#emc | Logs for 2011-06-21

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[00:29:26] <mikeggg> is anyone using the Mesa 7i39?
[00:32:04] <Valen> kicad?
[00:32:46] <mikeggg> Ficus?
[00:33:56] <Valen> andypugh: Is there a FOS equivalent of Eagle to steal the editor from? : kicad
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[00:35:58] <elmo40> interesting off topic news (speaking about FOSS) http://arst.ch/pqv Oracle wants to give OOo to the Apache Foundation.
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[00:45:43] <andypugh> Interesting times.
[00:46:15] <andypugh> I have never really worked out why folk contribute to Open Source projects in the first place.
[00:46:44] <Tom_L> guilt from a previous life
[00:49:45] <andypugh> I wonder if there are statistically more catholic contributors?
[00:50:24] <elmo40> lol
[00:50:58] <Jymmmm> andypugh: I'd say Jewish as their all cheap bastards!
[00:51:03] <Jymmmm> they're
[00:51:10] <elmo40> there
[00:51:14] <elmo40> pick one already
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[00:51:30] <elmo40> when you speak, does it matter? ;)
[00:51:31] <Jymmmm> they are
[00:51:44] <Jymmmm> Learn to speak typo!
[00:52:08] <andypugh> "Careful" folk like Yorkshiremen and Scots would be expected to use the software, but not necessarily contribute.
[00:54:08] <Jymmmm> FINALLY got the new FW flashed
[00:54:20] <Jymmmm> Now waiting foe the isos
[00:54:57] <Tom_L> would you like to buy a consonant?
[00:56:18] <Jymmmm> I ars kolledge edjoomakated
[00:59:09] <Jymmmm> HAHAHAH OH THIS IS COOL!!!
[01:00:01] <Jymmmm> Just got this... It's a hdd case that mounts iso files as optical drive
[01:00:04] <Jymmmm> http://www.youtube.com/watch?v=OxvzSNp-tPM&feature=bulletin
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[01:32:05] <robin_sz> evening ;0
[01:32:16] * robin_sz scratches his ear
[01:34:14] <andypugh> Shouldn't you be in bed? It's 0230
[01:35:24] <ds3> any recommendations for a simple 2.5D CAM?
[01:35:39] <andypugh> SheetCAM?
[01:35:55] <andypugh> That might be nearer 2.1D though
[01:36:13] <ds3> the demo does everything I wanted but I donno how clean the posts are
[01:36:44] <ds3> andypugh: have you used it?
[01:36:50] <andypugh> Should be good, the author is active on the EMC2 mailing list.
[01:37:26] <ds3> any comments on pyCAM?
[01:37:45] <andypugh> I have used SheetCAM, it has always done what I wanted.
[01:38:00] <andypugh> But my requirements have so far been modest.
[01:38:12] <ds3> so you paid for it and are still happy?
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[01:39:01] <andypugh> No, I think I am still using the Demo, like a naughty person.
[01:39:13] <ds3> the reason I am asking is hand writing G-code is getting old... keep on getting G03 vs G02 mixed up
[01:40:04] <andypugh> I haven't found a CAM that uses O-loops yet. So I normally code by hand.
[01:40:33] <andypugh> (don't read that statement expecting to find logic)
[01:40:50] <ds3> do your code get big enough to take advantage of O-loops?
[01:43:15] <andypugh> probably not. But it makes is easier when hand-coding. Esecially lathe code.
[01:43:40] <ds3> ah
[01:43:54] <ds3> I tried getting around that by writing a perl script to write the G-code
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[01:47:38] <andypugh> Typical code: (I struggled to find a pastebin which was up) http://clippy.cz.cc/index.php?show=473
[01:49:19] <andypugh> Most of the time on my lathe I don't use programs at all, I have turning/facing/threading etc subs defined and a PyVCP panel to enter the endpoints.
[01:49:41] <andypugh> That doesn't work as well for milling.
[01:52:14] <jdhNC> is your setup publicly available?
[01:53:01] <andypugh> http://www.bodgesoc.org/lathe/lathe.html
[01:53:31] <jdhNC> cool!
[01:53:54] <jdhNC> anyone have suggestions for stepper sizing for a 9x20?
[01:54:31] <ds3> NEMA-23's?
[01:54:47] <jdhNC> heh, that covers a lot of ground though
[01:55:08] <andypugh> My 9x20 has NEMA 23.
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[01:55:19] <andypugh> I might be tempted to try a 34 on the Z
[01:55:21] <ds3> yes... I am just going by what's on the Orac which is about the same size as a 9x
[01:55:27] <jdhNC> I have 60oz 23's and 425oz 23's
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[01:56:31] <andypugh> I have a 2Nm 23 on the X and that has only ever stalled when I wanted it to. (8mm x 2.5 ballscrew, 1:1 gearing).
[01:56:34] <ds3> wasn't there article out there about higher torque motors wind up being slower
[01:56:43] <jdhNC> I guess I'll just put the biggest one I have at the time on X
[01:57:14] <andypugh> My Z is a 35Nm 23 and still can't push a drill bit much above 8mm
[01:57:18] <jdhNC> any idea if the stock 9x20 screw is usable ?
[01:57:42] <ds3> andypugh: do you have a ball screw on the Z?
[01:57:47] <andypugh> Probably not for long.
[01:58:30] <andypugh> Normally the lathe uses the keyway on the leadscrew to drive gears against the rack. You sound like you plan to use the split-nut full-time
[01:58:58] <jdhNC> yeah, or I could add a real nut
[01:59:06] <andypugh> ds3: Yes, I have a 20mm ballscrew on Z and an 8mm (biggest that would fit) on X.
[01:59:28] <jdhNC> does Z need speed or force?
[02:00:20] <ds3> X force is for plunge cut and facting
[02:00:30] <ds3> Z is for drilling, and turning
[02:00:34] <andypugh> Even the 8mm was a serious squeeze: http://www.cnczone.com/forums/mini_lathe/63621-mini_lathe_cross_slide_ballscrew-2.html (post 15 onwards is my lathe)
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[02:01:33] <andypugh> My experience is that X force is a lot lower than Z force. I even part happily with the little23
[02:01:51] <andypugh> (my lathe has parted a 3" stainless bar)
[02:02:34] <jdhNC> is that a 9x20?
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[02:02:47] <ds3> you got flood?
[02:03:02] <andypugh> I think it is a 9x30
[02:03:06] <andypugh> No coolant at all.
[02:03:17] <andypugh> Might be 7x?
[02:03:19] <ds3> wow
[02:03:34] <ds3> I've snapped partting tools for parting even 12L14 dry
[02:03:38] <andypugh> I dribble tapping fluid sometimes
[02:04:22] <jdhNC> the gear change stuff, oilers, etc look like mine
[02:04:44] <jdhNC> except most everything on mine is currently brown
[02:05:30] <andypugh> Fairly clear view here: http://www.youtube.com/watch?v=gnBraegy6lA
[02:06:45] <ds3> that cross slide is a 9x
[02:07:01] <ds3> 7x's don't have the 2 T slots
[02:07:32] <andypugh> Well, mine is a mill too, so that could have been changed.
[02:07:54] <andypugh> (And a lathe cross-slide makes a ver poor basis for a mill)
[02:08:14] <ds3> a milling accessory does work reasonably well though
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[02:11:27] <andypugh> ds3: Step-by-step of making some much better saddle retainers: https://picasaweb.google.com/bodgesoc/Gibbs#5397761515711545458
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[02:31:31] <mikeggg> cool web album!
[02:32:59] <mikeggg> did you mount that z-axis / spindle on your lathe?
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[08:17:53] <nicko> ello all
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[08:35:05] <mrsunshine> hmm, ramping into the material compared to plunging, what is to be prefered?
[08:35:19] <mrsunshine> JT-Shop, i havent done any parting off? :)
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[08:38:44] <archivist_emc> ramping can have better chip clearance
[08:40:36] <mrsunshine> but lets say im clearing a profile, its done in 5 steps, should i make each plane flat before i do a new ramp down ?
[08:41:41] <Valen> lots of tools dont like plunging
[08:41:45] <archivist_emc> ramping is needed when the cutter cannot cut in the Z direction
[08:42:09] <mrsunshine> oki, so a non center cutting endmill for example ?
[08:42:24] <archivist_emc> if you can come in from outside then also no ramping needed
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[08:43:17] <mrsunshine> true, but this is cut out of a solid piece that i cant go from the outside on =9
[08:43:19] <mrsunshine> =)
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[08:46:32] <archivist_emc> then ramp because the tool is plunging
[08:48:24] <archivist_emc> or buy slot cutter which can plunge
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[08:54:38] <mrsunshine> but looking at my machine, it does not like to plunge ... it bends the head backwards
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[08:54:50] <mrsunshine> was also thinking there if ramping would ease that on the machine =)
[08:58:08] <archivist_emc> plunge slower if the machine is bending again MUST be a slot cutter not normal endmill
[09:05:57] <nicko> anyone here care to talk electronics for a sec or twelve ?
[09:08:26] <archivist_emc> just ask the real question
[09:09:07] <nicko> two questions
[09:09:40] <moopy> are you sure its only two questions?
[09:10:03] <nicko> two questions for now
[09:10:12] <moopy> how long is each question?
[09:10:28] <nicko> time will tell
[09:10:33] <archivist_emc> hehe...just ask the question...
[09:10:46] <moopy> do any of the questions have the word if in them?
[09:10:56] <moopy> 'IF'??
[09:11:01] <nicko> Mesa 5i22 PWM outputs - I expected one pin outputting PWM - there seem to be three allocated to each axis
[09:11:15] <nicko> I expected 'spindle PWM'
[09:11:21] <moopy> what sort of level of experience are the questions aimed at?
[09:11:54] <moopy> DON'T ASK THE QUESTION UNTIL I HAVE FINISHED ANALYSING IF IT IS WORTH ANSWERING!!!
[09:12:01] <nicko> I got: Spindle PWM Gen-P - Spindle PWM Gen-D & Spindle PWM Gen-E
[09:12:09] <nicko> Question:
[09:12:22] <nicko> What are P, D and E ?
[09:12:48] <moopy> I'M NOT GOING TO ANSWER THE QUESTION NOW, YOU DID NOT SUBMIT A FULL FEASABILITY STUDY!!
[09:12:53] <nicko> (this is via the pncconf config application)
[09:13:29] <nicko> if you dont know Mesa stuff, or the question is otherwise malformed due to my ignorance - next question:
[09:14:13] <moopy> HAVE YOU TRIED REAding the source?
[09:14:23] <archivist_emc> nicko, best to ask mesa questions when USAians wake up later
[09:14:29] <nicko> How do 'you' (i.e. does the normal bloke on the street) deal with single ended and differential pair mismatches in your set up ?
[09:15:01] <archivist_emc> I may make an interface
[09:15:03] <nicko> I have a few - for instance: single PWM out to differntial input
[09:15:26] <nicko> single +/- 10v analog command to differential input
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[09:15:55] <nicko> single ended enable logic to differential logic input
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[09:16:16] <nicko> and then differential encoder out to single ended in
[09:16:45] <nicko> the enable logic seems simple enough - differential line drivers seem well suited to logic
[09:17:20] <nicko> but PWM ? what sort of specs do I need to take into account propagation delays and so on ?
[09:17:48] <nicko> and +/- 10v analog - I cant find an analog driver that would suit the bill yet
[09:18:31] <nicko> if the signal is differetial and the input is single you just go with thr +ve differential signal huh
[09:18:52] <Valen> mesa have their PWM + direction > +-10v stuff
[09:19:32] <nicko> I have the 7i33 - which is PWM to analog if that is what you refer to
[09:19:40] <nicko> but the analog output on it is single ended
[09:21:38] <archivist_emc> analogue is normally single ended signal and gnd(reference)
[09:21:42] <moopy> I WISH I KNEW WHAT YOU WERE TALKING ABOUT
[09:22:00] <moopy> do you have a lot of system noise??
[09:22:27] <moopy> balanced signals are only required if you have noise problems
[09:24:32] <nicko> yup
[09:24:34] <nicko> I get it
[09:25:07] <nicko> so you have two inputs - +ve and -ve
[09:26:05] <nicko> the workaround is to put your single signal to +ve while the ground of the source device is twisted with that and connected to the -Ve input
[09:26:21] <nicko> the ground of the recieving device is connected to the shield of the cable
[09:26:35] <nicko> thats the word on the street (heard it here 24hrs ago)
[09:27:47] <moopy> I would buy a balanced signal driver
[09:28:18] <moopy> I cannot believe there would be propagation delays over a few meters of cable??
[09:29:01] <nicko> The propagation delays are in the device
[09:29:15] <nicko> to make a mirror image of a signal takes time
[09:29:19] <moopy> you mean latency?
[09:29:52] <moopy> buy a better signal inverter
[09:29:55] <Valen> to mirror a voltage should be ~instant
[09:29:59] <nicko> "Latencies may have different meaning in different contexts"
[09:30:11] <nicko> define 'instant'
[09:30:27] <nicko> how does a semiconductor so its work in zero time ??
[09:30:30] <moopy> latency is normal in a digital circuit
[09:30:34] <nicko> yes
[09:30:48] <nicko> and some circuits react to it badly
[09:31:05] <moopy> i think delays in most analog devices is femto seconds
[09:31:11] <Valen> if you were toggling at a few hundred mhz then I can see the delays being an issue
[09:31:30] <Valen> a "high speed" op amp is all that'd be needed i'd imagine
[09:31:38] <nicko> "Input to output delay 2014 10 ns typical"
[09:31:46] <nicko> which is probably fine
[09:31:52] <nicko> I mean *is* fine
[09:31:54] <moopy> yes cnc machines should not be effected by a few nano seconds delay
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[09:32:34] <moopy> though it depends on your pwm frequency
[09:32:41] <nicko> heh heh
[09:33:08] <nicko> did you -ahem- just ask the question I was in part asking earlier ??
[09:33:17] <moopy> i don't really know anything about this subject though
[09:33:35] <Valen> PWM freq shouldn't be an issue with the inverting driver
[09:33:41] <nicko> seems like you may do
[09:33:42] <Valen> one would invert after PWM
[09:33:50] <moopy> like most people on the internet i am just talking shit about something I have no experience of
[09:34:04] <Valen> PWM, Direction, Enable
[09:34:13] <Valen> would be my guess
[09:34:16] <nicko> Oh - THANK YOU
[09:34:20] <nicko> good good
[09:34:24] <nicko> makes sense
[09:34:29] <nicko> ONE QUESTION DOWN
[09:34:32] <nicko> Awesome
[09:35:00] <moopy> how much do mesa cards cost?
[09:35:11] <awallin_> 200ish
[09:35:31] <nicko> many different cards
[09:35:40] <nicko> and add-ons
[09:35:46] <moopy> would they give me one free for demo purposes?
[09:35:50] <Valen> no
[09:35:56] <nicko> the biggest cost is the time spent figuring out which one you need
[09:35:59] <Valen> well thats the first pass at the answer
[09:36:02] <moopy> I only ever used the parallel port
[09:36:03] <nicko> and thats no joke in my case
[09:36:20] <Valen> there are cards down to $80
[09:36:23] <moopy> parallel is cheaper
[09:36:28] <awallin_> did anyone make FPGA-firmware that actually benefits of the bigger gate-count on the 22 and 23 models? or does everything still fit on a 5i20 ?
[09:36:31] <Valen> mesa is "better" ;->
[09:36:42] <Valen> i believe mesa have stuff that uses other bits
[09:36:49] <Valen> but EMC doesn't use those firmwares
[09:36:55] <nicko> I think the 5i20 is prob the way to go for CNC
[09:37:06] <Valen> EMC uses the mesa cards as being fairly dumb
[09:37:17] <awallin_> seems to be 168eur from the eu dealer
[09:37:35] <nicko> but I have lofty ambitions of 8 axis and so on
[09:37:52] <nicko> the card will likely biodegrade before I get there
[09:38:03] <awallin_> 3-phaser servo or ac-induction driver would be nice to play with in fpga...
[09:40:05] <Valen> we use mesa for our servo stuff
[09:40:18] <Valen> the mesa hardware was the simplest part of it all lol
[09:40:20] <Valen> it all just worked
[09:41:47] <nicko> Yeh, it seems to go huh - I spent a while thinking I had toasted it with a static cat but I just had my oscope probe on the wrong pins
[09:42:19] <nicko> very releaving to see the chargepump on the right output
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[09:54:06] <nicko> hmmm - ok, a 4096 count encoder on a spindle driving at 5000rpm
[09:54:51] <nicko> yup 10ns delay should be ok
[09:58:53] <MuPie> I got a dual parallel pci card from china for $9
[09:59:17] <MuPie> with 3 parallel port can easily run 8 axis
[10:01:37] <nicko> uh huh, but not at the rates I'd be after
[10:01:52] <nicko> and no nifty softDMC firmware already coded !
[10:02:19] <nicko> I could be wrong however
[10:03:34] <archivist_emc> MuPie, I run 5 axis on one parallel port, but that does mean I dont have limit switches
[10:03:36] <MuPie> i have no idea, seems okay for what i use it for though, but always nice to have decent hardware if you can afford it
[10:04:20] <MuPie> i think I got 6 axis from one parallel port, but only with step direction outputs
[10:05:31] <MuPie> to run etchservo config I needed 3 parallel port for 7 axis puma robot
[10:06:57] <MuPie> you should be able to get limit switches and 5 axis on one port
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[13:09:49] <skunkworks_> http://www.youtube.com/watch?v=2mGvAUUDuH0
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[14:54:46] <tom3p> awallin archivist et al OS 5 axis simulation (VB) http://5axes.free.fr/index_en.htm
[14:57:12] <tom3p> especially http://5axes.free.fr/devel_NCVisu_en.htm
[15:00:04] <awallin_> interesting. I wonder how much time it would take to read the VB code and understand it... is the author someone who hangs around here or #cam or somewhere?
[15:01:35] <awallin_> code is commented in french....
[15:04:05] <tom3p> no idea, just stumbled onto it. i'll unzip it and look into the tar, and maybe the executable will run under VM
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[15:24:37] <Mjolinor> can soemone please give me a link to
[15:24:39] <Mjolinor> http://www.linuxcnc.org/Hal_Introduction.pdf
[15:25:18] <Mjolinor> I am contemplating buying a faulty denford orac and am trying to work out if this software talks direct to the stepper motor drivers through the parallel port or if it interfaces to the existing ahrdware
[15:26:14] <JT-Shop> does the drive take step and direction inputs, velocity or other input?
[15:26:44] <cradek> http://www.rcgroups.com/forums/showpost.php?s=74ce85626bd4ce5f25c75e2f899e98a6&p=5169804&postcount=12
[15:26:56] <Mjolinor> the thing dosnt work right now and I know (becasue I have mended them in the past) that the hardware they came with is really poor
[15:27:01] <cradek> looks like some serial thing
[15:27:16] <cradek> you will have to find the motor drivers and possibly motor power supply, and remove everything else
[15:27:36] <Mjolinor> I am hoping to remove the hardware entireley and leave jsut the inverter for the headstock motor and stepper motor / sensor output from all the mechanics
[15:27:38] <cradek> none of the old brains are useful with EMC2
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[15:27:50] <Mjolinor> normally it used a serial interface
[15:28:03] <Mjolinor> thats what I am hoping, the old brains are knackered
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[15:28:11] <cradek> if you can find technical information about the motor drivers in there, we can give you more specific advice
[15:28:27] <Mjolinor> so I will have the mechanics only that I iwll interface to new driver boards but they need feeding from soemthing,
[15:28:59] <Mjolinor> so the EMC software puts out stepper motor instructions from parallel port and accepts sensor input?
[15:29:14] <cradek> that is one of the ways it can run a machine, yes
[15:29:18] <Mjolinor> no onboard processing or interpretation for the lathe to do itself
[15:29:21] <Mjolinor> ok
[15:29:28] <Mjolinor> that answers my question :)
[15:29:29] <Mjolinor> thanks
[15:29:39] <cradek> no, you'll remove all computerish smarts from it
[15:30:23] <Mjolinor> excep the main inverter, that will still ahve to be controolled over an interface I think
[15:30:27] <Mjolinor> even if I replace it
[15:30:47] <Mjolinor> the machine has a normal 3 phase motor and inverter driver
[15:32:00] <Mjolinor> is there a document anywhere explaining hte hardware connections. The link I found doesnt work
[15:33:05] <jdhNC> nifty looking machine
[15:33:18] <Mjolinor> they are pretty good if you can keep tehm working
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[15:33:58] <Mjolinor> and they are good money if they work but I am familiar with 3 of them, one I mend regualrly, a second is one a friend bought for £100, the third is a non worker I was thinking of buying
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[15:35:19] <KimK> Mjolinor: Try here for the HAL manual. Hopefully I'll have an updated one soon. http://www.linuxcnc.org/docs/HAL_User_Manual.pdf
[15:35:21] <jdhNC> there is an 18 page word doc with some guys conversion using Mach3
[15:35:22] <Mjolinor> as I have mended it so many times I sort of think I dont want a lathe that only works when you don't need it and knowing the mechanics are excellent on them a good alternative interface system would make a spectacular machine really
[15:36:09] <Mjolinor> ok, got the HAL doc, thatnks
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[15:36:23] <KimK> Mjolinor: Where did you spot that dead link?
[15:36:41] <Mjolinor> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl/emcinfo.pl?EmcVersion2
[15:36:46] <Mjolinor> both those links are dead
[15:37:05] <KimK> Looking now...
[15:38:16] <Mjolinor> http://www.brighthand.com/default.asp?newsID=12712
[15:38:31] <Mjolinor> I have one of those spare and it seems to me an ideal bolt on for the side opf the lathe
[15:38:52] <KimK> Mjolinor: Thanks, I'll fix the links, but a little later.
[15:41:50] <Mjolinor> ok, thansk for the help, going off to read this doc. I am sure I will be abck if this comes to fruition :)
[15:41:57] <Mjolinor> depends how cheap I can buy it :)
[15:42:01] <Mjolinor> thanks again
[15:42:04] <Mjolinor> bye
[15:42:08] <KimK> Sure, come back anytime. Good luck.
[15:42:15] <Mjolinor> I am sure I will
[15:42:27] <Mjolinor> and I am equally sure that by the time I have finished you will be sick of me :)
[15:42:50] <Mjolinor> jsut quickly
[15:43:13] <Mjolinor> I see nothing to stop me jsut connecting a few stepper motors and shaft encoders up to this without an actual machine
[15:43:20] <Mjolinor> that should be possible shouldn't it?
[15:52:50] <JT-Shop> normally you don't use encoders with steppers
[15:52:50] <JT-Shop> not a good match
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[15:54:30] <cpresser> JT-Shop: you can use stepgen in velocity mode. so why is this a bad idea?
[15:55:52] <JT-Shop> as I understand it a stepper will not respond like a servo to catch up or something like that
[15:59:11] <Mjolinor> this is true :)
[15:59:57] <Mjolinor> but you do need an encoder if you wnt to be sure the stepper did as it was told
[16:01:18] <JT-Shop> yes, I have seen a PHD linear that did that and the software just tacked on steps at the end if needed to reach the final position
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[16:01:54] <jdhNC> that might be useful if all you cared about was end position, and you could tell it 'this is the end'
[16:02:03] <JT-Shop> yea
[16:02:15] <JT-Shop> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Steppers_With_Encoders
[16:02:34] <KimK> Mjolinor: You can easily use an encoder with steppers just in open-loop mode for following-error monitoring. Trying to close the loop could be problematic under error conditions.
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[16:04:07] <Mjolinor> I hadnt actually thought about it, I jsut assumed there would be feedback form the saddle adn cross slide on this lathe but I do know it uses stepper motors so probably now oyu have mentioned it, there iwll be no feedback, it will jsut assume that the part moved because it sent instrucitons to move
[16:04:27] <Mjolinor> and my typing sucks
[16:04:52] <KimK> Link fixed, I'll be back later.
[16:05:08] <Mjolinor> I know the headstock has a slotted disk that returns one per rev adn other signals
[16:09:10] <archivist_emc> tom3p, interesting
[16:09:14] <tom3p> how fast could you move in an 'exact-step' mode? take a step, check an encoder, take a step, check....
[16:10:43] <jdhNC> is a single step generally outside following error limits?
[16:14:41] <cradek> I think the feedforward term fixes this problem
[16:16:13] <cpresser> why not just run the steppers in velocity mode and use a regular PID with the encoders? like in a servo configuration?
[16:20:25] <skunkworks_> JT-Shop: tube recieced. looks like it will work perfectly. once I do some machining on it - I will send you some picutures
[16:20:35] <skunkworks_> Thanks again
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[16:24:07] <JT-Shop> skunkworks_: Cool can't wait to see it
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[16:56:36] <skunkworks> logger[mah]:
[16:56:37] <logger[mah]> skunkworks: Log stored at http://emc.mah.priv.at/irc/%23emc/2011-06-21.html
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[17:15:02] <JT-Shop> skunkworks_: seen this? http://psha.org.ru/irc/
[17:17:31] <IchGuckLive> JT what time zone is the log
[17:18:44] <skunkworks> JT-Shop: yes - but When I do log(tab) the first one is mah ;)
[17:21:18] <alex4nder> hey
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[17:27:44] <skunkworks> seems like a lot of work for what emc would do pretty easy with classic ladder ... http://www.cnczone.com/forums/hardinge_lathes/129658-chnc_turret_plc_conversion_log-5.html
[17:27:58] * skunkworks jugs emc again.
[17:28:02] <skunkworks> heh
[17:28:05] <skunkworks> *hugs
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[17:46:47] <JT-Shop> yea just a few lines in classic ladder and your done
[17:51:17] <JT-Shop> skunkworks_: made me reply to it :/
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[17:53:22] <skunkworks> They call me the instigator... :)
[17:53:37] <JT-Shop> LOL
[17:53:56] <JT-Shop> I thought it was a tasteful reply
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[17:54:28] <skunkworks> very nice!
[17:54:45] * JT-Shop goes to make some 6061 chips
[17:55:54] <syyl> have fun :D
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[19:12:11] <skunkworks> ?
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[20:09:56] <skunkworks> can you melt viton oring stock together?
[20:12:35] <syyl> try a flexible CA glue
[20:12:51] <syyl> works like hell :D
[20:13:07] <skunkworks> really?
[20:13:12] <syyl> yes
[20:13:17] <skunkworks> neat.
[20:13:19] <skunkworks> thanks
[20:13:33] <syyl> glued together some small belts from o-ring stock
[20:17:32] <skunkworks> worht a shot. (needs to hold at the most 200psi)
[20:18:23] <ssi> bah, traveling plans are so damned stressful
[20:19:41] <syyl> i also fixed broken o-rings with ca-glue...
[20:19:49] <syyl> a bit macgyverish...
[20:21:00] <willburrrr2003> syyl: was it you that mention using peck drill cycle for parting on your lathe?
[20:21:11] <syyl> sry, no
[20:21:18] <syyl> my lathe has cranks and levers :D
[20:21:52] <willburrrr2003> hehe ok, thouht it was you for some reason...wonder who that was....mind must be going ;)
[20:22:09] <syyl> :D
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[22:27:18] <JT-Shop> Woot! a 1/4hp coolant pump kicks ass compared to a 1/25hp
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[22:32:47] <DaViruz> i have a 13/384hp
[22:34:19] <JT-Shop> what is that in metric?
[22:35:50] <DaViruz> i'm basically just being an ass
[22:35:59] <JT-Shop> me too
[22:36:19] <DaViruz> to tell the truth i belive it is 0.9kW on my big mill
[22:36:32] <DaViruz> i guess that is somewhere along the lines of 1.2hp
[22:38:05] <JT-Shop> at least it is big enough to hook the wash down hose back up now
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[22:39:34] <JT-Shop> this is the 4th pump on the VMC :/
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[22:41:13] <JT-Shop> the first two were little giant water fountain pumps 240vac 1ph connected to 480vac 1ph... they didn't last long
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[22:41:49] <DaViruz> i have a (injection) fuel pump on my small mill
[22:41:51] <DaViruz> seems to work ok
[22:41:52] <JT-Shop> about that time I figured out what they had done when they added the pump at the machinery dealer and got the bigger 1/25hp pump
[22:42:34] <JT-Shop> this last one is a Gray Mills 480v 3ph pump, looks beefy
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[22:45:12] <JT-Shop> I should be spreading mud right now
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[22:49:25] <toastyde1th> power steering pumps
[22:49:28] <toastyde1th> esp for aluminum
[22:49:35] <toastyde1th> high pressure
[22:49:47] <toastyde1th> if you can't support enormous volume, pressure is next best
[22:49:57] <toastyde1th> plus you can use gun drills if you have a power steering pump
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[23:15:53] <Tom_itx> JT-Shop, is your vmc fully enclosed?
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[23:19:09] <JT-Shop> Tom_itx: mostly a few gaps on top
[23:19:53] <JT-Shop> http://www.petpeoplesplace.com/petstore/pet-image-large/bridgeport-discovery-308-cnc-machining-center-dx-32-cnc_250800154905.jpg
[23:19:58] <JT-Shop> not mine but close
[23:20:24] <JT-Shop> this one is mine http://gnipsel.com/shop/unload-308/unload-308.xhtml
[23:20:48] <Tom_itx> ahh yeah i remember that
[23:21:05] <Tom_itx> when you gonna shove it thru the shop door?
[23:43:43] <JT-Shop> soon I hope
[23:44:06] <Tom_itx> what control is that? is it like a boss10 or something?
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[23:51:44] <Tom_itx> well, before the suspicious looking retrofit that is..
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[23:52:52] <JT-Shop> DX32 control
[23:53:41] <JT-Shop> well I might have to sleep in the shop if I can't McGiver up the AC in the house tonight
[23:53:55] <JT-Shop> suspicious looking retrofit?
[23:54:24] <Tom_itx> you didn't add that monitor?