.com/watch?v=BraEMAu5UkY > > > Video clip for plasma cutting for 6mm mild steel. It's with > > > EMC2, a USB based THC/motion interface, and 3Amp/axis > > > low-cost micro-stepping drivers. > > > The Plasma Cutter is HYPERTHERM PowerMax 45 with machine > > > interface. The EMC2 is patched with NURBS motion and S-Curve > > > velocity profile. > > > -- > > > Yishin Li > > Very interesting Yi-Shin. Can you tell us a bit about the USB THC? I > > couldn't see any initial height sensing mechanism from the video. > > Best > > John C > > > > The prototype machine lacks Z axis sensor for initial height > probing. Currently, we use manual touch-off for initial height sensing, > which is quiet inconvenient. We are drafting the mechanical design for > initial height sensing. Any advice would be appreciated. > Regards, > Yishin
I'm wondering what the USB/THC loop latency is. A flat constant thickness plate might not tax the system enough to bring out the true loop behavior. But so far, your machine seems to work very well, good job. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA ------------------------------------------------------------------------------ Special Offer-- Download ArcSight Logger for FREE (a $49 USD value)! Finally, a world-class log management solution at an even better price-free! Download using promo code Free_Logger_4_Dev2Dev. Offer expires February 28th, so secure your free ArcSight Logger TODAY! http://p.sf.net/sfu/arcsight-sfd2d _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
