How fast do you turn the cam while grinding? Les
On 29/05/2013 13:23, Leonardo Marsaglia wrote: > I do make camshafts for living, and I'm controlling a cam grinder with > LinuxCNC but only for positioning, since the grinder uses a master to make > the lobes. I'm always thinking about using cnc to make the profiles and > don't use the masters anymore. Because the lack of time, I couldn't even > start with the tests for this but it's a feature I would really like to > implement!. > > The first thing anyway will be the roughing of the cams using a mill, I > have two old hydraulic copy lathes that are going to be used for this. If > that works, it's the first step. I'm delaying this because I'm making > several other projects now. > > Anyway I did read Andy's program and given my poor knowledge I didn't > understand too much, anyway it's a matter of learning, but I think that for > the roughing process with a mill there is no need to use acceleration PID, > I think that using only position PID it would be ok. > > For the griding process it's another deal since there is no room for the > error and the axis of the grinding wheel has to follow exactly the rotary > axis, and obviously have the radius compensation. I think that's the > trickiest part in case of doing it using acceleration instead of position. > > A really interesting proyect indeed. > ------------------------------------------------------------------------------ Introducing AppDynamics Lite, a free troubleshooting tool for Java/.NET Get 100% visibility into your production application - at no cost. Code-level diagnostics for performance bottlenecks with <2% overhead Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap1 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
