theorb is now known as theorbtwo
what does a "block processing time" of 9ms translate to in real world usage? (it's listed on a commercial cnc package)
what does a "block processing time" of 9ms translate to in real world usage? (it's listed on a commercial (linux) cnc package)
[01:03:12] <morfic> http://www.fagorautomation.com/_bin/productos.php?id_producto=2&id_nodo=6
8055 is linux based
[01:08:58] <tom3p> http://www.imakenews.com/gefanuc/e_article000735539.cfm?x=b11,0,w
block processing time, best kept secret ( told by another seller of cncs ymmv )
any linux tools to view 'step' files? (ISO 10303-21)
cool, varicad has a free deb for thier viewer ( i've lost my real varicad for linux on some dead HD years ago :(
nice link tom3p
seems gCad3D also imports STEP
figured it can't be too bad as 9ms is still over 110 blocks/s then. and we never ran out of speed until we switched our serial speed from 9600baud to 4800baud when driop feeding (we had some misreads while surfacing some hot core box for a pattern)
morfic more than you ever wanted to know about BPT
just weird how they all sell coprocessors "to close the position loop" on such prepackaged controls
try a contour with .010" segments and a high feed, somewhere all systems choke
in case you wonder why i babble about them, Fagor walked in today, quoting DROs for our manual lathes, and the business card mentioned servos and cnc controls, so they get to quote their control....
tom3p: yes, very short (often less than .010" i bet) segments is what flies by on the screen when we surface 3D contours in aluminum coreboxes
annoying to program too, not the roughing, but the finish passes are, um, mostly luck, hope the improvements they made in 2010 are turning out to be usefull, because i would love to have some control over what happens on what geometry
[01:57:39] <skunkworks> http://www.electronicsam.com/images/KandT/conversion/yaxis/tachencoder1.JPG
[01:57:47] <skunkworks> http://www.electronicsam.com/images/KandT/conversion/yaxis/tachencoder2.JPG
[01:57:53] <skunkworks> http://www.electronicsam.com/images/KandT/conversion/yaxis/tachencoder3.JPG
skunkworks: pic1: front focus
skunkworks: that's on that big machine that was in someone's basement?
someones basement? one heck of a basement. there is 3 feet of concrete under it ;)
[01:59:45] <skunkworks> http://www.electronicsam.com/images/KandT/DSCCurrent.JPG
was thinking of another machine, just recalled reading K&T on ML before
the cahin tool changer sounds familiar too
ah - ok. that was probably me.
anyone ever work with the Techno CNC Servo G-Code Interface? http://www.techno-isel.com/CNC_Routers/CNC_Interface.htm
NTU is now known as NTU_brb
could there be any problems with wireless keyboards?
Like a dead battery when you need to hit ESC, STOP, etc?
nope in signal "well-timing"
just to be sure
mk0: ask gamers :)
they are very picky about timings
btw beware that bluetooth keyboards may (theoreticaly) reattach to another bt master device
at least i had problems with headset which was taken away from pc by mobile phone :)
mk0: depends on how fine you need your timing?
i meant moving a machine with keyboard. that it won't lose smth (steps etc)
provided your machine is set right it would be fine
keyboard just sets the commanded position
EMC then tries to meet it
Valen: maybe he has ~1m/s jog speed and want to do precise positioning with kbd :)
if he has a 750M long mill then thats fine ;-P
SWPadnos_ is now known as SWPadnos
jthornton_ is now known as jthornton
jthornton_ is now known as jthornton
Hello All, I have a question with regards to the XYZ axis. What is the standard to determine positive and negative movement of a three axis mill? Should the Z axis increment or decrement when it moves towards the table? Should Y inc or dec as it moves away from the front and should X inc or dec as it moves from left to right?
[12:20:16] <archivist> http://www.cncexpo.com/Cartesian.aspx
Thanks archivist ... The right hand rule.... It's been a while since Ive used the mill as it has been in storage and I need to setup EMC once again!
and this is a page often cited for axis rules http://www.cnc-toolkit.com/support.html
a lot has improved in EMC the last few years, what version are you running
!wench learn right hand rule is http://www.cnc-toolkit.com/support.html
I have learnt right hand rule is http://www.cnc-toolkit.com/support.html
Ive just downloaded 2.4.... http://www.cnc-toolkit.com/support.html
I had to google for it!
archivist: how do you have the wench repeat it
right hand rule
[12:24:01] <the_wench> http://www.cnc-toolkit.com/support.html
or !tell jthornton about right hand rule
!tell jthornton about right hand rule
!tell jthornton about right hand rule
hmm must trim spaces
I hate it when one looses all there notes... Should of backed up computer!
cool, I thought you needed something to alert the wench to do it
[12:25:43] <the_wench> http://www.wench.archivist.info/index.php?chan=%23emc
to see any factoids (select channel if needed)
OK... If looking from the front of the machine. When I home the X and Y it homes to the back right corner of the table then zeros all movements are negative. is this correct?
Ignore that last message as I need to comfirm that on second thought!
jthornton_ is now known as jthornton
Jymmm: umm - rememeber the music video that I posted yesterday? florence and the machine? Same http://www.youtube.com/watch?v=1SmxVCM39j4
'a kiss with a fist is better than none' how true.
I have a KISS with a CNC'ed Delrin head
skunkworks: Better http://www.youtube.com/watch?v=7nxO-yPQesA
saw that one too
[#emc] "This is the #emc channel - talk related to the Enhanced Machine Controller and general machining. Website: http://www.linuxcnc.org/,
wiki at http://wiki.linuxcnc.org/"
I did something? you must have me confused with someone else
can i use MESA 7I43 inplace of 5I20 or 5i22
yes, but you will have less I/O (2 headers instead of 3 or 4), and you won't be able to run the servo loop as fast (~2 kHz vs ~10 kHz)
There ya go, somethign else that can go on the about to be deleted wikipedia page: controller interfaces: parallel, mesa, jon's card, etc
if neither of those matter, then they're more or less interchangeable
does it affect accuracy or speed??
mill, lathe, laser, router.
does EMC only support the parallel port interface on the 7i43?
yes, though someone recently said they had it working with USB
(on the mailing list)
yes JT-Work, coz 7I43 is USB/LPT and u cant use USB in realtime.. AFAIK
Oh, new section to be added to wikipedia: COMPONENTS: HAL, etc
that's what I thought
SWPadnos can y ou give me the link for INI and HAL files
I don't have any special links for ini or HAL files for Mesa stuff. everything I know is on the wiki or in the packages
just open up the correct config for that card
to broach something you just use some tapping fluid on the cutter?
[15:10:44] <Jymmm> http://en.wikipedia.org/wiki/Broaching_(metalworking)#Process
there you go
heh... that article is by the guy what wants to delete the entry?
EMC has a reference now :) http://en.wikipedia.org/wiki/Enhanced_Machine_Controller
and someone has been editing that page :)
atmega: no, delete request was placed by Wizard... and page was created by ichudov
oh, the broaching article was the first one listed under his name
how do you know it was marked for deletion?
cause it says so in the big box at the top
at the top
oh - says at the top
considered for though, not marked for
so go comment for keeping on http://en.wikipedia.org/wiki/Wikipedia:Articles_for_deletion/Log/2010_September_29#Enhanced_Machine_Controller
that Wizard has 5 (yes count them ) 5 Barnstars!
no, not barnstars... that is impossible! I only have 2 shedstars :( Lucky guy.
I had a tentstar, but they took it back
JT-Work: some references are here http://en.cnki.com.cn/Article_en/CJFDTOTAL-ZJYC200802046.htm
psha: you can add them too
JT-Work: i'm a bit ill now to find what are good enough to include in the page :)
heh I think I might know who he is
who is that?
I may have recommended EMC to be used instead of a windows based app that he was trying to get working on a strapping machine
small world sometimes
ah a bias detected?
JT-Work: added this link, others are availbe through it
might be ;) pretty strong coincidence if it's not him
JT-Work: to chinese journal
nope was not me
I've added :)
* JT-Work is listening to My God atm
she talks to you?
thick as a brick?
bungle in the jungle?
* skunkworks liks Jethro Tull also.
* JT-Work is getting kinda good at writing g code by hand :) now
JT - Jethro Tull coincidence or ?? ;-)
For some reason they don't play enough Jethro Tull on the local radio stations much any longer .... I don't get that...
everthing is shifting. now the 80's are considered classic rock :)
No way ..... not possible ... I reject that notion .....
* skunkworks likes the 80's also
I resemble that remark
I like all music... some noise I don't consider music
I agree with that ..
1980's!! Jethro Tull dates from 1967 !! you are older
heh, I got my first motorcycle in 1968
had to use a dog sled before that
about when I got my first job :) TV and radio repair apprentice
my first real job was a service station attendant
£4 a weeks wages and mother wanted most of it!!
I kept getting fired when they found out I was under age to be hired lol
$1.75 per hour was the minimum wage back then
I got thrown out at Rolls Royce for being under age too, the co I was at asked if I wanted to do some contract wiring there.
must be 18+ to be on RR site
* JT-Work heads to the other shop now
hrm, emc wikipedia article is now suggested for deletion...
I guess there are wikipedia-police who patrol the new pages and kill everything that doesn't look "good"
for some definition of "good"
[17:13:12] <awallin> http://en.wikipedia.org/wiki/Wikipedia:Articles_for_deletion/Enhanced_Machine_Controller
is this still available somewhere: http://cvs.linuxcnc.org/cvs/emc/doc/segmentqueue.pdf
how can that guy say it is an unremarkable software package?
perhaps he is really an ArtSoft person
just a wikipedia police I think...
you see the list of article to be deleted?
[17:50:24] <elmo40> http://en.wikipedia.org/wiki/Wikipedia:WikiProject_Deletion_sorting/Software
emc is top of the list
this one has todays deletions: http://en.wikipedia.org/wiki/Wikipedia:Articles_for_deletion/Log/2010_September_29
mostly pages for persons
awallin: the cvs is still at sourceforge
and there is a git import of emc1 cvs somewhere
alex_joni: ok, I found the segmentqueue thesis, but it does not mention EMC. I remember there was a book chapter, but was it ever implemented/tested on EMC or EMC2?
it was in emc1, but afaik never worked right
thanks, I found the book chapter also on /doc over there
anyone know what book that is?
this one: http://emc.cvs.sourceforge.net/viewvc/emc/emc/doc/segmentqueue.pdf?view=log
this is a lead: http://www.rogierblom.nl/research/Short_bio.html
apparently the Blom paper should be something like "Design and development of a real time trajectory planner for the Enhanced Machine Controller" but I can't find it on the interwebs...
references section is coming along nicely..keep it up :)
that WIzard191 guy who says EMC2 should be removed claims to have a BS in Mechanical Engineering.
anyone see his bio?
..."working on top secret strapping machines."
top secret strapping machines?
what a loser
nuclear strapping machines?
those went out with the cold war
Come on, the article sucks. Quit bitching about who/what wants it deleted and fix the damn thing! I'd delete it too with only 2 paragraphs.
That's ANY article
has it been up a week yet?
one day I think
ya think he jumped the gun just a bit on wanting to delete it?
Well, I think wiipedia expects a full edition, not a rough draft.
then they are too dam picky lol
talking about wikipedia reminds me of something I need to do..
[18:49:16] <WalterN> http://en.wikipedia.org/wiki/Sieve_of_Eratosthenes
the first part is just false
"It works efficiently for the smaller primes (below 10 million)."
I wrote a little program that is very effecient and goes up to 1,000,000,000 using that algorithm
10billion it starts to use lots of memory
I've been adding references to the emc wikipedia page. What appears to have happened is that something developed by NIST, and maybe GM, in the 1990s is now being widely used in aisa and the eastern block countries for research and development. I guess those countries should than the US taxpayers :)
NIST developed it, and used machines (a K&T, IIRC) at GM for testing
they (NIST) also did some stuff for the navy, with cable-operated platforms (think ship-painting)
has anyone booted 6.06-based EMC on an atom board
SWPadnos: it seems GM and K&T and the Navy have been very quiet about this - the interwebs do not contain a lot of pdf about these things
I don't think there's a lot of information anywhere other than the original NIST pages (hopefully still archived somewhere at NIST) and the linuxcnc.org pages (and their histories)
there have been several articles in "Home Shop Machinist" / "Digital Machinist" that mention EMC/EMC2
there are some users groups/forums that have been relatively active in the past. I think Alex is on one in Germany from time to time
and loads of mentions on the likes of cnczone
awallin: search for robocrane
a lot of references pop up
now robocrane is a project by it's own, but it's based on emc
the Chinese do surprising things, for example: http://en.cnki.com.cn/Article_en/CJFDTOTAL-SDJI200905037.htm
awallin: that's quite a reference list
yeah, I knew about roughly 3-5 of those before I started digging.
although with some of the new chinese stuff you can not tell how much original research they are doing, or if they are just copying someone else
awallin: there are lot of articles in chineese journals, i've posted only one link but there are many
anyway in the academic world EMC and/or EMC2 does seem to have been adopted and can't really be claimed to insignificant if there are 20 papers using it
I wonder what this is: http://www.springerlink.com/content/7376406nx011415k/
* archivist votes strong keep :)
awallin: i'll try tomorrow to fetch this article
ok, let us know if you find something interesting
we have some subscriptions at work but don't know if this one is included
it's called "Lin-soft CNC"
does it really exist, or just someone's research project?
Sichuan University, paper from 2008, looks like they took EMC2 and tried to improve on parts of it
there's a lot of this stuff from China where they reinvent themselves stuff that others have done (or so it seems, maybe I'm just skeptical) http://www.scientific.net/KEM.392-394.482
wow someone has been busy on the wikipedia
someone use halui.tool.length-offset pins?
psha: why you asking?
there is typo in halui
they are length_offset
also there were some messed
psha: patches please or something
[20:09:59] <awallin> http://en.cnki.com.cn/Article_en/CJFDTOTAL-ZHJC201002013.htm
it's just shocking....
ofcourse none of this chinese stuff is actually downloadable as pdf
Hello All, Am I right in thinking a G70 / G71 is the same as a G20 / G21 Inch and MM? Trying to setup a postprocessor output.
no 70 or 71 here: http://linuxcnc.org/docs/html/gcode.html
It appears that EMC2 does not use the G70 / G71 but it appears to be the same as a G20 / G21 according to this http://nilno.com/cnc/gcodes.html
WOW! my Glacern vise is due in tomorrow :)
man, not having a spindle speed override makes it hard to dial in your program
why don't you have a spindle speed overrride?
or is this the bridgeport?\
yea, the BP Discovery
I'm cutting some A36 with a pos triangle insert 1.5 diameter cutter and it sucks
I'm going to try 125 SFM on the next cut
at least the drilling op went fine
as soon as the first belch comes out it is converted!
125 SFM does sound better with that pos face mill
0.001 per tooth for a triangle insert should be ok???
* JT-Hardinge starts to wonder why the MIL is not home yet from her volunteer work at the food bank...
ah there she is, she must have went to the store after the FB
Is anyone here familiar with lasers?
Specifically, really, really big ones?
used to run a 1kw one.
Can you tell me anything about this monstrosity?
[23:09:05] <spasticteapot> http://www.laserresale.com/?fa=app.view&it=5404
It's 25 years old and honestly looks like it was assembled in the 60s...but it's 750 watts for four thousand!
heh - not much I can tell you
Do you have a shark to tie it to the head of?
skunkworks: I'm not entirely sure of what on earth it even is.
750 watt is pretty small for a "really, really big one"
alex_joni: I suspect that's why it's only $4,000.