Back
[00:00:00] <iwoj> stepper motors are pretty awesome… but back to the udev stuff.
[00:00:19] <pfred1> forget udev it worked exactly as it should have
[00:00:29] <iwoj> ?
[00:00:32] <pfred1> soon as you called the module it loaded the device
[00:00:56] <iwoj> the smi modules doesn't load though.
[00:01:09] <pfred1> well I think emc2 has a script that does the monkey business for you
[00:01:37] <Gensor> pfred1, do you have a bill of materials and drawings?
[00:01:39] <pfred1> the . emc-environment command
[00:02:04] <iwoj> pfred1: thanks. I was about to google "emc2 monkey business" ...
[00:02:07] <pfred1> Gensor there is this
http://www.instructables.com/id/TB6560-Microstepping-Bipolar-Chopper-Stepper-Motor/
[00:02:27] <pfred1> Gensor and this
http://www.instructables.com/id/300-Watt-Linear-Power-Supply/
[00:02:41] <pfred1> and this
http://www.instructables.com/id/Parallel-Port-Break-Out-Board-BOB/
[00:03:14] <pfred1> oh and this helped some too
http://www.instructables.com/id/Make-an-Acme-Tap/
[00:03:51] <pfred1> Gensor of course LinuxCNC being FOSS didn't strain my budget either :)
[00:06:09] <pfred1> iwoj machine specific configuration can be a bit of a chore but once you're done you're done
[00:06:43] <iwoj> i can hope.
[00:07:22] <iwoj> just downloading the latest emc2-dev from git for the environment script...
[00:07:52] <pfred1> iwoj this is what i did to configure mine
http://pastebin.com/cYYqyKPX
[00:07:55] <iwoj> I think I'm going to have to throw a party once this thing is set-up.
[00:08:11] <pfred1> iwoj I didn't like the CD image
[00:08:33] <iwoj> pfred1, that's a golden link. Thanks man.
[00:08:45] <pfred1> you don't need to do any of that
[00:08:45] <Gensor> interesting
[00:08:51] <bossseries1> Anyone know if I only have to hookup RXD1 and TXD1 if I'm using a single smart serial device with hostmot2? I'm going 7i43 -> 7i47 -> 7i64
[00:08:52] <pfred1> the CD image does it all for you
[00:09:24] <pfred1> that is why they put it out so no one has to do all of that
[00:10:19] <bossseries1> Definitly use the CD image... It saves days, and just works.
[00:10:56] <iwoj> it's not working for me.
[00:11:17] <pfred1> it will you just have to configure it
[00:13:45] <Tecan> opencam looks sweet
[00:14:19] <iwoj> well that's just it. i'm still stuck trying to disable SMI.
[00:14:37] <iwoj> i have a feeling that once that's done, i'll have fixed the latency problems.
[00:14:46] <pfred1> Tecan I'm not waiting I'm downloading now!
[00:15:11] <Tecan> hmmm
[00:15:25] <Tecan> i tried compiling it in gambas 2 but there are some issues
[00:15:31] <pfred1> wholly snokes it is still pretty young isn't it?
[00:15:43] <Tecan> its kinda old
[00:15:50] <pfred1> ah abandonware?
[00:16:13] <Tecan> i think its included in linuxemc might be wrong tho
[00:16:21] <pfred1> yeah 2006 date I see
[00:16:28] <Tecan> http://www.securetech-ns.ca/camm-linux.html < this looks kinda neat too
[00:16:49] <pfred1> it may have been included if someone finished it
[00:17:26] <Tecan> it compiles but its complaining about strings just gotta learn how to make the strings compile
[00:17:37] <Tecan> works with gambas 1
[00:18:20] <pfred1> cam is the weak link with Linux
[00:18:52] <pfred1> most use what solidworks?
[00:19:13] <Tecan> your thinking cad
[00:19:36] <pfred1> well cad isn't linux's strong suit either
[00:21:37] <Tecan> theres no time like real time
[00:23:27] <iwoj> pfred1: I can't find this emc-environment script you mentioned....
[00:23:40] <Tecan> wine runs autocad fine
[00:24:04] <Tecan> blender exports vector graphics
[00:24:30] <Tecan> not quite cad but it does the trick in a pinch
[00:25:51] <pfred1> iwoj now it may be called rip-environment
[00:26:32] <pfred1> my EMC is kind of old
[00:26:47] <pfred1> they're trying to get away from the EMC name
[00:27:35] <iwoj> thanks
[00:27:36] <pfred1> they've a bit of work ahead of them I regressively grepped the source tree and found over 55,000 occurrances of it in there
[00:28:54] <iwoj> nasty
[00:29:08] <pfred1> yeah their fingers are going to be pretty tired
[00:29:42] <iwoj> just recursively search and replace and re-run the tests.
[00:30:13] <iwoj> i'm sure that'll work just fine
[00:31:24] <pfred1> or just tell EMC it is all fixed now go away
[00:34:33] <iwoj> … oh i guess the only problem with running rip-environment is that I don't have a run in place system. it's installed on a partition.
[00:34:52] <pfred1> that isn't what run in place means
[00:35:08] <pfred1> run in place is a configuration option wiht building it locally
[00:35:41] <pfred1> this is an arcane fact known only to folks who've built it locally :)
[00:36:33] <iwoj> phew. man. i'm learning too much.
[00:36:46] <iwoj> so i've found the rip-environment.in script
[00:36:52] <pfred1> yeah I'm not sure how it impacts a CD image install user
[00:37:15] <pfred1> there should be shortcuts on your desktop
[00:37:20] <iwoj> do i need to move it somewhere, or can I just run the sucker from the emc2 sources
[00:38:14] <iwoj> this script dies with "This script is only useful on run-in-place systems."
[00:38:33] <iwoj> round and round we go.
[00:38:43] <pfred1> if you build the emc2 sources you can configure it to run in place but you shouldn't have need to do any of that the cd install has done everything for you
[00:39:12] <pfred1> and your desktop shortcuts should setup your environment as you need it
[00:40:15] <iwoj> pfred1: yes, i've done all that. the problem is that my system's latency is too high to run the configured environment. i need to disable SMI.
[00:40:24] <pfred1> right
[00:40:48] <pfred1> there is risk but other than it works here I don't know what else to tell you
[00:41:03] <iwoj> i've followed the instructions for modifying rtai.conf with the smi module, but it doesn't want to load.
[00:41:31] <pfred1> you tried to load it after you enabled the environment?
[00:41:47] <pfred1> like start up the latency test then load it
[00:41:48] <iwoj> load it after?
[00:41:57] <iwoj> interesting. how?
[00:41:57] <pfred1> sure why not?
[00:42:18] <pfred1> lots of modules depend on other modules being loaded ahead of time
[00:42:59] <pfred1> what is the worst thing that can happen it already doesn't work
[00:43:33] <iwoj> how do i load the module?
[00:43:42] <pfred1> modprobe modulename
[00:43:53] <pfred1> well sudo modprobe modulename
[00:45:11] <iwoj> cnc@krakow:~$ sudo modprobe /usr/realtime-2.6.32-122-rtai/modules/rtai_smi.ko
[00:45:12] <iwoj> WARNING: All config files need .conf: /etc/modprobe.d/blacklist, it will be ignored in a future release.
[00:45:12] <iwoj> FATAL: Module /usr/realtime_2.6.32_122_rtai/modules/rtai_smi.ko not found.
[00:45:18] <pfred1> no
[00:45:30] <pfred1> sudo modprobe rtai_smi
[00:46:11] <iwoj> FATAL: Module rtai_smi not found.
[00:46:47] <iwoj> is this where I need to do something wwith udev?
[00:47:15] <pfred1> no that is telling you it cannot find the binary file
[00:47:46] <pfred1> then again it isn't in /usr/lib/modules now is it
[00:48:09] <pfred1> hmmm I'm going to have to look at the instructions
[00:48:33] <iwoj> the binary file is right at /usr/realtime-2.6.32-122-rtai/modules/rtai_smi.ko
[00:49:12] <iwoj> I'm working from this webpage:
http://wiki.linuxcnc.org/cgi-bin/wiki.pl?FixingSMIIssues
[00:50:04] <pfred1> so you edited rtapi.conf like it told you to?
[00:51:24] <iwoj> yup
[00:51:49] <pfred1> lsmod | grep rtai_smi
[00:52:50] <pfred1> seems there is a bit of an issue which conf file is actually active
[00:53:20] <iwoj> cnc@krakow:~$ lsmod | grep rtai
[00:53:20] <iwoj> rtai_math 21406 0
[00:53:20] <iwoj> rtai_sem 21551 1 rtapi
[00:53:20] <iwoj> rtai_fifos 20988 1 rtapi
[00:53:20] <iwoj> rtai_sched 156719 3 rtapi,rtai_sem,rtai_fifos
[00:53:20] <iwoj> rtai_hal 186236 4 rtapi,rtai_sem,rtai_fifos,rtai_sched
[00:53:35] <iwoj> it's definitely going to the right conf file
[00:53:43] <pfred1> how do you know?
[00:53:52] <iwoj> when I add the SMI lines, it doesn't start.
[00:53:55] <pfred1> you changed the conf file's name and emc wouldn't start?
[00:54:46] <pfred1> well I'd think now you're going to have to hand unload all of the modules in order to find out
[00:54:59] <iwoj> I added the SMI lines to the conf file and the latency test and EMC apps die with an error message:
[00:55:00] <iwoj> insmod: error inserting '/usr/realtime-2.6.32-122-rtai/modules/rtai_smi.ko': -1 No such device
[00:55:12] <iwoj> why?
[00:55:35] <iwoj> I've added the SMI module last in the list of modules
[00:55:48] <iwoj> and it's the only module that's causing problems.
[00:55:51] <pfred1> on he page it is first
[00:56:10] <pfred1> well in the MODPATH
[00:56:13] <iwoj> MODULES="adeos rtai_hal rtai_ksched rtai_fifos rtai_shm rtai_sem rtai_math rtai_smi"
[00:56:18] <iwoj> it's last.
[00:56:31] <pfred1> did you add the MODPATH line?
[00:56:36] <iwoj> yup.
[00:56:49] <iwoj> hang on, let' me pastebin my conf file
[00:57:00] <pfred1> then the file you edited can't be the right one
[00:57:21] <iwoj> why not?
[00:57:31] <pfred1> rename it unload all your rtai modules then try to start emc
[00:57:41] <pfred1> because if you did all you say you did it should work
[00:57:43] <iwoj> http://pastebin.com/diKpkr1G
[00:58:13] <iwoj> I agree, it should work, according to the instructions.
[00:58:18] <iwoj> what would renaming do?
[00:58:24] <pfred1> do what i just said to do rename it unload all your rtai modules then try to start emc
[00:58:30] <iwoj> I know it works without the SMI stuff.
[00:58:50] <iwoj> ok
[00:58:52] <iwoj> hang on.
[00:58:54] <pfred1> oh so you're saying since yo uedited the conf file emc won't evne start now
[00:59:13] <iwoj> yes.
[00:59:27] <pfred1> that would suggest you are editing the correct file
[00:59:30] <iwoj> adding the SMI stuff stops EMC from starting
[00:59:36] <iwoj> yup.
[00:59:59] <iwoj> the problem's not the conf file. it's something about how it's trying to load the rtai_smi.ko file.
[01:01:48] <iwoj> this is the debug output from trying to run EMC with the SMI stuff:
http://typewith.me/p/UAejYsZ5Ad
[01:05:24] <iwoj> pfred1, buddy. Still with me?
[01:05:56] <pfred1> yeah it looks like it should work
[01:07:09] <iwoj> but it isn't, man. it isn't.
[01:08:35] <pfred1> [ 1590.266090] RTAI: Intel chipset not found.
[01:08:38] <pfred1> ?
[01:09:11] <pfred1> maybe you don't have SMI?
[01:09:12] <iwoj> hmm...
[01:10:07] <pfred1> type lspci
[01:11:15] <iwoj> http://pastebin.com/X6skD5QS
[01:11:24] <iwoj> loads of intel chipsets
[01:12:54] <pfred1> this is what intel chips look like
http://pastebin.com/rB71bGQ8
[01:13:55] <pfred1> they say they're intel chips
[01:14:09] <MrSunshine> http://www.youtube.com/watch?v=JEpsKnWZrJ8
[01:15:01] <iwoj> http://pastebin.com/4qNfB94R
[01:15:09] <iwoj> Yup. Got them.
[01:15:30] <MrSunshine> not until now i realy understand why they need to shrink chips to make them go faster =)
[01:15:42] <MrSunshine> to make the distances less ofc! =)
[01:15:52] <pfred1> MrSunshine takes time for singnals to propagate
[01:16:07] <iwoj> This discussion seems to suggest that the smi module doesn't recognise newer hardware and assumes that SMI isn't available to be disabled.
[01:16:07] <iwoj> http://mail.rtai.org/pipermail/rtai/2011-September/024760.html
[01:16:41] <pfred1> some systems are just unsuitable for RT
[01:16:53] <pfred1> for whatever reasons
[01:17:24] <iwoj> argh.
[01:17:31] <pfred1> maybe somewhere there is an answer that fixes yours but you're going to have to hunt for it I'm afraid
[01:17:42] <pfred1> because you've done it right it looks like to me
[01:17:51] <pfred1> but it didn't work for you
[01:18:10] <iwoj> yeah. i'
[01:18:12] <iwoj> i'
[01:18:24] <iwoj> i'll dig through some RTAI discussions.
[01:18:34] <iwoj> thanks for your help.
[01:18:49] <pfred1> focus on your specific chips
[01:18:53] <pfred1> ICH10 Family
[01:18:56] <iwoj> good idea
[01:19:07] <pfred1> because there is something fishy going on there
[01:20:09] <pfred1> http://mail.rtai.org/pipermail/rtai/2011-September/024760.html
[01:20:25] <pfred1> exactly what happened to you
[01:22:47] <pfred1> this is the problem
http://comments.gmane.org/gmane.linux.real-time.rtai/24969
[01:23:10] <iwoj> yup
[01:23:16] <iwoj> i'm right on this.
[01:23:29] <iwoj> what's magma?
[01:23:47] <pfred1> the name of the RTAI project I believe
[01:23:57] <pfred1> see RTAI is the Rt kernel module
[01:24:16] <pfred1> it is a separate project from LinuxCNC LinuxCNC just uses it
[01:25:17] <Tecan> make -j12
[01:25:26] <iwoj> delightful. i guess I'm going to download and compile RTAI from source
[01:25:38] <pfred1> it is what I did
[01:25:59] <pfred1> hey lok on the bright side at least you've the option
[01:26:17] <pfred1> of fixing it if you really want to
[01:27:53] <pfred1> but I'm out it is late here I have to go remember Rome wasn't built in a day
[02:00:10] <DJ9DJ> moin
[05:38:31] <pingufan> Hello, I would like to add some kind of Joystick to my mill. Can I use USB Joysticks ?
[05:40:32] <jthornton> in 2.4 you can, I can't remember back as far as 2.3
[05:41:29] <pingufan> I understand that the joystick can operate x+y. But how do I operate z ?
[05:42:00] <pingufan> jthornton: I think about inserting a diferent harddisk and try the newest release.
[05:42:14] <mazafaka> you will probably need to hold some key
[05:42:40] <jthornton> there are examples on the wiki for a joypad
[05:42:44] <pingufan> on joystick or keyboard? (I have limited place at my mill)
[05:43:09] <jthornton> http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Simple_Remote_Pendant
[05:44:45] <pingufan> Ouch - I just looked at my distributor - they look like Scify thingies.
[05:45:28] <pingufan> A joypad is like the touchpad on a laptop?
[05:45:58] <jthornton> did you look at the picture in the link?
[05:49:10] <pingufan> I saw it right now. I thought that a joystick is one stick with two coordinates, possibly 1-2 buttons in addition.
[05:50:52] <pingufan> is it comfortable to work with it? (Out from practise)?
[05:51:23] <jthornton> confortable?
[05:51:54] <pingufan> comfortable
[05:52:10] <pingufan> easier than cursor buttons on keyboard
[05:52:15] <jthornton> I have one on my plasma to position the torch head
[05:52:40] <jthornton> yes it is easier than keypad buttons because I can take it with me to the location of the torch
[05:53:02] <pingufan> So you move around with the joypad in your hands. Ok.
[05:53:08] <pingufan> My mill is much smaller.
[05:55:23] <pingufan> Can I connect an additional numeric key-block to the PC and use this as cursor block replacement (use it as a set of function keys) while the normal keyboard remains unchanged in behaviour?
[05:55:38] <pingufan> Would make more sense
[06:22:31] <mazafaka> you probably do not even need it.
[06:24:35] <mazafaka> the work itself is dirty, EMC *already* offers much enough in comparison to some another CNC software, and keep safety techniques high, it's what is only needed
[08:47:28] <awallin> so everyone ordering raspberry-pi boards?
[08:48:28] <pjm> lol tried this morning at 6.01AM from rswww.com
[08:48:38] <pjm> but its 'register interest only'
[08:49:08] <awallin> is there any chance of linuxcnc on that ARM?
[08:49:16] <archivist> I was too lazy to get up early
[08:49:23] <pjm> lol
[08:49:46] <pjm> i was pretty pissed off that their 'big announcement' turned out to be 'we have resellers'
[08:50:23] <archivist> poor Farnell had a site crash :)
[08:50:34] <pjm> lol it was pretty much a ddos on rswww too
[08:50:52] <pjm> still apparently rswww get stock in on 5th march
[08:51:53] <archivist> a long queue is expected
[08:53:03] <awallin> how is this different from beagleboard
[11:28:16] <Loetmichel> re @ home
[12:19:32] <IchGuckLive> hi all on a day that happens only every 4th year
[12:19:34] <joe9> is there a lot of axial force in a drill press? there shouldn't be, I think.
[12:20:21] <IchGuckLive> it depends on your break speed
[12:20:59] <IchGuckLive> as you move 40LBS in 100inch/sec and break at 30²/s
[12:21:13] <IchGuckLive> there i alot of force in the axis
[12:21:51] <IchGuckLive> the fix points to the frame will come loose soon
[12:22:54] <IchGuckLive> joe9: is it growing real or even at development state
[12:23:27] <joe9> the mill? no, not yet. still working on the drill press.
[12:23:38] <joe9> I cannot get the drive sleeve out.
[12:23:58] <joe9> soaking it WD-40. tried tapping with a round dowel and a hammer. moved a mm.
[12:24:35] <IchGuckLive> CARAMBA availabvle
[12:24:52] <joe9> what is "CARAMBA"? let me google it.
[12:25:05] <IchGuckLive> this will give you more slitering
[12:25:38] <DJ9DJ> ei caaaaaraaaaamba :D
[12:26:09] <joe9> googling on caramba gives me all kinds of crap.
[12:26:23] <IchGuckLive> http://de.wikipedia.org/wiki/Caramba_Chemie
[12:26:38] <IchGuckLive> i dident find the equal to engl
[12:27:09] <IchGuckLive> it makes things that are 50Years oxidentet move within 10min
[12:27:59] <IchGuckLive> At the beginning the focus was on rust removers for cleaning and lubrication
[12:28:01] <joe9> is it the equivalent of "Penetrating Blaster"
[12:29:02] <IchGuckLive> it works here in germany since 1918
[12:29:33] <IchGuckLive> i think almost 90% of all household own at least one product in a time
[12:30:27] <IchGuckLive> DJ9DJ: the slogen to the product is good
[12:30:38] <DJ9DJ> :)
[12:31:39] <IchGuckLive> the mechanik pulls and pulls
[12:32:07] <IchGuckLive> the yiung lady tattos all over comes with the spray gets it on and EI carammba it goes of
[12:33:39] <IchGuckLive> DJ9DJ: google pictures from "lena van de mars"
[12:34:05] <IchGuckLive> she is the mechanics from famous rally team
[12:34:28] <DJ9DJ> jo, know her from tv
[12:34:50] <IchGuckLive> powerfull wrench lady
[12:36:18] <IchGuckLive> joe9: what size cross table
[12:36:55] <IchGuckLive> 4x4
[12:38:38] <joe9> IchGuckLive: if you were repairing a drill press and making it more accurate, would you use an "angular contact bearing" or an ABEC-3 ball bearing?
[12:39:35] <IchGuckLive> okto bearing as it is cheep in diameters below 2inch
[12:40:08] <jdhnc> I am far from an expert, but looking at the drawing, I didn't see any place that and angular contact bearing would help.
[12:40:10] <joe9> shaft diameter: 25mm, OD = 52mm, Wd = 15 mm
[12:42:06] <joe9> jdhnc: ok, thanks. I just read this: "Angular contact bearings are designed to take both axial and radial loads, unlike radial bearings which are made for radial loads only. Consider that when using a drill press to push a drill into a work piece both axial and radial forces are at work. Sort of makes you wonder what the designer was thinking, doesnât it? Take a look at a good American drill press, like a Clausing, and ...
[12:42:12] <joe9> ... youâll find an angular contact bearing at the end of the spindle." from
http://www.machinistblog.com/restoring-a-craftsman-15%E2%80%B3-drill-press/
[12:42:19] <joe9> and am wondering if I should have used them instead.
[12:45:01] <jdhnc> doesn't an angular contact bearing need a load bearing surface
[12:45:19] <jdhnc> otherwise, it is just using the radial component.
[12:45:45] <jdhnc> perhaps it just doesn't show in the drawing?
[12:46:13] <joe9> jdhnc: you know more than I do. I just read it off the internet and it kept me thinking. maybe, I am thinking too much.
[12:46:26] <jdhnc> I wouldn't count on that :)
[12:49:07] <IchGuckLive> joe9:
http://www.skf.com/skf/productcatalogue/jsp/viewers/productTableViewer.jsp?tableName=1_3_4&maincatalogue=1&lang=en
[12:49:44] <IchGuckLive> this woudt it be
http://www.skf.com/skf/productcatalogue/Forwarder?action=PPP&lang=en&imperial=false&windowName=null&perfid=129001&prodid=1290010205
[12:49:56] <mrsun_> http://i42.tinypic.com/35l6gl5.jpg yeey latest milling :P
[12:49:58] <joe9> IchGuckLive: cool, thanks.
[12:51:29] <IchGuckLive> it will cost here 15Euros so 24USD
[12:51:49] <joe9> IchGuckLive: thanks a lot. exactly what I need.
[12:52:05] <IchGuckLive> therefor we all here
[12:53:07] <jdhnc> mrsun: nice,what did you use to make it?
[12:53:27] <IchGuckLive> the 2NMA will give you mutch more quality at hard Dust oil and grease in the area so its on you to spend 35USD
[12:54:04] <joe9> ichgucklive, thanks a lot.
[12:58:11] <IchGuckLive> joe9: Tusnelda the Germany Berlin Bearing store offers it at 6,5EUR
http://www.ebay.de/itm/1-Pendelkugellager-1205-DKF-25-x-52-x-15-mm-/110802182651?pt=W%C3%A4lz_Kugel_Rollenlager&hash=item19cc5321fb
[12:58:21] <joe9> ok, thanks.
[12:58:41] <joe9> IchGuckLive: quick question, will the play increase/decrease with angular contact bearings?
[12:59:44] <IchGuckLive> is there a double bearing in plase or only one
[13:00:14] <joe9> there is a bearing on top, and this is the bearing closer to the drill bit at the bottom of the quill
[13:00:17] <joe9> or spindle
[13:00:40] <IchGuckLive> this will give you a smooth round run
[13:00:49] <IchGuckLive> so decrease
[13:01:00] <joe9> decreases, ok, cool. will go with these then.
[13:01:13] <IchGuckLive> if you can put 2 of this in playe and your done to 0.001
[13:01:50] <MrSunshine> hmm, a woodworking cnc machine that feeds the stock throught itself, anyone know the name of it ?
[13:02:09] <joe9> oh, really. good to know. thanks.
[13:02:13] <IchGuckLive> as you see the numbers 27KN 19.000 RPM livetime it is well over your needs
[13:03:46] <archivist> MrSunshine, I have seen a fishing float grinding machine (cnc on balsa)
[13:06:21] <joe9> does anyone know how to convert the skf designation number (QJ 205 N2MA) to a manufacturer part number?
[13:06:38] <MrSunshine> http://best4sale.blog138.fc2.com/blog-entry-398.html there it is =)
[13:06:44] <joe9> I cannot search on that number in either mcmaster.com or mscdirect
[13:07:14] <MrSunshine> thats the type of machine im gonna build i think =)
[13:08:12] <MrSunshine> but for 1200mm stock =)
[13:08:38] <IchGuckLive> joe9: you are in atlanta or
[13:08:52] <joe9> IchGuckLive: I think the prices are for open bearings. It is probably not a good idea to use open bearings for drill press. Do you agree?
[13:09:04] <joe9> the ebay photo is an open bearing.
[13:09:11] <joe9> http://www.mcmaster.com/#angular-contact-ball-bearings/=ggn54h
[13:09:23] <joe9> double sealed ones are in the $100 range
[13:09:53] <joe9> $168 to be precise.
[13:11:11] <joe9> or, can I put some tape to seal it up?
[13:11:37] <IchGuckLive> http://www.ebay.com/sch/i.html?_nkw=25+x+52+x+15&_sacat=0&_odkw=1205+dkf&_osacat=0&_trksid=p3286.c0.m270.l1313
[13:12:31] <joe9> http://www.ebay.com/sch/i.html?_nkw=25+x+52+x+15+angular+contact+bearing&_sacat=0&_odkw=25+x+52+x+15+angular+contact+ber&_osacat=0&_trksid=p3286.c0.m270.l1313
[13:13:08] <joe9> the open ones are within my price range.
[13:13:27] <joe9> Is there something simple to convert the open ended one's to a sealed one.
[13:14:13] <IchGuckLive> look for 1205
[13:14:26] <joe9> ok, thakns.
[13:14:28] <joe9> thanks.
[13:18:58] <IchGuckLive> joe9: is this your mashine ? Craftsman 15″ Drill Press
[13:19:03] <joe9> yes.
[13:19:12] <joe9> central machinery 38142
[13:19:24] <joe9> sorry, no.
[13:19:31] <joe9> mine is central machinery 38142
[13:20:33] <IchGuckLive> 229.99USD
[13:20:59] <joe9> yes, I bought it used for $100. old but seems solid. want to remove the play on it.
[13:21:31] <IchGuckLive> it has 800wats so go for simple 6205 ball bearings
[13:21:40] <IchGuckLive> for 4Dollar eatch
[13:21:45] <joe9> ok, thanks, will do.
[13:22:35] <joe9> IchGuckLive: I like the angular contact bearing if it gives less play. but, it is a bad idea (it seems) to use open ones on a drill press.
[13:22:38] <archivist> joe9, add end float removal and then even cheap bearings are working in their angular contact range
[13:22:58] <joe9> let me google "end float removal"
[13:23:16] <IchGuckLive> at 3600rpm max shour they will
[13:23:47] <archivist> a wavy spring under the top bearing so no vertical play at all
[13:24:30] <mikegg> the more I use this Tormach tooling system, the more I like it
[13:24:39] <joe9> archivist: that sounds like a very good idea. let me check up on it.
[13:24:46] <IchGuckLive> i read the skf data book on 6205 it says 14KN axial 7.5KnRadial thats well ok
[13:26:06] <IchGuckLive> joe9: so 6205-2RS is your need
[13:26:21] <joe9> IchGuckLive: I went with 6205-zz, just to have it sealed.
[13:27:40] <jdhnc> does an angular contact bearing do any good, if there is no linear surface for the bearing to press against?
[13:28:56] <IchGuckLive> you need to press one on the other as a packet
[13:29:20] <IchGuckLive> the system will then work whin between them
[13:29:24] <IchGuckLive> so im off
[13:29:30] <IchGuckLive> By
[13:34:24] <jdhnc> joe9: did you check runout with the quill extended?
[13:35:19] <archivist> what is the quill to head play like anyway, is it adjustable
[13:57:03] <joe9> jdhnc: there was no difference in the runout with the quill extended or not. it was 0.003 inches. with the chuck, it was different though, 0.015 inches. I think the weight of the chuck is somehow amplifying it.
[13:57:13] <joe9> tried with a small chuck too, same runout.
[14:04:10] <joe9> i am not able to get the drive sleeve out from the head. This step: "Use a hardwood dowel and tap the drive sleeve assembly [photo 8] out from below that is, stick the dowel into the head from the bottom side and use a dead blow hammer to tap the drive sleeve out toward the top. It is a loose press fit but tap evenly so you don't cock it as you drive it out." from ...
[14:04:15] <joe9> ...
http://www.machinistblog.com/restoring-a-craftsman-15%E2%80%B3-drill-press/
[14:04:34] <joe9> I am soaking it with "Penetrating Blaster". curious if there is a tool that can help me.
[14:05:34] <jdhnc> PB blaster is great... smell never seems to go away though.
[14:05:54] <joe9> jdhnc: I hear that it can cause cancer too.
[14:06:03] <joe9> but, not sure of what else I can do.
[14:06:08] <jdhnc> so does everything else
[14:49:42] <archivist> joe9, photo 5 is end float adjustment, you can remove any play but that adds force to the bearings, a spring washer will set the maximum and allow some expansion with temperature
[14:50:13] <archivist> does not look like much/any space to do it though
[16:33:48] <danimal_laptop> hi
[16:40:15] <DJ9DJ> gn8
[18:12:33] <joe9> archivist: photo 5 where? sorry, if i missed it.
[18:13:27] <joe9> mikegg: I could not get the drive sleeve of a drill press out after much soaking with PB and banging with a wooden dowel, rubber mallet and then a small hammer.
[18:14:07] <joe9> mikegg: do you know of any local mechanic shop that could remove something like that? In CT, I could go to pepboys and they would do that for me (press'ing and stuff like that)
[18:14:34] <joe9> Just curious if mechanic folks in atlanta would do that, too.
[18:26:35] <FinboySlick> Oh cool, there's a free version of HSMWorks now.
[20:17:04] <Tecan> brahahahaha
[20:20:12] <joe9> this is pretty cool:
http://woodworkerbcncrouterproject.blogspot.com/
[20:29:15] <mikegg> joe9: would one of these guys do it?
http://i01.i.aliimg.com/photo/v0/112410863/Bearing_Puller_3_legs.jpg
[20:30:02] <mikegg> take a picture, let me see what you're working with
[20:30:03] <joe9> no, it is photo 7 of
http://www.machinistblog.com/restoring-a-craftsman-15%E2%80%B3-drill-press/
[20:30:14] <joe9> and, photo 8 when it is out.
[20:30:32] <joe9> i think you just have to hit it from the bottom to get it out.
[20:31:03] <joe9> I tried wood, did not budge. I put something sharp which damaged the lower bearing but still does not budge by more than a mm..
[20:31:19] <joe9> not exactly sharp, but a metal one
[20:31:56] <joe9> this is what the instructions say: Use a hardwood dowel and tap the drive sleeve assembly [photo 8] out from below â that is, stick the dowel into the head from the bottom side and use a dead blow hammer to tap the drive sleeve out toward the top. It is a loose press fit but tap evenly so you donât cock it as you drive it out.
[20:32:34] <mikegg> so photo 7 is a view from the bottom looking up?
[20:32:49] <joe9> no, it is from the top
[20:33:11] <mikegg> ok, and you're trying to drive it out the bottom?
[20:33:19] <joe9> bottom is just the bearing surrounding the drive sleeve.
[20:33:21] <joe9> mikegg: yes.
[20:33:43] <joe9> no, hammer it from the bottom so that it comes out of the top.
[20:33:50] <joe9> does that make sense?
[20:34:06] <joe9> photo 9 is the disassembled drive sleeve.
[20:34:17] <mikegg> ok got it
[20:35:13] <joe9> the nut/screw at the top is 24mm.
[20:38:45] <mikegg> http://www.harborfreight.com/four-wheel-drive-ball-joint-service-kit-4065.html
[20:38:56] <mikegg> i've got one of those hoo-hahs
[20:39:36] <mikegg> I can measure the gap, think it might fit and drive the sleeve out from the bottom
[20:39:42] <mikegg> ?
[20:40:10] <joe9> no way, the drive sleeve is in the drill press below where the spindle is.
[20:40:25] <joe9> in the main frame of the drill press.
[20:40:58] <joe9> i cannot even touch the bottom (other side) with my hand. it is deep inside where the quill/spindle starts from.
[20:41:11] <joe9> I can only get to it with a dowel oslt.
[20:41:25] <mikegg> what is the dowel made of?
[20:41:35] <joe9> mikegg: I tried wood. did not budge
[20:41:44] <mikegg> wood might be too soft
[20:41:50] <joe9> then I tried a metal rod, not much change.
[20:42:09] <joe9> then I tried one of those pry bars with a chisel shaped edge, it budged an mm.
[20:42:20] <mikegg> eek
[20:42:38] <joe9> but, it also rendered the inner bearing useless. I am planning on replacing the bearings anyway.
[20:44:11] <mikegg> do you have the drill press flipped upside down?
[20:44:40] <mikegg> have you put a blow torch on it yet?
[20:45:50] <mikegg> do you have a dowel you can stick in the top as shown in photo 8?
[20:46:06] <mikegg> it might be cocked in the sleeve, in which case hammering won't help
[20:46:39] <mikegg> you might try sticking something in the hole, and working it around in a circular motion to see if you can un-cock it
[20:46:59] <mikegg> *photo 7
[20:49:32] <joe9> mikegg: sorry, was lost for a moment there
[20:49:51] <joe9> mikegg: yes, I removed the piece from the drill press. I have the whole piece out.
[20:50:02] <joe9> i can take it to a shop or anything pretty easily.
[20:50:26] <mikegg> well, I dunno anyone off the top of my head
[20:50:57] <mikegg> I've had good luck before just driving around to different shops and asking if they can press something out for me
[20:51:06] <joe9> ok, thanks.
[20:51:11] <joe9> what is "cock"ing?
[20:51:16] <mikegg> last time I went to Pep Boys on roswell road
[20:51:29] <mikegg> like, not straight - binding
[20:52:13] <joe9> ok, thanks. will find a pepboys or a mechanic shop first thing tomorrow.
[20:52:30] <mikegg> the one time you got it to move, If you didn't hit it dead center, you exerted a moment about a radial axis of the bearing
[20:52:57] <mikegg> that radial moment can make it take up more room within the sleeve, because it's cylindrical
[20:53:13] <joe9> oh, ok.
[20:53:20] <mikegg> you have to correct it before you continue, otherwise, the sleeve may get trashed
[20:53:33] <mikegg> just pressing it out MAY work
[20:53:41] <mikegg> but I've trashed things trying to do that
[20:54:00] <joe9> i will take it to a mechanic shop and see if they can do something.
[20:54:19] <joe9> I do not mind replacing the sleeve, if it is too badly broken.
[20:54:32] <joe9> just have to wait for the part to arrive, which is a pita.
[20:55:17] <mikegg> ahh we got our terminology crossed. when I said sleeve, I was referring to hole, not the part you're trying to hammer out
[20:56:02] <joe9> oh, ok. that would suck.
[20:56:20] <mikegg> yeah
[20:56:31] <joe9> I do not think I touched the hole or the border, unless, the bearing pressed into it and did something.
[20:57:09] <mikegg> right, picture a thin disk within a cylinder. consider what happens when you bang on the outside of the disc vs the center
[20:57:32] <mikegg> doesn't take much to make it bind
[20:58:23] <joe9> you are correct, that would suck.
[20:58:36] <joe9> live and learn, huh..
[20:58:45] <joe9> or, learn and live...
[20:58:52] <mikegg> I don't mean to be patronizing or anything - that sort of thing has caused me plenty of hearache in the past...
[20:59:21] <joe9> i am sure... everything I touch, I break a part of it.
[20:59:54] <mikegg> i dunno tho, looks like those bearing have a nice beveled edge, and they are pretty tall for the diameter...
[21:02:14] <mikegg> well, lemme know how it works out
[21:02:22] <joe9> ok, will do. thanks.
[21:02:42] <mikegg> can you run a manual lathe?
[21:02:56] <joe9> http://atlanta.craigslist.org/sat/tls/2867715878.html
[21:02:59] <joe9> mikegg: no.
[21:03:26] <mikegg> yeah, I saw that - did you ask for some pics?
[21:03:42] <joe9> mikegg: no, will do. have you seen the pics?
[21:03:46] <mikegg> nah
[21:03:50] <joe9> why do you ask about the manual lathe?
[21:04:38] <mikegg> if you want, we can turn a mandrel that is the right diameter. I'd be suprised if that won't get it out.
[21:04:48] <mikegg> I'
[21:05:30] <joe9> ok, thanks a lot. I will see if I can get it out with the mechanic, if not, I will bother you about it.
[21:05:35] <mikegg> 've got enough crap floating around..
[21:06:15] <mikegg> like a 1.5" OD bar of tool steel
[21:09:18] <joe9> ok, thanks a lot.. will ping you by afternoon, if I cannot get this sorted out by then.
[21:09:36] <mikegg> you bet dude, good luck
[21:12:28] <joe9> thanks.
[21:42:37] <hatch789> anyone alive in here tonight?
[21:43:04] <hatch789> PCW, did you by chance get some time to look at my BIT file for me?
[21:46:02] <pcw_home> yeah sent it to dave I think
[21:46:34] <hatch789> doh!
[21:46:51] <hatch789> you don't happen to have a copy for me to try it now do you? He's been in bed long ago
[21:48:35] <pcw_home> yeah I can forward it to you
[21:49:19] <hatch789> great. thank you. :) -Did you remember to lower the resolver voltages for the driver windings?
[21:51:09] <pcw_home> I though about it more and realized its better to divide the signal down at the sine/cos inputs
[21:51:11] <pcw_home> otherwise it will reduce the noise margin
[21:51:32] <hatch789> ok.
[21:52:15] <hatch789> sounds like a more accurate end-result for me with regard to axis sensitivity... right?
[21:52:36] <pcw_home> looks like maybe 3/1 so 3 matched resistors in series outer leads go to resolver, 2 leads from center resistor to 7I49
[21:53:42] <hatch789> ok. Any idea on the Ohms I need?
[21:53:51] <pcw_home> less noisy because the long signal wires from from the resolver are left at a high level until they get to the 7I49
[21:54:22] <hatch789> makes sense
[21:54:29] <pcw_home> 7I49 has ~100K input impedance so maybe 3x 4.99K 1%
[21:55:19] <pcw_home> if you have a bunch matching to better than 1% in 3s would help
[21:55:40] <hatch789> 3k you mean?
[21:56:03] <pcw_home> (no matched in sets of 3 if you have a good ohmmeter)
[21:56:19] <pcw_home> a=b=c
[21:56:19] <hatch789> ahh
[21:56:23] <hatch789> yup
[21:56:29] <hatch789> I understand the wiring
[21:56:40] <hatch789> 4.99k ....will 5k resistors be OK?
[21:57:13] <pcw_home> 5K usually means 5% so not so good
[21:57:21] <hatch789> ahh thank you for clarifying that
[21:57:44] <pcw_home> 3k to 10 K would be OK
[21:57:57] <hatch789> I have a LOT of resistors. Just need to look what I have. Some are from government issue and super high accuracy
[21:59:02] <pcw_home> they just need to be the same. sorry for the nuisance industry standard for resolvers is 2-1 but you never know what you will find
[21:59:46] <hatch789> It's ok. I can fix this problem. I'll go in to check what I have. Do you need my e-mail address again to send me the BIT file?
[21:59:59] <pcw_home> static error is about 1 degree for 1% mismatch between sine/cosine
[22:01:02] <hatch789> I'll be careful as I check. I have a ton of the light blue resistors from some really accurate set
[22:01:17] <hatch789> just hoping they're in the range I need. But they're in the house in the basement.
[22:02:48] <pcw_home> yeah i need your email addy
[22:02:53] <hatch789> chris@oupower.com
[22:03:56] <hatch789> I'm going to head in to the house; check what I have by way of resistors and then probably call it a night...
[22:04:59] <pcw_home> ok sent and 'nite
[22:07:36] <hatch789> thanks. Goodnight
[22:15:53] <hatch789> pcw_home, once I put the bit file in the proper directory, do I need to re-compile or something before firing up my EMC2?
[22:16:03] <hatch789> I ask because the velocity is still jumping around right now.
[22:19:08] <mikegg> yeah, you need to make sure that your ini file is pointing to the correct firmware and restart linuxccn
[22:19:39] <hatch789> it is pointing to the same as it was before. I simply replaced the file right over-top of the old one
[22:20:02] <hatch789> the md5sum is definitely different on the new BIT file so I know it's been updated now.
[22:20:15] <hatch789> so do I need to re-compile or do a build?
[22:20:30] <mikegg> uhh, should suffice to restart the program
[22:20:46] <hatch789> damn ...that's what I thought
[22:20:55] <hatch789> not sure why my velocity is still all over the place then
[22:21:21] <hatch789> unless the voltages being out of range so much are causing this?
[22:21:38] <mikegg> i'm not real familiar with resolvers
[22:21:45] <mikegg> and I'm all out of vodka
[22:22:24] <mikegg> but I would avoid powering up your servo amps until you get it sorted out
[22:22:39] <hatch789> yeah I won't power them up yet
[22:22:44] <hatch789> ok I'm off to bed
[22:33:57] <mikegg> let me know when you get it resolved
