> > Currently - there is no way to adjust it. I do run the acceleration and > velocity as high as I can. (on the emco it is in above 50in/s^2) I do > have some math that calculates the following error of the shape (actual > shape vs axis position) and decide how fast to run the spindle to get the > tolerance I want. There should be some sort of trajectory planning - but > that might be above my pay grade > > (mostly academic for me - just wanted to see how well it works...) >
Thanks for the feedback Sam. I'll have to dig in a little more to improve what I've done surely, but I guess only for the jobs I need to do from time to time the live tool is justified. I usually do 6 mm lift cams but sometimes I need to reach 9, 10 and even 11 mm of lift wich are almost dynamically impossible to turn with conventional tooling. El dom., 12 jul. 2020 a las 15:52, Sam Sokolik (<[email protected]>) escribió: > Currently - there is no way to adjust it. I do run the acceleration and > velocity as high as I can. (on the emco it is in above 50in/s^2) I do > have some math that calculates the following error of the shape (actual > shape vs axis position) and decide how fast to run the spindle to get the > tolerance I want. There should be some sort of trajectory planning - but > that might be above my pay grade > > (mostly academic for me - just wanted to see how well it works...) > > sam > > On Sun, Jul 12, 2020 at 1:32 PM Leonardo Marsaglia <[email protected]> > wrote: > > > Excellent job Sam. > > > > One question to the list in general. How are you managing the > > atenuation and phase displacement you get when you increase spindle rpm > > using eoffsets? Other than increasing the speed and accel of the axis I > > mean. > > > > I could cut cams with some success but I really can't follow the shape > and > > the phase with the same success and that's why I'm building a live > tooling > > jig to cut at really low spindle RPM to avoid this effect as much as > > possible. My particular problem is worse because all the machining of the > > cams has to be aligned with a keyway in the camshafts. > > > > El dom., 12 jul. 2020 a las 5:12, John Dammeyer (<[email protected] > >) > > escribió: > > > > > So question. > > > 1. would you post the G-Code that made that? > > > 2. I take it virtually 0 backlash on the cross slide? > > > 3. I was also impressed with how well the parting off went. Mine tends > > to > > > dig in. > > > John > > > > > > > > > > -----Original Message----- > > > > From: Sam Sokolik [mailto:[email protected]] > > > > Sent: July-11-20 7:39 PM > > > > To: Enhanced Machine Controller (EMC) > > > > Subject: [Emc-users] Because the hardware store was 4 miles away... > > > > > > > > Right? Am I right? > > > > > > > > https://youtu.be/wv7mMS5xKks > > > > > > > > _______________________________________________ > > > > Emc-users mailing list > > > > [email protected] > > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > > > > > > _______________________________________________ > > > Emc-users mailing list > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > > > > _______________________________________________ > > Emc-users mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
