2012/11/10 Marius Liebenberg <mar...@mastercut.co.za>: > I dont think your idea is a good practical idee for a production > machine. The torch does touch off thousands of times and the loose nuts > will wear out in no time. There is nothing wrong with a well designed > floating head and in my opinion it is the best possible pactise to date.
Ok, thanks, I will once again think over my approach! The thing is that the floating head has to be designed and manufactured, but I already am over the project deadline, while giving a nut freedom to move some 10 mm in axial direction can be set up very quickly. But risk of wearing out the ballscrew nut from outside is not something nice to have... Can anyone share some nice and simple floating head design? 2012/11/10 Jim Coleman <drunkenwhip...@gmail.com>: > I know that the big commercial machine I interacted with at my previous job > would run over diamond plate and run it's head up and down to maintain the > distance from the surface without actually touching the surface. I'm > guessing it had to do with it's current/voltage sensing feedback. I did > not follow the THC module that the guys here were working on years ago, I'd > bet those threads have alot of info regarding the subject, how it works and > how to implement it. I would think that just riding the surface on a > floating head would be rather stressful to the mechanisms involved. Then > again I doubt you'll want your machine to be running every possible second > it can, 10 hours a day 5 days a week. It is just for probing move to find material surface, then retract and start piercing. I intend to use plasma tip voltage feedback for maintaining the torch height during cutting process. I guess that some kind of capacitance sensor might be used for this probing purpose, but I have dealt with them only once and actually do not know, where to get one for a reasonable price. -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_nov _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
