Nicklaus hello even tho the average velocity is low it is important to move to the correct position as soon as possible if the tool is too close it will cause thousands of bad discharges per second and damage the stock ( velocity is NOT important, position IS important) if the tool is too far away then many pulses will not occur wasting time in a process that is already slow too close is -1 or 2 microns too far is + 1 or 2 microns more positional error is just bad control
MRR is metal removal rate measured in grains per minute or grains per hour the finer the finish the slower the MRR MRR is higher with rougher surface, lower with finer Vw is VerschleissWerkstuffe or loss of workpeice Ve is VerschleissElekgtrode or loss of tool Vw is high for roughing (schruppen) and Ve is low for roughing Ve is high for finishing ( schlicten) and Vw is low for finishing there is a point where it is advantageous to reverse the polarity to get better Vw an Ve This point is related mostly to on time and D%, not current ( tho this point is usually at low currents) back to your post... yes the velocity is slow no the position update should not be slow run the position update as fast as you can even use hardware to update the motor amplifier and only let Linuxcnc monitor postion just to make the position loop as fast as possible tomp On 03/02/2016 06:12 PM, Nicklas Karlsson wrote: >> ... >> All of this start, stop, backup motion will result in an average rate of >> travel that is on the order of inches per hour. It's not fast. Though the >> positioning rate for forward and reverse motion can be inches per minute. >> ... > Then it is so slow as at maximum inches per minute there is no point with > position/velocity loop faster than once each millisecond? > > For Z-axis there would be no problem with 40kHz servo loop if needed. > > Regards Nicklas Karlsson > > ------------------------------------------------------------------------------ > Site24x7 APM Insight: Get Deep Visibility into Application Performance > APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month > Monitor end-to-end web transactions and take corrective actions now > Troubleshoot faster and improve end-user experience. Signup Now! > http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
