Hi >> > in [TRAJ] I have >> > DEFAULT_VELOCITY = 1.0 >> > MAX_VELOCITY = 8 >> > DEFAULT_ACCELERATION = 55.0 >> > MAX_ACCELERATION = 55.0 >> > >> > In each axes.. for example >> > [AXIS_0] I have >> > MAX_VELOCITY = 8.5 >> > MAX_ACCELERATION = 60 >> > STEPGEN_MAXACCEL = 65 > > That looks pretty good, but those acceleration rates seem pretty brutal. > Have to agree with Gene re the acceleration figures
In my wholly limited experience, it is the acceleration setting more than the velocity, which tends to cause lost steps in rapids. Prime danger time is the end of a cut with a sudden direction change and a short G0 rapid back to the start point again. On my lathe I was able to increase my MAX_VELOCITY having considerably reduced the existing MAX_ACCELERATION and have a nice soft start and finish to rapid moves. I use metric units, which makes direct comparison difficult, but on a ratio of accel to velocity basis, your acceleration figures are 10 -12 times higher than mine. regards ------------------------------------------------------------------------------ uberSVN's rich system and user administration capabilities and model configuration take the hassle out of deploying and managing Subversion and the tools developers use with it. Learn more about uberSVN and get a free download at: http://p.sf.net/sfu/wandisco-dev2dev _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
