Re: [Emc-users] Oversized balls
On Sun, 17 Feb 2013 20:23:40 -0600, you wrote: If the rebuilder uses two different sizes then the smaller ones alternate with the larger, that way the smaller counter rotate to keep down friction. The load capacity decreases. Any other ratio defeats the purpose. Your right - I asked today and it seems they replace most balls with oversize and use smaller balls evenly placed to take up the gap. They said if the fingers that pick up the balls are broken, the nut is scrapped. They replace the tubes too. The screw is usually harder than the balls and often doesn't wear, if so it's just polished and cleaned. Steve Blackmore -- -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Spindle rpm display
From: tomaz_...@hotmail.com To: emc-users@lists.sourceforge.net Date: Mon, 18 Feb 2013 22:15:18 + Subject: Re: [Emc-users] Spindle rpm display So something like this could work?: # load a near component and attach it to a thread loadrt near addf near.0 servo-thread # connect one input to the commanded spindle speed net spindle-cmd = near.0.in1 # connect one input to the encoder-measured spindle speed net stepgen.2.velocity-fb = near.0.in2 # connect the output to the spindle-at-speed input net spindle-at-speed motion.spindle-at-speed = near.0.out # set the spindle speed inputs to agree if within 1% setp near.0.scale 1.01 That's the idea. Don't forget the addf command for the near component and check that the cmd speed and feedback speed are the same units. I can't remember if the near expects absolute values or not ... I would bet 1% is too tight a tolerance without filtering . Sorry it's been awhile since I looked at this in detail so forget the details... Chris M -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Spindle rpm display
there is one thing I noticed with probing velocity-fb from stepgen... When it starts counting, it counts up as long as spindle runs, so it doesn't reach certain number and stops counting up... and it also cunts up again after spindle pause or stop. Maybe I should try with spindle-ramp.maxv anyway... That's the idea. Don't forget the addf command for the near component and check that the cmd speed and feedback speed are the same units. I can't remember if the near expects absolute values or not ... I would bet 1% is too tight a tolerance without filtering . Sorry it's been awhile since I looked at this in detail so forget the details... Chris M -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Trim Posts
On 18.02.13 12:13, John Kasunich wrote: On Mon, Feb 18, 2013, at 10:06 AM, John Thornton wrote: Another thing I dislike about the mailing list is all the ads that get tacked onto each message like this: If you are trimming your posts, you are also trimming the ads. It took me about three seconds to click my mouse near the top of this message (after the part I wanted to keep), drag it to the bottom, and hit the delete key. There's much to recommend that, but when the poster isn't up to it, there are always tools. We're tool users, after all¹. If we don't want to set up a tool like t-prot to automatically trim advertising footers on this list, because the ads fund our free list, then there are additional conveniences, beyond cropping long quotes. For the case of long quotes with interspersed replies, we can within mutt: 1) Display quoted text in a different colour, which helps a bit. (I expect GUI MUAs can do that too.) 2) Zap straight to the next chunk of reply, skipping the quoted gumpf. (Just hit S, and (pages of) untrimmed quotes are instantly scrolled out of sight.) With enough verbiage-mulching gear, it's quite possible to maintain equanimity in the face of deteriorating netiquette, and even fake tolerance of it. Apropos ads, I visited Avrfreaks once. Talk about ads - those flashy jiggling and bopping things which appear on fora are so egregious that the only way I ever find myself on one now is as the result of a google hit. And a requirement to log in is anathema. Erik ¹ And the discipline of quote trimming wasn't taught in school. ;-) -- One man's constant is another man's variable. - A.J. Perlis -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Endmills for aluminium
Veisturs, You will find a number of decent traders at both German and UK eBay. I buy many tools in Germany, always fast delivery and much better prices than the local dealers. Regards, Sven -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Winner of quote-of-the-day, was Re: Trim Posts
On 2/19/2013 5:48 AM, Erik Christiansen wrote: it's quite possible to maintain equanimity in the face of deteriorating netiquette, and even fake tolerance of it. I love it! Thanks for putting a smile on my face. Regards, Kent -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Trim Posts
On 2/18/2013 10:05 AM, John Thornton wrote: No, the forum is like the IRC and a separate communications medium that many prefer. John: All my email---and we're talking three different accounts---passes into my client, which functions as a virtual one-stop-shop. As it is, I barely have time to look at my unread messages let alone go to the forum site to look for new topics/messages or attempt to stick my teacup into the firehose stream that is the IRC. In your opinion, do the forum and the email list(s) tend to cover the same issues or are there topics discussed on one that aren't on the other? Perhaps more to the point, on the basis of information rather than preference, should one be reading the forum regularly even if not actively using it? Regards, Kent -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Trim Posts
Kent, The forum seems to stay more focused on the question at hand and does not drift off topic much and almost zero idle chit chat. It's a different medium, and as for topics covered like the mailing list and the IRC they are wide and varied. Are they the same topics as the mailing list? Vary rarely will a topic be broadcast over all three communication avenues. If there is a topic your interested in on the forum it is pretty easy to lurk and just read the ones interesting to you. The forum doesn't have near the traffic or static that the mailing list has so it only takes me a few minutes a day to at least scan every post. If you have never been to the forum it is broken down into sections and subsections by topic. For example there is a Hardware section that contains Computer, Driver Boards, and CNC Machines and like wise for other sections. The forum is active enough that since it has been turned on there have been 29,984 messages in 3150 subjects. The most poplar is General LiniuxCNC Questions with 622 topics and next is Advanced Configuration with 299 topics. FAQ's are stickey to the top of a section so you don't have to wade through all the topics looking for common answers. If I had to guess I'd say there is 20 times more traffic here than on the forum but so much is not on topic it is hard to stay focused. Then you have abby normal people like me that prefer top posting because I like to see the reply first and not wade down through a long email with a bunch of signatures and ads to find the reply(s). But that is just my personal preference. For me the forum is much better organized from a subject point of view with 22 sections related to LinuxCNC not counting the International Users sections and forum sections. As for the question should someone read the forum, only they can answer that. John On 2/19/2013 11:12 AM, Kent A. Reed wrote: On 2/18/2013 10:05 AM, John Thornton wrote: No, the forum is like the IRC and a separate communications medium that many prefer. John: All my email---and we're talking three different accounts---passes into my client, which functions as a virtual one-stop-shop. As it is, I barely have time to look at my unread messages let alone go to the forum site to look for new topics/messages or attempt to stick my teacup into the firehose stream that is the IRC. In your opinion, do the forum and the email list(s) tend to cover the same issues or are there topics discussed on one that aren't on the other? Perhaps more to the point, on the basis of information rather than preference, should one be reading the forum regularly even if not actively using it? Regards, Kent -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] Plasma table
Hello! Since I posted lots of questions on this list about the plasma table I was building, I thought that I should share something: http://www.youtube.com/watch?v=OK0hldTjnX0 I took that video with my phone. I was not able to get the servos work correctly, so I ended up with stepper motors, which included also new gearboxes with smaller reduction ratio. I wrote a custom kinematics module for that machine for better THC process - thc offset is added there so that LinuxCNC and user always know the actual joint position. That means that machine soft limits are never exceeded. The thing yet to be solved is the fact that calling MDI commands with gladevcp buttons switch LinuxCNC to joint mode. There are simply gladevcp buttons, linked to halui.mdi-command-nn pins and in INI file I have defined some actions, like G53 G00 X5 Y5 Z100 or G0 X0 Y0. If I use any of these buttons, LinuxCNC will switch to joint mode, once that is completed. Can anyone explain, why is it so and what can I do about it? -- Viesturs If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Trim Posts
On 2/19/2013 1:31 PM, John Thornton wrote: The forum is active enough that since it has been turned on there have been 29,984 messages in 3150 subjects. Wow. That's a huge increase over what I saw the last time I looked, which I admit was donkeys' years ago. Guess I should sweep through it from time to time. (So much to read; so little time!) Thanks for your thoughtful reply. Regards, Kent -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] Plasma table
Viesturs; On 2013-02-19, at 2:35 PM, Viesturs Lācis wrote: Since I posted lots of questions on this list about the plasma table I was building, I thought that I should share something: http://www.youtube.com/watch?v=OK0hldTjnX0 Interesting! Thanks for posting the video. (have no experience with the MDI command/joint mode switching question - sorry) JohnS -- Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
