No need to explain in detail. Just the general areas would be fine. On Fri, Nov 22, 2019, 4:01 PM Herzog Raoul <[email protected]> wrote:
> dear Andrew, > > thanks for your positive feedback. > > There were many reasons for us to develop OpenCN : > > 1) of course scientific curiosity ... I'm working for ~8 years in this > field > > 2) but, more important, I had and have customers having problems with > surface quality as feedrate increases. > I'm living in the "watchmaking" western part of Switzerland :-) > We found out that the cause of the bad surface quality problem stems from > the vibrational behaviour of the machine. > And we started to develop special trajectory planning algorithms coded in > Matlab for *precalculating* the setpoint values. > It turned out, that the machining time with our algorithms was ~5 times > lower compared to a high end CNC, while keeping the same surface quality. > But then ... very difficult to get a commercial CNC manufacturer > interested in ... an industrialization seemed difficult. > We decided to make the important step from "offline precalculation" of > setpoint values to online calculation as any CNC does. > LinuxCNC and the IgH EtherCat Master were our starting points, but we > realized that LinuxCNC today is more a "hobbyist" solution, far from the > performance commercial CNC's can deliver today. > And for academic people, LinuxCNC, as it is today, is a code labyrinth, > especially in the trajectory planning part. > This motivated our development. > > 3) yes, we have immediate use : we are doing many machining tests on our > micro milling machine "m3" you can see in the video. > And next year we will have the "micro5" here ( > https://www.youtube.com/watch?v=hITTmdsiihY), and we'll move OpenCN to 5 > axis ! > > best regards, > > Raoul > > > -----Message d'origine----- > De : Andrew <[email protected]> > Envoyé : vendredi 22 novembre 2019 22:15 > À : EMC developers <[email protected]> > Objet : Re: [Emc-developers] announcement OpenCN, a new fork of LinuxCNC > > Dear Raoul, > > I truly admire your and your team's efforts. > Let me ask you about the purpose of OpenCN. Why did you decide to create > it? > Was it mostly for science or you have immediate use for it? > > Sincerely, > Andrew > > > пт, 22 лист. 2019 о 09:48 Herzog Raoul <[email protected]> пише: > > > dear Linux developers, > > > > I'm pleased to announce a new fork of LinuxCNC, called "OpenCN* : > > > > OpenCN is an open source numerical control (CNC) for high end > > machining applications (high dynamics, high precision). > > > > OpenCN is originally based on LinuxCNC, but with strong enhancements : > > > > -) completely reworked trajectory planning (TP) including jerk control > > based on embedded optimization > > -) Xenomai asymmetric multiprocessing (AMP) for hard real time, low > > latency > > -) up to date Linux kernel > > -) EtherCat with 10 kHz frame rate and distributed clock (DC), mode B > > -) new Qt based GUI superseding "axis" > > > > The HW platforms are x86 (available) and ARM (in preparation). > > > > Software : gitlab.com/mecatronyx/opencnc/opencn< > > https://gitlab.com/mecatronyx/opencnc/opencn> > > Doc : mecatronyx.gitlab.io/opencnc/doc/< > > https://mecatronyx.gitlab.io/opencnc/doc/> > > Youtube : www.youtube.com/channel/UC8FQCu_fKYfK7QRDN0j_dBw< > > https://www.youtube.com/channel/UC8FQCu_fKYfK7QRDN0j_dBw> > > > > > > best regards, > > > > Raoul > > > > > > > > [http://correspondance.heig-vd.ch/assets/heig.png] > > > > Raoul Herzog > > Dr. > > > > Professeur > > Institut d'Automatisation Industrielle (iAi) Groupe mecatronYx Prof. : > > > > +41 24 557 61 93 > > > > Site web : > > > > http://www.iai.heig-vd.ch > > > > > > [email protected]<mailto:[email protected]> > > > > > > > > > > _______________________________________________ > > Emc-developers mailing list > > [email protected] > > https://lists.sourceforge.net/lists/listinfo/emc-developers > > > > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers > > _______________________________________________ > Emc-developers mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-developers > _______________________________________________ Emc-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
