I like it when pros weigh in. The machine I used (it was in a production environment) didn't have any floating mechanism that I could see, but then again I wasn't at all impressed by that machine. It's homing sequence would get you within a repeatability of 2 inches or so in both X and Y, resuming a stopped cut was a headache of rehoming over and over till it chose the right spot. I do wish I had experience with a machine of higher quality, I'd probably think better of plasma tables. I developed a disdain for it, having to bend the parts and keep holes located consistently relative to a bends, and keep overall part widths consistent while bending with opposite sides of the burnt parts against the press' stops.
Jim On Mon, Nov 12, 2012 at 12:06 PM, Marius Liebenberg <[email protected]>wrote: > I concur with Andy. Some of us use plasma cutter on a daily basis in > production and some of us (Me) do consultation to sort out machine > problems on a daily basis. From experience and seeing many good and many > bad machines, the best production solution is a floating head that will > detach when run into a job. > I have seen many alternative solutions that all end up being scraped and > redone to floating head. > It is my opinion that the only good and maybe better alternative is the > capacitive sensing THC system. The simpler the solution the lesser the > troubles:) > > > On 2012/11/12 06:08 PM, andy pugh wrote: > > On 12 November 2012 16:00, Jim Coleman <[email protected]> wrote: > >> Is the reason behind the floating head so there won't be damage if the > head > >> hits an object while cutting, like a warped part sticking up? I'm > having > >> trouble grasping why it's needed. > > While cutting you can measure the head-to-work distance using the arc > voltage. > > However, to start cutting you need to have the head at the correct > > height then strike the arc. > > > > The idea is to use the head as a probe, lower to find the work, raise > > to the correct height, strike the arc then continue to cut while > > adjusting height based on arc voltage. > ------------------------------------------------------------------------------ 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 [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
