theorb is now known as theorbtwo
JT-Hardinge: Since they have a "lift" to them, the design may not be a bad idea. Could also position your bucket with them =)
Does anyone here know anything about wiring up a (physical) control panel using Python to talk with HAL? I've been digging through tutorials and manuals for a couple evenings now, and while I understand lots of pieces, I am having a hard time seeing how to put the stack together.
what do you guys think of this for our mill as a Mk0 plan http://www.vapourforge.com/mill/zone/vapourmill_mk0/5axis%20front3.jpg
more pics at http://www.vapourforge.com/mill/zone/vapourmill_mk0/
ckingsbury: the key to your problem is halui
cradek: thanks, that's what I thought, I'm stumbling a little closer to it
Where I was banging my head against the wall was in figuring out how halui gets loaded to start with, and I was going through an axis-pyvcp tutorial and that kind of started to come into view
[02:32:51] <cradek> http://linuxcnc.org/docs/html/gui_halui.html
"The easiest way to add halui is ..."
I wish we could tell google that the most up-to-date docs are at http://linuxcnc.org/docs/html/
can you add a link to the old docs saying "legacy stuff" look here for the new stuff?
jepler did some of that recently
OK, I've got all my pieces in place now, but EMC is failing to load and I'm getting a message saying ard2 (that's my Python script) exited without becoming ready
All I'm doing is creating single component with a few pins
and I am calling the ready method
anybody out there?
73 is ok ?
73 is ok for what?
I have emc2 questions
anybody using pitch compensation? does it work?
yes screw compensation does work
i have a machine with an acramatic 2100 that uses " tool id numbers" as an option to tool pocket numbers, kind of like migratiting tools
I can call a spot drill id 200500 and it will locater the pocket in the tool file where it is
and load it from there
instead of blindly loading whatever is in pocket 1 for instance
emc2 can have arbitrary tool numbers; T200500 is perfectly acceptable
it supports machines that always return the tool to the same pocket, and also machines that exchange a pocket tool with the spindle tool (the latter is called a "random" toolchanger)
cradek, I always heard that referred to as migrating tools, common on the larger twin arm changers with large magazines
where it takes too dang long to index the chain twice
yes a swing arm that holds a tool at both ends and rotates 180 to swap them is the common "random" setup
how about renishaw probes? anybody use them in emc?
I have a MP12 spindle probe and a tp21 tool probe
yes, we have powerful probing gcodes, I have a renishaw that I love and use constantly
are you happy with your emc retro?
with a tool probe you could write gcode that loads all your tools and probes their lengths and puts the length in the tool table
I have emc2 on several machines - they work great
The acramatic 2100's were great the first 7 years, not so great the last 3 and are strarting to really suck on part prices
some day I will set up a tool probe...
how many machines? are they identical?
I have some fanuc 16's and 18i's
cradek: we are making one ;->
the mills I am looking at emc for
are all cincinati verticals
1 750, 2-1250's, 1-1500
biggest is 30inch y x 60 inch x x 30 inch z
where are you?
theres even some videos ;->
make lots of stuff, including firearms
which end? I'm in lincoln.
southeast, 1 hour south of davenport
heh, the far end
iowa is wide...
3.5 if you drive like me
anyway, the cinci's all use the same application software levels
load all the same stuff to make them work regardless of size
was talking with mesa today
probably go with them on boards
you will learn a lot on the first one - the next ones will be easier
you guys lasered your machines? comp fanuc like?
the next ones will be cake - identical ladders
I haven't but stuart s in wichita has lasered all his emc machines
so it all works
several of us are going to be down there in november - you should come if you want to see real emc machines
have heard nasdty rumors on camsoft retrofits
heh, you asked that already
and mach3 has a problem with pitch comp I hear
mach 3 is for machines where they don't care about that kind of thing
I just don't want to put a lot of work into it and find I'll never be happy
If i could afford to put an 18i on them I probably would not even consider emc... that happy with my fanucs
none of us are in the business of promising happiness - it is important to do your homework - I see that is what you are doing
but a fanuc retro can't reuse existing motors and drives
and fanuc priced me about $45k to get just the parts to do these machines
how many of you are using classic ladder inside of emc2?
I used classicladder for all machine logic on my vmc
I love ladder behind fanuc's so much easier to troubleshoot
running the tool changer, interlocks, probe, estop, everything
subprogram? how many layers?
we have an "O word" dialect for looping/subroutines/conditionals
I bet it's quite incompatible with however fanuc does it
but, same ideas
how about macro? can I program with variable? for example:
thats fanuc like so far
the 2100 is way different but not bad in macro
yes that part is a lot like fanuc
how about absolute encoders? I have incrementals on the cinci's now, ut if I ever spend the money I'd rather go absolute
thats a lot of cash to change
there is no support for absolute encoders.
these are 30nm continuous motors, 50 nm peak
normal incremental encoders with index pulse homing
but the newer digitals or older analogs both work?
the mesa hardware takes differential quadrature + index encoder signals.
if you have resolvers there are several good options, but quadrature encoders are the usual setup.
is there much point to an absolute encoder on a screw?
depends if your home switches are in good shape
Valen: you don't have to home...
you can get grid shift
re homemachine and the home moves a screw pitch
well... not unless it's badly set up
yeah, or busted
you would still need a home but it doesn't need to be accurate
or if the switches are 15 years old....
ha mine are more like 30
you would need to know what rotation its in one would presume
valen, you need home to be accurate....and repeatable especially on traveling column machines
or toolchange does not work
Valen: you just put the switch where it triggers midway between two index pulses
i have hmc's 2 pallet, have to nut home position
they are absolutes
cradek: so theres no real advantage over an index
well my home switch for z is not bad, x I can deal with y home switch is somewhere I don't care to be often
Valen: not for machines that can always just home, IMO
but say your machine is huge - might be nice to avoid traveling to one end and back whenever you start up
willeo6709: i was saying with an absolute encoder you don't need an accurate home switch, the switch just needs to let you know what rotation of the screw your in (IE are you at 0 or 5mm doen the way)
cradek: if you trust that saved and actual positions are pretty close ;->
valen, on my fanucs there are no switches,,, find mechanical home, do a parameter thing, done
it just drives into the wall?
goodnight folks, I've got to run.
no, you never have to home it once established,,,, you tell it when its home
take a look at our tool length switch ;->
willeo6709: seriously, consider the wichita emc fest in november if you're interested in doing some big retrofits.
see the emc-users mailing list archives for details
is here or the forum the best place for help if i encounter issues?
depends on how big an issue your having
I normally come here first, then the mailing list
willeo6709: Speaking of Wichita, I looked up louisacomm.net, are you in Iowa?
wichita i think is 5-6 hours
I live in Omaha, but have been spending a lot of time in NW Minneapolis lately. I usually take the "via Des Moines" route, I-80 to I-35, or vice-versa.
been a while since I was in omaha...
fastest for me to zip up to 80 and across
Anyway, I'd like to go to Wichita, but nothing for sure yet. Oh, I also visit Minden, IA from time to time.
heard of minden,,, can't place it without a mapquest search
It's just south off of I-80, about a mile or two east of the I-80 & I-680 fork/merge. About 45 mins east of Omaha.
have emc stuff?
No machines of my own, but I help friends in Minneapolis and Minden. I'm trying to learn enough to become a developer, we'll see, lol.
i have 4 cincinnati vmc's from the late 1990's i would like to retrofit
I did retrofitting (among other things) in the past, so that helps.
Sure, go for it!
been to hell and back with the windows based control on them
is properly built linux more stable than windows?
Is it the one that we sometimes refer to around here as M*** ?
its an acramatic 2100
now a siemens product
but started life at cinci's Vickers systems division
Ah, OK, another product trying to use Windows for real-time. Yikes. Yes, in fact just about any version of Linux you can shake a stick at is more stable than Windows.
these are win nt 3.51 or 4.0
heres a new mill we are working on http://www.cnczone.com/forums/showthread.php?p=827626#post827626
have one 3.51 drive left
Well, that's something, at least. Still not really any good, though.
looks like we will order drives/servos/motor next week, finally some movement :)
Even NT Windows is still Windows.
valen, don't spend much time on the zone.... i am a mod on practical machinist
practical machinist is a place i never thought of looking for a forum
it's those little magazines laying around in the break room, not a forum :P
morfic what do you think of the outline for our machine?
did not lok too bad valen
i would probably want to know what you want to do with it, and maybe point at the rails
but i saw a trunion and stopped looking more or less, i'd want it either way, just because
hoping to get to doing steel with a 2Kw spindle
the 4th and 5th axies are to be removable
willeo6709: Good to meet you, maybe I can tour your machines sometime if you're not too far away from I-80, I-29, or Hwy 34?
wiskey tango foxtrot was that?
this thing knock you out and log you back in occasionally?
Not that I know of, did your IRC client do that, perhaps?
Unless freenode does that for guest12345 names? You get to upgrade to "guest" if you're the only one?
I really don't know.
my laptop keeps reconnecting like that, it can only be my local wifi connection because this machine and the emc one are stable
Anyway, willeo, jump in and chat anytime. But right now I need food and sleep. If you write anything, I'll scroll back later and read it. I'll be back tomorrow. Goodnight all.
Valen nice looking machine, but do you think that trunnion could use a counterweight on the A?
not a bad idea that one MattyMatt
we are mainly focussing on the 3 axis at the moment
but want to be able to go to 5
or a place to attach one temporarily, if the work doesn't do the job :)
most of the commercial ones don't seem to have them?
the ones I've seen have larger A bearings, usually similar in size to the 5th axis table
yeah I just didn't want to punch too big a hole in the side wall
maybe that's just a hangover from their development from vertical rotaries used as 4th axis
don't know where you are but I know where 5 or 6 bt40 5 axis machines are with fanucs if you want a real steel cutting machine
not expensive either
define not expensive ;->
I'm in australia btw
20k or less
i am in the midwest usa
20 kopeks? I'll have one :)
yah I'm hoping to knock this out for < $5k
iirc they have about a 16 inch table, round
its a serious toy ;->
not a serious machine for heavy duty 24/7 work
my 4th axis is a nema17 clamped in a $10 drill vice :)
the good news is, it works
hey thats all that matters
kinda. even delrin is a challenge for my plywood mill. It's a good job I didn't try and make aluminium or brass gears this time round
heh probably still make archivist jelous
yours might, mine makes nobody jealous except maybe a few reprap users
for my 4th I might be going a little overkill... but I have the guts of a tire changer :P They use a worm gear to drive the main rotation of the machine. There is a little bit of play but I think if I open it up I could tighten it with a bushing or two. Now how do I drive it?
a ruler and an exacto makes reprap people jealous doesnt it?
willeo: how old? for $20k I would hope less then 10 years.
1996 or so
japanese built ntc's
linear, ballscrews, nikken rotaries
16" rotaries are dirt cheap on ebay. generally cheaper than 6" ones
until you go an a over b both servo controlled by a fanuc 21
Valen: nice 5-axis setup. this is how Mazak does it.
now, incorporate an automatic tool changer!
elmo40: oh that is a must ;->
where to put what style is the question
keeping in mind its gotta be small in terms of table space
it looks like you've got room at the front, if your Y rails are bit longer
question: lets say I want to make a tool changer. but not in the area of the machine. keep the tools chip-free. this would require the tools to be 'behind' the home and/or soft limit switch only accessible from a specific location. Is this possible? can there be an override for tool changing in a specific location where the machine goes a few inches 'behind' the home switch so it can reach the tools behind the door?
MattyMatt: typical mistake. putting the tools in the work area
MattyMatt: I wanted to put a "boom" across the front to join the top corners togteher
why would you want to have chips/coolant flying onto the taper?
I spose you could put a carousel changer under the table
'real' machines put the tools behind a door. out of site from the work area to help keep them clean
yeah I like those ones with the tool rack in a little cubbyhole that comes out and opens up for tool changing
Valen: a what what? where?? under???
the spinny ones
I get that carousel idea, sounds neat
under the table?
what table? the 5th-axis table?
yeah a trapdoor under the bed
the big flat bit
why not place tools underneath the table... empty space, eh? :P
I was going to put it off the side of the bed
increase the range a little so it can reach outside the base
but I must say, that design is virtually identical to the Mazaks we run.
will you cast any of it?
under the bed just needs some extra Z, which doesn't increase the floorspace of the machine
it's not a benchtop machine anymore if you do that tho
going to fill it with EG
i'm trying to find a foundry to see what casting stuff costs
MattyMatt: put some feet on it and some drawers ;->
don't you have a back yard? ;) melt your own.
melting iron is getting a bit warm
it looks doable. I was hoping to get as far as melting alu this summer, I've blown that chance
doable but might not be easy
have you read Lionel Olliver's site?
[05:29:22] <MattyMatt> http://www.backyardmetalcasting.com/index.html
you have to read the whole site, to get the chronological gist of which burners & furnaces were most effective, but he was melting iron quite easily at the end, all on waste oil
geez nobody does iron work here it seems
its all non ferrous
bunch of pussies
ya, tell me about it
I worked in an iron foundry a while back, we made exhaust manifolds for gm/ford/chrylser.
I drove by there a few months back and the building was torn down.
would have been nice to grab some of the sand ;)
Valen: what are the machine specs? rotary table size? spindle taper? Hp of spindle?
500mmx500 working area for 3 axis
there's actually a one man iron foundry here in town. I ought to go and get prices and maximum melt size
its a first draft but the hope is to be under $5000
until not so long ago, we had a firm here making 20ft bronze ship propellers
for a turn key system
oh neat, the head office is still here, http://www.smpropulsion.com/.
production looks like it's shifted to Hong Kong
Valen, you could make your 4th axis from 2 big rotaries, and that would take care of most of the structure of the sides of the machine. they wouldn't be in the way when the 5th axis is removed
ries_ is now known as ries
brand new large rotaries are probably expensive tho
but old ones are crazy cheap on ebay
at least they are here in the ex-industrial nations :)
yeah no enormous old ones on ebay.com.au
stuff like this goes for 20 quid sometimes here http://cgi.ebay.co.uk/16-T-Slotted-Rotary-Table-/180488423397
I've noticed the bargains have been drying up since I started looking just about a year ago
yeah, we are just putting 100mm holes in the sides at the moment
so you should be able to fit in however your doing it with / through that
Does anyone know of any nesting programs/scripts?
I think I've seen free ones intended for texture packing
in 3d programs, you need to pack arbitrary textures into rectangular bitmaps
so it's essentially the same problem
No, this is nesting pieces in a DXF file for cutting out on sheets without wasting material.
yeah the material you are preserving in textures is video memory
imagine animal hide shapes
I have no clue what "packing textures" is
he is talking about doing video card stuff
it could be repopursed for what your trying to do
I am somewhat curious to find out too
[07:42:37] <MattyMatt> http://alice.loria.fr/publications/papers/2002/lscm//photo/bunny_2d.png
that sort of thing
MattyMatt: Ok, link to software or script?
[07:43:31] <MattyMatt> http://alice.loria.fr/index.php/publications.html?Paper=lscm@2002
there's the paper
MattyMatt: I asked for software or script
I'm having a quick scour of the usual places for free implementations. google is just throwing up papers
it looks like a basic implementation is built into blender
but I expect that'd be a big job importing DXF, converting to texture, doing the LSCM on it, and re-exporting
I expect you want somthing that works in proper dimensions, not pixels
are you interested in $99 class apps? I've seen those for sure
cradek: jepler Is this useful ? http://www.koders.com/python/fid173EFCC89B700DDF770FEE4C2DDCDBC09D18395F.aspx?s=xml
there's a utility in the DX SDK called UVatlas.exe
[07:56:42] <MattyMatt> http://msdn.microsoft.com/en-us/library/bb206321(VS.85).aspx
specifically for routing tho, I've only seen it as a premium feature of certain commercial CAM progs
anyone have any ideas what I could try about libcrypto.so sag fault 10.04 live cd
/msg NickServ identify wellsindex
Als: that was a bad moove lol
odd. never had that issue. find many people with libcrypto.so issues, though.
i suggest changing your password rapidly
dont hit the space bar!
ok, this would be a cool job but DAMN. http://www.iviewtube.com/v/167824/climbing-up-the-tallest-antenna-tower-1,768-feet
[16:12:13] <Birdman3131> http://www.42isalwaystheanswer.com/photos/cncboard/
Help. Our CNC machines are overheating and I cannot figure out why.
a bit more light and the camera on a tripod or a steadier might help with the pics...
Anyone here use a Vacuum pump for hold down?
Been wondering if it could be done with small pods
Or better yet
I do allot of styrofoam cutting
what was that?
Had to speak to someone in my office.
I cut allot of styrofoam
(Pink Insuklating Foam)
for low budget prop projects
Right now i am fasting the stuff to my table via wood screws into my spoil board
I have a 2700 CFM Delta Dust Collector
Not saying it has allow of vacuum
But it seems i might turn my spoil board into a air hockey table,
I'd suggest you try it and report back with results.
awallin: Sorry. They were with a camera phone right before I cleaned them.
Does anyone cut Foam?
I sometimes cut cheese. Does that help?
Here is my problem
I cut .5" thick foam
The problem i have is
the foam lifting up
I have seen something like a
"Presser Foot" on a sewing machine
that presses down on the material
what are you cutting the foam with?
You said you have a dust collector?
Make a vacuum table
I'm beginning to think of it.
then just use a gate to control the suck level
Wouldnt i want full sucktion?
This is EPS your cutting right?
i don't know
(in ordinary condition, i cut foam with a hotwire)
not little pellets
Ok, but it "snaps" when bent?
It has some flex
ITs not like sign foam
flexible a bit like piper insulation
Yeah, you dont want to deform the material, vacuum is far stronger than compressed air.
So, turn my table into a vac table
I have seen 5000 gallon stainless steel tank buckle under vacuum.
using some of the vacuum on of the dust collector
I have seen 5000 gallon stainless steel tank buckle under vacuum. And more than once too
hi all from Germany
hi, i want to experiment a bit with my usb joystick and emc2.4.4. i found different joystick related wiki pages but on all hal_joystick is used and the header says that hal_joystick is deprecated for emc 2.4. so where can i find more actual information for experimenting? :)
go to wiki and there to hal section
ok i will check
ah i see. hal_input is my new friend :)
heh najs .. brother makes cnc machiens also ? :)
mrsunshine: one of the fastest! check out this tool change. http://www.youtube.com/watch?v=4XYakTeQahA
cheap and good printers and cnc machines .. its quite a contrast imo :P
this one is better. http://www.youtube.com/watch?v=L5aC5Kpvibc
think of the CNC as a printer... just removing 'ink' instead of adding. LOL
just like magic, now u see, now you don't
elmo40, yes .. but the size differs quite a bit :P
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[22:02:46] <skunkworks> http://cgi.ebay.com/Bryant-Processor-PCB-CNC-2K-9124-Circuit-Board-2K9124-/140352608146?pt=LH_DefaultDomain_0&hash=item20adaad792