Re: [Emc-users] Has anyone tried to use and RC controller with EMC to run a RC brushless
Has anyone tried to use and RC controller with EMC to run a RC brushless motor Hi! I try to use it. Work still in progress, but control part is almost done. please read more here http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,16/id,2056/limit,6/limitstart,12/lang,english/#14554 On 11/08/2011 06:15 AM, Kasey Matejcek wrote: Has anyone tried to use and RC controller with EMC to run a RC brushless motor They take a pwm control signal from 1ms to 2ms or around there but haven't tried It sound like the have to have a signal on the input when there powered up or the go into disable mode possibly On 7 November 2011 02:26, Kirk Wallacekwall...@wallacecompany.com wrote: I suppose a draw bar is going to be a problem. How does your current drawbar work? I can imagine thet it might be possible to use the exisiting drawbar actuator for the new spindle. Part of the solution might be to hold the high-speed spindle in place with the 4 tapped holes in the face rather than with the drawbar. I have an electric draw bar like this one: http://home.insightbb.com/~joevicar3/cheap_drawbar.htm It's not very subtle and would make short work of a 20 taper collet. There are laminations available with a decent-sized central hole that would allow a through-bore motor to be made. http://www.gobrushless.com/shop/index.php?app=ccp0ns=prodshowref=SC+ 65mmstator I think an ISO10 holder could be made to fit at least partly up inside that, and you could probably still get at the face mounting bolts. However I have not found a drawing which shows them. http://www.schaublin.ch/catalogues/PO039-042.pdf Usually outrunners are wound to get low RPM. I would most likely need as much speed as possible. Many of the laminations I have seen have odd numbers of poles so would not work. I do see the above stator has a number of poles that evenly divides by three, so would work if I wind six poles in a row. So let's see, 60 RPS = 3600 RPM. Common VFD's go up to 400 Hz to give around 24,000 RPM. That would do nicely. This would be a slam dunk if I didn't want the draw bar and went with ER collets, hmmm. An Inrunner might package more easily. Rather than a brushless motor, I wonder if gearing up the existing spindle is an option. I have seen a centrifugal supercharger drive which used friction drive to achieve a large speed increase using only a slightly resilient outer drive ring, and slightly-floating-mounted planets. These are almost ready-made for the planet job: http://simplybearings.co.uk/shop/advanced_search_result.php?categories _id=44611_10=9205_121_210=-122_220=9205_2223_230=9205_23x=22y=9 extra_field_filter=1 I found this: http://www.tormach.com/product_pcnc_acc_speeder.html I suppose a smooth belt from the main spindle to an offset idler axle then a belt back to an on-axis secondary spindle would work, but then there would be no fancy high-tech electronics involved. -- Kirk Wallace http://www.wallacecompany.com/machine_shop/ http://www.wallacecompany.com/E45/index.html California, USA -- RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] emcrsh: server part locks up
Hi friends! Thank you for answers. Please let me continue discussion on EMC web forum, where my initial post was. I answer on web forum, not here in mailing list, for not to make fork in discussion. http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/id,13940/catid,38/limit,6/limitstart,0/lang,english/ Thanks! :-) O Hi! I found some troubles using Emcrsh program. The detailed description is here http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/cati d,38/id,13940/lang,english/ In addition, my Emc software version was initially not latest 2.4.6, but version packed into liveCD image. I then update it to 2.4.6 but no difference. I can't test version 2.4.7, because mentioned in announce 'Debian packages are availble from the regular package servers' i can't find anywhere. When i build from source, i see Emcrch binary, but don't see Emc main executable (probably due to i don't have real-time developement libs). I try to substitute Emcrsh 2.4.7 binary into existing Emc2 2.4.6 instalation, but still no success. I also notice that increase Base_period from 10 to 50 mostly solves this problem (but not completely solves), but software stepgens not work anymore with it. I disable all i found relevant to problem in my BIOS setup (USB, sound, CPU features, etc.) but no difference. Jitter is: 3100 ns when idle, and up to 6700 ns when i abuse computer (glxgears etc). (these values taken after i moderately modify BIOS settings). No jitter peaks i notice. I have Intel Celeron E14 06FD 2.0GHz CPU and Gigabyte GA-G31M-ES2L motherboard. Onboard videocard used. I use cheap parallel port step drivers. I have 4 axis. My initial setup was standard liveCD EMC2 which work out-of-box, and i am able to mill without any problem, when not use Emcrsh. I am very novice in EMC, RTAI and machining at all. Thank you very much! -- The demand for IT networking professionals continues to grow, and the demand for specialized networking skills is growing even more rapidly. Take a complimentary Learning@Cisco Self-Assessment and learn about Cisco certifications, training, and career opportunities. http://p.sf.net/sfu/cisco-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] emcrsh: server part locks up
Hi! I found some troubles using Emcrsh program. The detailed description is here http://www.linuxcnc.org/component/option,com_kunena/Itemid,20/func,view/catid,38/id,13940/lang,english/ In addition, my Emc software version was initially not latest 2.4.6, but version packed into liveCD image. I then update it to 2.4.6 but no difference. I can't test version 2.4.7, because mentioned in announce 'Debian packages are availble from the regular package servers' i can't find anywhere. When i build from source, i see Emcrch binary, but don't see Emc main executable (probably due to i don't have real-time developement libs). I try to substitute Emcrsh 2.4.7 binary into existing Emc2 2.4.6 instalation, but still no success. I also notice that increase Base_period from 10 to 50 mostly solves this problem (but not completely solves), but software stepgens not work anymore with it. I disable all i found relevant to problem in my BIOS setup (USB, sound, CPU features, etc.) but no difference. Jitter is: 3100 ns when idle, and up to 6700 ns when i abuse computer (glxgears etc). (these values taken after i moderately modify BIOS settings). No jitter peaks i notice. I have Intel Celeron E14 06FD 2.0GHz CPU and Gigabyte GA-G31M-ES2L motherboard. Onboard videocard used. I use cheap parallel port step drivers. I have 4 axis. My initial setup was standard liveCD EMC2 which work out-of-box, and i am able to mill without any problem, when not use Emcrsh. I am very novice in EMC, RTAI and machining at all. Thank you very much! -- The demand for IT networking professionals continues to grow, and the demand for specialized networking skills is growing even more rapidly. Take a complimentary Learning@Cisco Self-Assessment and learn about Cisco certifications, training, and career opportunities. http://p.sf.net/sfu/cisco-dev2dev ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
