[00:00:18] <anonimasu> http://imagebin.org/17060
K`zan_emc: you missed the part I just posted :P
[00:06:51] <anonimasu> http://imagebin.org/17060
Looks promising, board came up, steppers are locked and I can hear the chopper :-)!
anonimasu: Checking now.
Very cool, what is it?
it's a ramp for orienting something with a inductive sensor
Being able to easily machine curves and circles is going to be wonderful!
Going to run the config thing again and see if I got a clue about any of it :).
the cutouts are there to make it cute :)
Yep, I'm sure impressed :)!
cant help them :)
im a fan of cute things ^_^
the cbore base looks thin, ist it?
the stock underneath the counter bore
my fea program tells me that
(I'm just kidding)
I purchased it at work, and im really happy with it
it has _some_ bugs, but price/performace vs solidworks it wins.
i can see the cam like curve
* anonimasu nods
I love thoose sensors
they are cute
baumer sells equvivalent
but I havent had a chance to talk to them about prices
Cool, all axis work!
good goin !
I just hope this part cuts well enough
Probably will need to adjust stuff, but, they move :).
(I'm pondering tweaking the countersink depth
no wait, they are 10mm actually
running 1/2 step (2), not sure if I want or need 1/4 step or not.... Time will tell.
its a ramp that touches a Hall field, not much pressure ;)
but for machining
need to fixture them
Daisy has a bad char :-(.
lotsa pepple used daisy
Loaded Daisy out of the examples folder and it puked.
Lemme load it again.
line & msg ?
maybe it has axis that you dont have ?
"Near line 24 of .../daisy.ngc: Bad character 'a' used.
got an a axis?
tomp: I found a neat trick with indictive sensors, use a magnet behind what you are detecting(rpm detection)
Ah, probably refering to A axis...
Yes, have one, not hooked up or configured.
Understand now :).
anonimasu: ? i need to play with that
no wait, the sensors I have might be hall.
I cant remember..
they sense metal, but when you add a magnet you get 3 times the sensing distance
no wait.. more like 10..
Manual control only for that one... trying another...
i built a prox sensor in college for architecture 101. we had to build a random system. i put it in a soup can and had it hooked to a siren. i just watched the people try to figure where the random was :-)
they'd asy 'nothing moves' as they waved at it
i was evil
not as evil as the people that put a loaded cap in the dining room :p
Steppers are toasty...
did you kill them?
No just quite warm
its normal to run hot ( unless spcl amps with current reduction at idle )
* anonimasu nods
almost burn isnt even bad, but stinky IS bad
~115F according to the IR temp gun...
it's a new baby, you gotta watch it
Seems they should be OK, will have some heat sinking once I get them on the machine - right now just sitting on a board :)
Running snowflake - Neat!
* K`zan_emc VERY please and VERY VERY apreciative of the whole EMC crowd!
tomp: Heh, could be called that. Max temp on the steppers was 117F on Y. Not bad.
So, now I get to start screwing together the Pipe Dream :).
they cool when bolted to the machine
very cool, watcha plan on doing with the machine?
If the ammeter on the power supply is accurate, only pulling about an amp. I'm sure peak is higher...
K`zan_emc: why so critical of google? it works very well for me
if it reads across a shunt, you can dbl check with a voltmeter, it'll be rated n millivots per ampere
(the new spelling substitution is annoying though)
Only about 60 in/oz steppers (1.6A)
fenn: search is sucky and I get tired of having to page through 10 pages of advertising related finds to get to anything useful (if).
use more terms
if it's not on the first page, your search query is wrong
I do :)
manually flipping through search results is a bad strategy
Then it wants to remove the quotes and push all the advertisments....
It just gets more useless by the day ;-/.
add keywords like datasheet, download, ....
You wouldn't want to know how many keywords I try and try to combine...
search for AXIS the emc 2 front end ;) ( puns dont search well )
If it wasn't for the heavy advertising and paid placement crap, I'd have a lot fewer bitches :)
there is no paid placement
that's the whole point
Stuff for sale leads useful information by a LOT... No paid placement my arse...
that's probably because of unscrupulous spamming/"Search engine optimization" firms
you just have to learn how to filter them out
Whatever, it sure doesn't make my life easier.
there is a lot of seo crap sites but I learn to avoid clicking on them
I do my best too :-)!
when the revolutions comes it's gonna spammers THEN lawyers up against the wall
I'll pay for the ammo :-)
can I do the shooting
Lawyers first, they help empower the spammers.
There will be PLENTY for everyone :-) when the time comes.
my shotgun didnt discriminate
with no capitalist commerce there'd be no incentive for spamming
No, if there were ethics, there would be no spamming. Perhaps greed is another point...
(except for religious zealots)
K`zan_emc: spammers have ethics, just not the same ethics as you or me
Reasonably and rational ethics, what they do is NOT ethics...
have you ever tried to publicize something? its very hard to know when you're spamming. i think it's some kind of biological cognitive bias
Lack of morality too, anything, abuse anyone for a buck.
136F on the y doing the 3D tux...
put a cpu fan on it
Not going to run it anymore until I get it on the pipe dream...
* fenn grumbles about steppers and simple electronics
it will still be hot
WOnder if 2 12V cpu fans in series would run off a 24V supply...
isnt that a 34V supply though?
:-) :-) :-), cool, got two in the drawer here I have been saving forver, was going to order a 24V one but if those work - 2 is better than 1 :)!
24V for the fan.
Just checked it, there is a 24V regulator on the board.
Gonna have to dig for the fans, they are a long way down LOL!
145F at end !
Neato, time to turn it off and go get some FOOD!
got some good output from gcnccam. 2 buggers left. I drew inch dxf but get G21. And several G0Z0's that i dont want. Otherwise. a very nice 1st release :) http://imagebin.org/17066
the qcad src pic http://imagebin.org/17067
the layers are aligned to tools and emc2 gcode is created http://imagebin.org/17068
the resulting .ngc http://pastebin.ca/998089
you'll need to make sure your tool table file in EMC2/AXIS agrees with tool info in gcnccam, and possibly re-run EMC-AXIS after any edits. ( i dont know how to get the tool table changes effective without re-running )
and unused layers (say outlines ) should be removed, there's an icon for that on the 'properties' tab ( aka layer tab ). after you've selected a layer ( dbl clk it) you can exterminate it with the icon (dalek talk :)
If anyone is interested, latest progress pix: http://wrlabs.shacknet.nu/~vw/MyMachineShop/PipeDreamMill-WIP2/
nice shiny soldering, and no goopy white grease thumbprints :) looks good !
tomp: Well, close anyway. Thanks :-).
[06:33:19] <tomp> http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?GCncCam
Thats a sign I should get in bed..
oh I havent slept for very long
Were ya at? I'm east coast US
I should design a tool for making keyways
somebody is awake and alive
It has been quite a while since I have been here
I just upgraded my box to 804
how do you like it so far?
I am running EMC simulated
It has been an easy upgrade - I like it
It's nice for a desktop, I've been using the beta version for a few weeks now
hopefully we will also find that it makes a reliable basis for emc
In some things I am chicken - I waited
It will be reliable
I recently (early april) got a new laptop, didn't see any reason to install dapper or gutsy on it
stustev: it's not so much about the ubuntu reliable part
The EMC2 reliable part?
stustev: the RTAI part
stustev: how is cinci-stuart?
It is at the same point as the you-tube video. I wasn't able to work on it this week. BUMMER
everything always takes longer than we hope, doesn't it
but the video looked great. I like the tilted drilling motion.
yes I that is nice
I want to show the program at the same time as the motion so people can see how simple the program is.
it looks like the B axis is arranged so the built-in pivot length is short, like I did on my little machine. I hadn't noticed that before.
unfortunately it's not trivial to improve the 5-axis preview plot or backplot, or I'd have done it already
the pivot length is 5.25 inches. The lever to tilt A and B is very long.
jepler: I looked for a reference I could modify to allow the cone to tilt in the 5th axis.
It is no big deal except it is neat for demos
I am still working on simple, dumb amplifier for the servos
are the existing ones no good?
everyone wants to have either tach or encoder feedback to the amp. It is almost impossible to convince anyone that the amp feedback is not necessary
velocity mode amps with tachs are very nice, but it seems true you can do without if you have lots of encoder resolution
The existing ones are SCR driven. They work. The tuning is difficult. I am just modifying the existing accel and decel the SCR amps have. The SCR amps have pots on them. There are eleven pots on one amp and twelve pots on four amps.
I haven't touched any pots yet. Tuning with EMC is what is modifying the existing accel and decel.
That is why I want a dumb amp.
was someone on the list finding the amp manuals for you?
Yes, but I already had those. It tells how to adjust the pots - using equipment not available.
I bet Jon E could make a larger amp for you. But he may not be able to sell enough to make it worth the development.
Yes - there is probable not a large need for a 3000 watt 480 volt three phase simple amp
haha, probably not.
hmm. the ones I use are 600V, but rather similar
3kW, yet not really simple :)
CAN based, and they do some trajectory stuff inside
stustev: are you coming to cnc workshop in june?
I'm looking forward to that
alex_joni: 600V DC?
but AC motors
we have 400V three phase current over here
if you rectify that, you get around 600V DC
doesn't 480 VAC rectify to 600 VDC?
I am looking for to the workshop also. It will be fun.
what is the mazak objective this year?
running some production if I understood it correctly
I think it will be making a few parts, but that should be quick
I want to test/improve rigid tapping a bit
that's my only goal for it - I think the machine is actually done
is Roland using it?
I doubt it
last fall there was some talk about planning/programming a part to run
I haven't been on here for a long time
has there been any more discussion?
I think roland and ray will work out the program. it is a fairly simple part he wants to make.
it is purely 2.5D and has some tapped holes I think
will RahH be there:
yes he is coming this time
I haven't met him yet. It will be good to meet him.
he's planning some interesting classes. he will have a network of machines hooked to a small mill of some kind
a network of machines? controlled by one control?
I'm not sure. I think he wants people to be able to experiment with emc, and then when done, see their programs run
I don't know in detail how he will do this
he may not yet, either :-)
would he need any help?
to get prepared/
stustev: can you use amps in current mode ( which has no feedback ) like the copley 423 ( 173V at 15 amp cont 35 amp peak ( iirc )
I don't know - I was going to offer to look for hardware to loan him, but he is buying some stuff instead
* anonimasu is going insane at aluminium
I cant get it to cut really well no matter how I try
what sfm and coolant?
at first I thought you probably meant trying to afford to buy it :-)
tomp: probably - those sound like what I am wanting. The SCR amps are 33 amp rating at approx 100 VDC. For how long can the 423's put out 35 amps. The y axis pulls 20 amps just to move.
cradek: per tooling manufacturers recomendation
let me get you some better numbers
a few hundres ms, programmable by resistors, and the next model up will do 25A cont... check thier site
2000rpm and 320mm/min with a 10mm cutter 4 flute
anonimasu: what cutting tool are you using?
a dormer C200 endmill
you should get a two flute
it dosent cog it just dosent cut very well
I have flood coolant so chip evacuation works as it's supposed
the four flute doesn't have a deep enough flute to let the chips get out.
stustev: size of 2 packs of cigarretes, needs a simple dc supply ( unreg ) flip a dip swx to get current mode, and give it the analog command from emc ( untested ).
I can take maybe 2mm deep cuts then it dosent cut as nicely
tomp: sounds like what I want
anonimasu: chip evacuation problems
do you have any two flute cutter?
stustev: i remember now, you got some stiction on startup
what machine are you using?
tomp: SOME stiction? the y axis ram weighs 30,000 lbs. It has to move all that mass for every cut.
stustev: a pretty big one
a few tonnes
top picture, nowhere near 30000# in motion, thats more like gross wt ( ram in pic is near 7ft off floor )
stustev: i drive larger with same but still 30k# is bigass heavy
anonimasu: with a solid machine and fixture you should be able to cut 10 mm width and depth with ease.
that machine should be fairly solid
iso 40 taper
anonimasu: that is a pretty machine
brb, I'm going to go look for some 2 flute cutters..
hm, machinists toolbox suggests 0.14 mm per tooth for roughing
and 0.07 for finishing
anonimasu: what is it you dont like about the cut? ( im sure that machine can cut, maybe its a quailty issue )
it will surely cut a full width slot. At whatever depth the length of the flutes are. You probably shouldn't try for more depth than 1/2 the flute length.
tomp: when I do a 5mm cut with a 10mm endmill I end up with small surface imperfections.. ~
it might be the 4 flute cutter.
with a machine like that the cut should be almost silent and very smooth
in iron/steel it ends up shiny
it's probably just me :p
In iron and steel the four flute cutter is the correct one.
(I'd like to find a feed/speed I can just let it hog for a hour or two when I make a part)
I'll be back in 5 minutes going to look in my stash of endmills ;)
slow the feed down to 1 mm/min :)
then you can let it cut for an hour or so
ah! i'm not a mill guy, so I hands this one off to those who know! ( sounds like you need lotsa chip clearance, so 1 or 2 fluke, and .005"/tooth to .0025"/tooth shruppen to schlicten ;)
gnews flash ... the wiki has a small tutor for the Gcnccam program http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?GCncCam
stustev: if I can take 10x10mm cuts sure ;)
stustev: I have one 10mm endmill 2 flute
dormer c100 slot drill short
hm, going to go try it later, if it works im ordering a few more monday
dormer sends all tools express :P
(it's completely insane)
stustev: still there?
stustev: dormer says 0.065 per tooth for slot milling
2000rpm and 261mm/min
anonimasu: you are cutting a slot, not just cutting on one side?
for slots you definitely want to use a 2-flute
with a 4-flute, while one tooth is cutting along the side (where it affects the finish of the slot), another tooth is cutting right across the front
the force on the front tooth deflects the endmill sideways and messes up the finish from the tooth that is cutting on the side
with a 2-flute, that doesn't happen
jmkasunich: yeah, gotta get down into the material somehow
the other approach is to use a cutter that is narrower than the slot you want, and do a finish pass later
* jmkasunich goes to fix the lawnmower
jmkasunich: im pocketing
rather I want to be pocketing :)
and I need ot plunge somehow..
ramp it in
* anonimasu nods
or helical - move the tool center in a circle just a bit smaller than the tool diameter, and go down 1mm or so per revolution
hm, I dont know how to do helcial stuff on that control easily..
it's not EMC?
it's a heidenhain..
anyway, I think helical is pretty simple
just program an XY arc, and put a Z value in too
that is three revs
I dont know how that control does helical stuff..
try what I just wrote cutting air, and see what happens
except the first line should have been G0X1Y1Z0
it dosent to normal g-code either..(online programmed)
in that case, forget I said anything
it's not bad.
it handles complex contours very nicely
fenn: robot joints with tendons ( tendons as motor and as position feedback i think ) columbia uni http://www1.cs.columbia.edu/~allen/GRASPIT/tendon_movie.avi
anonimasu: the Heid circle can take a Z , that makes a helix. begin by defining a ctr, then move to the circumference, then do the circle with a Z on it
tomp: I dont know about that control
rty it while cutting air :)
I tried to do ( contours with z arc..
err arc on z and x..
and that didnt work
then ramp it in , it'll do an xyz motion
but I know helical should work..
but I think that you need to use a helical cycle for it.
and it should (might?) do polar like most Heidenheins
[16:00:42] <anonimasu> http://filebase.heidenhain.de/doku/tnc_guide/pdf_files/TNC300/286140-xx/bhb/331_645-22.pdf
yeah it does..
yes, it got polar. but may be just 2D polar ( on the normal cartesian planes , not free space with angle A B C )
and you set up the pole before using it ( the CC command/btn )
* anonimasu nods
page 57 for the 3D entry example
p821 for helical
p81 for helical
* anonimasu nods
p110 for pocket milling
send me the control when your done :)
no way ;) I like it alot
I like the fact that DNC's working :)
dunno if anyone here is into architecture , this is a project that uses cad & 3D anim to document historic architecture, a real gem of a site http://archive.cyark.org/
argh, firefox doesnt handle the jnlp ecnoded frames
tomp: Interesting site, bookmarked for future perusal.
their point cloud viewer may be of use to some here doing digitizing
* anonimasu yawns
maybe I should go have dinner.
then cut a fixture plate off this stock then go and machine it.
or I'll wait until tomorrow :)
bah - sleep is over-rated
hehe, it's not too late here
I hope the 2 flute cutter fixed it
anonimasu: what is the control? tnc145 tnc155 ...
the tnc 155 will do helical. do you use the conversational or iso (g code)?
the 310 will do helical
the 310 dosent do anything else on the control
tnc310 is the control?
I will try to find a helical example
the manual has one
[16:51:51] <anonimasu> http://filebase.heidenhain.de/doku/tnc_guide/pdf_files/TNC300/286140-xx/bhb/331_645-22.pdf
ramping should work well too right?
I searced for this - Heidenhain tnc 310 helical - and found the previous pdf - page 93 shows helical
superfluous - you had it - sorry
ramp works and is used most - it is easiest - helical generally works the best - you are not cutting in a slot that is getting deeper and deeper. you might try a triangular ramp
with ramping you will generally ramp with every z level - with helical you can open the pocket to the total depth you want to go with the first helical cuts and then do you z levels with the hole in the pocket.
have fun - time for lunch
Hey, can emc run on a DEC Alpha?
JymmmEMC: I doubt that
only as sim probably
stustev: it looks like my mastercam post will do helical too
alex_joni: okey dokey, I'll just gut it then.
it's not i386 right?
RISC cpu's =)
Didn't there used to be Linux for that? IIRC it had "PC compatible ports" ?!?
K`zan: yeah, but I bet there's no RTAI for it
K`zan: there did/is...
Neat machines, I lusted heavily for one about 10 years ago...
K`zan: want the guts? I only wanted it for the chassis =)
Nah, I got over it :). No space in this postage stamp apartment :-/.
Thanks anyhow though
K`zan: Tell me about it... If that was the case I would have *NEVER* given up my Turbo NeXT station <sniff sniff>
It took me like 10 years to give up my very first XT computer with DUAL 5.25" FDD, and 1M ram
12MHz with Turbo enabled.
I guess I should take photos of the DEC Alpha before I gut it out.
I believe it is wide enough to have a mobo on one half and cnc controls on the other in the same enclosure.
Hell, I might be able to use TWO mobo's in one half =)
I just need to find some nice casters for it - then it be easy enough to move/roll around as needed.
and still fit under the desk out of the way.
What is cool about this chassis is that it's screwed, not riveted/welded together. So hopefully it'll make it much easier to modify.
* Sweeper likes hacking up leh cases :3
rivits drill out ;-)
yea, but then the new rivets need painting :/
aluminum rivets don't rust
serious case hacking: http://willepadnos.net/jmkasunich/case-carnage-1748.jpg
but they look fugly :P
I don't care about looks
I just wanted to make it smaller so it would fit in my electronics enclosure
well, form is second to function for me, but I do like things sexy
got rid of the optical drive bays and stuck the power supply over the motherboard instead of beside it
that IS heavy duty hax tho
how long did it take?
couple days IIRC
more pics here: http://willepadnos.net/jmkasunich/case-carnage-1748.jpg
oops, wrong link
[18:01:35] <jmkasunich> http://jmkasunich.com/cgi-bin/blosxom/shoptask/pc-cased-and-mounted-12-14-07.html
jmkasunich: I have a couple 300W 1U PS's - will be louder, but should make for a cleaner mod.
jmkasunich: I was going wth... then I saw the pic of the system in the enclosure =)
jmkasunich: what's the timer relay for?
I have a 300V DC bus in there, eventually part of a spindle drive
the bus caps charge thru resistors, then after a delay the contactor closes to bypass the resistors
jmkasunich: Man, you BARELY got that PC case in there.... it's at the height limit by This much |> <| =)
jmkasunich: what mobo did you use?
no clue - its a P2 that I had around for a long time
info about the power section, timer relay, etc: http://jmkasunich.com/cgi-bin/blosxom/shoptask/power-input-01-06-07.html
there is a link to a schematic near the end
jmkasunich: I've been pondering all day about spindles
where can i get the hardy/emc2 livecd?
mrbits: hardy/emc2 livecd?
ubuntu 8 +emc2
mrbits: the stable version is still 6.06.1 + emc2 :)
where did you see a reference for 8.04 + emc2?
[19:01:18] <mrbits> http://www.cnczone.com/forums/showthread.php?t=53090
mrbits: still working on it, it's not release-quality yet
6.06.1 + emc2 :
6.06.1 + emc2 no work on my computer 8.04 does.#
8.04 + emc2 might not work either
what doesn't work with 6.06?
live cd locks with a brown screen during loading
the alternate cd works untill the emc2 instal script is used . Then it lockes again
is your PC unusual?
sony viao pcg fx802 laptop 512mb ram
if there's a hardware incompatability we don't know about, that makes it unlikely that it'll be fixed just by using a newer version of ubuntu.
how can i troubleshoot 6.06 locking?
at the boot screen, select the option to change the kernel commandline (e.g., for installed ubuntu press esc if necessary to go to the boot menu, then e to edit the commandline) by removing "quiet" and "splash", which should appear near the end of one of the lines of text
then either photograph or transcribe the messages that you see displayed. Often they will help a developer understand what is going on.
ok i will try that. ta!
(photograph if you have a digital photo and can put it online)
ya . i hace a camera
mrbits: even if it ends up running, a laptop is not really good for CNC control
bbl -- really going to lunch this time
jepler: enjoy ;)
me go now and try 6.06 again.
The DEC Alpha is no more....
Though, if anyone is interested in the GUTS of a DEC Alpha, please let me know =)
do you do oversee shippings?
alex_joni: Yes, prepaid.
you're just teasing
Let me upload photos, gonna take a while...
[19:57:09] <Sweeper> http://www.sharenator.com/Why_doesnt_work_my_PC/
Sweeper: sweet :)
Pico ITX form factor - thats just insane.
[20:05:08] <SkullWorks_PGAB> http://www.logicsupply.com/images/photos/mainboard/epiapx_big.jpg
can it run emc_
sure.. just no way to plug an PCI board
or a parport :)
Pico-ITX (10cm x 7.2cm)
This would work - maybe if the SiS Mirage graphics don't mess up RT - http://www.logicsupply.com/images/photos/mainboard/d201gly2a_big.jpg
[20:09:38] <alex_joni> http://www.mini-box.com/VIA-EPIA-PX10000-Pico-itx
* anonimasu nods
just not to sure about Via C7 / Eden CPU's
I may just mount all the electrics on a 1/4" (6mm) Lexan sheet with drawer slides and mount it in the top of the base stand.
sounds good to me
maybe mount the stuff that has fans upside down
and bolt fans to the other side of the lexan
alex_joni: The wiring harnesses http://farm3.static.flickr.com/2018/2443997336_4f3e3d6b43.jpg
[20:29:48] <JymmmEMC> http://farm4.static.flickr.com/3079/2443172517_f26ff64882.jpg
REALLY AFTER http://farm4.static.flickr.com/3273/2443174523_d6daab37bb.jpg
Love the honeycomb http://farm4.static.flickr.com/3060/2444001504_01a4988848_b.jpg
I might rip out (via angle grinder) the grates from the dual PS's http://farm4.static.flickr.com/3156/2443165921_369f1f9463_b.jpg
alex_joni: So, you still interested in the guts of a DEC Alpha? LOL
can emc run on a smp system?
Vq^: define SMP.. that's quite generic
more than one logical processor
yeah, as in usable from userspace
i know it works on smp hardware, because im doing that now :)
so you're interested in HT processors?
but the OS isn't aware that it is a dualcore processor
ah, that's because of the kernel
you can probably build a SMP kernel with RTAI support for your machine
cradek built a couple for his machine
but he got to the conclusion that what works on one machine, doesn't on the next
there are some packages at linuxcnc.org
running a test program on the mill: http://video.google.com/videoplay?docid=-4918805093165248240&hl=en
anonimasu: thx, it seems to work OK now, all three axes. PID tuning with single moves gives max 0,02mm to 0,01mm following errors.
still have to mount the spindle encoder if we want rigid tapping
* anonimasu nods
how does the drives work?
there might be a few things in emc/HAL that could be optimized for these kind of simple pwm drives
* anonimasu nods
having a drive that actually looks at the motor current and runs a loop on that, or having a velocity drive with tach-feedback would probably be better than this setup, but at $200 for the m5i20 and around $125 per drive this gives good performance/price
I should probably buy the analog drives from him..
I've got tachos mounted at the motors already :)
oh, do you have harware for EMC to read the tachs?
havent decided what I'm going to buy
is this for your lathe?
you have an opti bf-20 also?
the pico systems 0-10v drives takes tach as input
oh, that must be another model, not the PWM-drive I have?
[21:44:27] <anonimasu> http://www.pico-systems.com/servo.html
ok, so you probably want a motenc-lite or the pico-boards to control that. (with DAC's and ADC's)
dosent mesa have some adc boards?
mine are these: http://www.pico-systems.com/pwmservo.html
it has a servo daughtor board.
yes mesa has a board that converts to +/- 10V. I haven't used it
I dont know what would be the best thing to use
as I already have tachs being able to utilize them would be nice
yeah, a separate speed loop will probably help
im ~ between options
the analog drives are only $60 ??
here's a challenge for all minimill owners: 1mm depth-of-cut, 20mm width-of-cut, 500mm/min feed: http://video.google.com/videoplay?docid=-6222166294337898920&hl=en
I did that kind of cut today
alex_joni: Yeah, I figure I have enough room in there to have everything in a single enclosure, yet still have the ability to swap out mobo etc if I ever need to.
err 2.5doc 200wm width ;)
(not on a minimill)
awallin: that sounds great
awallin: just air as cooling?
our coolant was in a not-so-pleasant state so we wanted it to stay in the tank :)
awallin: I've got a question for you
alex_joni: If I remove the frame that held the removable hdd's in, I'll have a bunch of spare room even. And, the "H" frame dolley with casters on it should bolt on easily enough.
how does this work
[21:55:10] <anonimasu> http://video.google.com/videosearch?q=homemade+cnc+%2B+high+speed&hl=en&sitesearch=
err sorry http://www.youtube.com/watch?v=ZPqJTPvvFMI&eurl=http://video.google.com/videosearch?q=homemade+cnc+%2B+high+speed&hl=en&sitesearch=
Feed is 6000mm/min
Spindle speed is 3000rpm
2 tooth endmill
i love em
anonimasu: doesn't look like he's taking too deep of a cut each pass
but 1mm per tooth..
yes... the bottom of the e/m isnt flat.. it has a rad to it... just BARKS material off... more metal displacement the macining
Overall material removal rate probably hasn't gone up any.
fast and shallow
no he is limited to DOC by the rad on the tool and CR
it looks flat to me
yes it will.. i demonstrated a 50 mm on a 300mm extension at 500 rpm and 300 inches per minute...
in aluminum you can probably cet by wit a good CR.. but i was in p20 hardened tool steel
perfect 6's and 9's for chips.... all the ladies loved ME
had i offer me 500 bucks to make her a set of earrings... i did it for free of course... ; )
there's probably a reason why all hsm machining centers have spindles that go to 12krpm or more...
had the mazak booth next to me blow a belt stalling a 10" f/c at .15" doc while trying to pull some of the 300+ ppl in front of the toshiba booth
and here I am and I cant make aluminium cut nicely -_-
yes and NO
ive cut aluminum at under 3000 rpm.. and won most of my life.
got any good tips?
other then not to use 4 flute cutters ;)
i have MANY production parts with tools running at 75 RPM
what kind of tool diameters?
holy crap vortex coolers are expensive
2 flute is good... i prefer 3... but with big flutes... inernational minicut are awesome... Hanita as well
spotface tools can run to 2.5" dia
[22:08:52] <anonimasu> https://secure.vortec.com/store_products.php?catID=15
what kind of aluminum are you working with
[22:10:08] <anonimasu> http://www.visi.com/~darus/hilsch/
it has got to be the gummiest aircraft alu if ever worked with..... speed AND feed will be your friend
it's not aircraft alu afaik..
but i dont know very much
you have to flow it out of the flute while still hot
that dosent sound like this material somehow
yes it is
it chips really well
let me get you some more specs
[22:13:43] <anonimasu> http://en.wikipedia.org/wiki/6061_aluminum
if its chipping whats your problem
if it's T6 temper it shouldn't be too gummy
"6061 is widely used for construction of aircraft structures, such as wings and fuselages, more commonly in homebuilt aircraft than commercial or military aircraft. "
I guess I need to cut it with 2 flute tools instead of 4 really..
that feels like the big issue
I dont end up with the finishes I want nearly :/
and it's kind of random how well plunging/ramping does work..
ie, make them slip in the collet
do you slow your feed for the ramp/plung??
I've tried both
try 30 % your feed for the plunges...
for plunging I reduce it quite a bit, that works ok
im looking for a magic formula that will just make parts(that I can stick into the cam program and leave the settings) and just cut :p
or well, something that works well without a scared operator(me) yanking down the fo when things get tough
be brave little soldier...
it'll work itself out I guess.
what it is you need cut 1st time right???
oh, nothing.. just in general I dont like messing up parts and breaking endmills
well a programming system your comfortable and ist updated every week helps... thennn break some cutters.. set your limits and run for the hills
yeah.. though programming isnt the issue, it's getting into the part that's my issue :p
i did cutter testing for our mfg facility.... blow it up... then turn the next 1 down 1 notch
I think I've got the wrong tooling for aluminium.
im going to try with a 2 flute tomorrow.
good night all
for alu or a general purpose coolant??
a general purpose
watch it dont stain and/or corrode the parts
give it a try... brb
it's "omega - coolway"
what I use
This is strange.... I have a transformer that only has two wires on it.
JymmmEMC: maybe it's not a transformer
can be a power inductance
that's not a transformer, it's an inductor
jmkasunich has the proper name :)
* alex_joni is off now :)
Sounds like old audio xover inductor
coulda fooled me.... It's a chassis mount small bobbin wound looking like a transformer you might find in a clock radio
is this in the DEC?
jmkasunich: It was, yes =)
in the PS
its an inductor
I'll take a pic later, but I have never seen an inductor made in this fashion before
looks EXACTLY like this, but onyl two wires http://www.radioshack.com/product/index.jsp?productId=2102702&cp=2032058.2032230.2032277&parentPage=family
jmkasunich: I believe ya, just bizzare
whats a replacement keyboard for an acer laptop run any one have a clue... ??
maybe not a whole lot http://search.ebay.com/search/search.dll?satitle=acer+laptop+keyboard
oh i for got.... they obviuosly ALL come from china....
thx man.. reality check
can all of you use chopsticks????
better learn ...they are coming to a theater near YOU
heh - to run spiral at 500ipm and .005 res - accelleration needs to be around 1000in/s/s
sounds about right
i usually turbo-mill holes at300ipm and .oo5.. runs me into 800in/s/s
i'll look for my spread sheet to calc it later and try to post it
we had a machine that did ORBITAL BORING.... interpolated the x-y and co-ordinated the tool orientation.... then moved the z... to make a horizontal machine a LATHE
this is a production toshiba nx76 option
fyi i was Toshiba applications Eng for near on 3 yrs...
did you know a guy named Charles Bumpass at Toshiba?
the name sound familiar ... but i cant place a face... out of chicago??
he helped me a lot with a bunch of drives I had at the time
you could never forget his name...
when it went lean they fleew em in from everywhere come SHOW time.... ; )
this was late 70's early 80's time frame
hey i went to SPC training given by Ben Dover..... no word of a lie....it sticks in you head.... LOL
* anonimasu yawns
might be time to go to bed soon
any stats/lean/6sigma shit just takes me bake nad makes me giggle way out loud
and 5s too
6s.. SAFETY now
go fu#@$%# ing figure...LOL
5s means throw everything in the dumpster if it don't have a place and a label LOL
* anonimasu is so lost
my recent 5s rating for my workplace was a -4
i don't have to deal with it just hear my customers complaining
and get a lot of good stuff from the dumpster...
now if this aluminium will cut nicely tomorrow I'll be all happy
im a pack rat.. get over it.... was my explanation to the auditor.... my director asked... you need all this shit den.. YUP.. ok.. its file D's way...LOL
lean is a mile wide 1 " deep--- 6 sigma is 1" wide 1 mile deep" ... lets mix'em up...