Are there any devleopers here ? I have a question :)
There should be some - ask away!
I am playing with backlash code on a mill with scales and joint->ferror includes joint->backlash_filt .... Can anyone tell me why this is done ?
Would it not be better for joint->ferror = joint->motor_pos_cmd - joint->motor_pos_fb
so that joint->backlash->filt and joint->motor_offset are excluded ......
code is in emc/motion/control.c
MarkusBec is now known as MarkusBec_away
tomp is now known as tom3p
a bit OT, but does anyone know if it is possible to buy real hinges made of ABS (not a live hinge) for gluing onto a ABS sheet?
ds3: I've only seen acrylic, not ABS
Jymm: that agrees with my search results :(
I'd hate to machine one in the size I want :/
ds3: Why ABS and what is this for?
Jymm: I want to make a little lid for a electronics thing... the lid will have machined in features so ABS is best suited. I want to solvent weld the hinge on hence the need to match the plastic
Well, if you don't want to make a simple block type hinge out of ABS scrap you already have, this is the best I could suggest... http://www.tapplastics.com/shop/product.php?pid=125&
I don't want to make something that looks like a door hinge but in 1/10th scale
Take two blocks of ABS, give them interlocking fingers, and shove a dowel in em
that sounds tricky to do since the hinge needs to be like 1inch wide and no more then maybe 0.030 thick
then use the acrylic hinge
any suggestions on how to attach it to a thin peice of abs?
AFAIK, there is no glue that would glue ABS to Acrylic
two part epoxy
that stuff works on plastic?
it works on anything
not the putty stuff, the stuff that comes in a syrenge
we use a two-part epoxy to glue graphite to anodized aluminum
it is syringe-based
stuff does NOT come apart
I used a version before and they recommend mixing it in a dish like molding on the packaging... the dried stuff flakes off the plastic "mixing depression"
[03:14:43] <Jymm> http://www.homedepot.com/Paint-Adhesives-Tape-Adhesives-Epoxies-Super-Glue/h_d1/N-5yc1vZaqrbZ1xr5/R-100670610/h_d2/ProductDisplay?langId=-1&storeId=10051&catalogId=10053
I'll think about that... alternative would be to pop rivet some brass hinges in place
the reason I don't to make it is i don't want to practice deep hole drilling with a 0.010 drill
good morning.when i open a partprogram in xemc userinterface the font text for partprogram is small.is possible have the upper fonts ?
MarkusBec_away is now known as MarkusBec
[14:44:37] <skunkworks> http://imagebin.ca/img/u_56HDAT.jpg
what is that ? a testical of an elephant ?
gjees that thing is huge
heh - mother hubbord squash
dont know it :)
looks like a vegetable (dont get much of those)
skunkworks: your garage door counterweight - for all three doors!
That is a great idea!
we have enough of them
right now the whole garage is full of rummage sale stuff..
the whole thing.
Could open a daycare center too.... just attach one of those to each kid. If the kid gives you any trouble, attache two of em!
(next week is the village wide rummage sale)
wth do you live?!
the village of trempealeau..
skunkworks: Hell, the state park is like 4x bigger than your town!!!
yes - it is.
even the river is wider than your town is!
skunkworks: You guys have some serious speed traps or what?!
actually - no. suprsignly
[15:31:39] <skunkworks> http://www.bing.com/maps/#JnE9eXAuMjQ2MDArMm5kK3N0K3RyZW1wZWFsZWF1K3dpJTdlc3N0LjAlN2VwZy4xJmJiPTU3LjQ2ODU4OTE5MjA4OTMlN2UtNjYuMTgxNjQwNjI1JTdlMjcuOTE2NzY2NjQxMjQ5MSU3ZS0xMTYuNTQyOTY4NzU=
skunkworks: What is that thing between 8th & 10th and King & county Hwy ?
I think you are seeing the junk yard :)
skunkworks: Oh, like a pick-a-part?
car junk yard
I couldn't tell if it was a trailer park or what - google maps doesn't zoom in that far.
[17:25:05] <Jymm> Could open a daycare center too.... just attach one of those to each kid. If the kid gives you any trouble, attache two of em! <<--- lolz
what switches (types) do u guys use for homing/end switching ?
Jymm: our house is to the left of the arrow - (you can see the garage pad) (smaller house)
skunkworks: Sorry, I don't do M$ =)
skunkworks: It's all good... I just haven't heard the term 'village' used in the continental US is all.
skunkworks: Funny thing is that I was working on a GeoDB when you said that too =)
the village people came out of the US i thought, didnt they . :)
tomp is now known as tom3p
mmmm.. yummy http://www.tflex.com/design/examples/exsa3_big.jpg
think that's a diamond turning machine?
tomp is now known as tom3p
it has the B axis attachment to keep the same rake/relief angles relative to the surface normal, which is used for machining optics but i don't know what else
naais cewl machine, what wil somithing like that cost >?
fenn: that looks like a turn/mill machine
not a dtm
it's also got a Y axis
pesudo-y axis, anyway
and to zeroflex, a machine like that costs .75-1mil usd
hmmzz i think i gonna buy one next year, it wil ruin my savings account but hell ... :D
toastydeath: what's the triangle shaped thingy in the secondary spindle/rotary axis
a regular lathe tool
they can do tool normal machining, no sweat, but they're not diamond turning machines
i've seen some milling machines with al lathe axis onderneath it
not just a turntable but a real lathe
[21:19:47] <toastydeath> http://www.youtube.com/watch?v=JZcFMjLmjZc
that is one of those machines running
supose, i would build something like it, a normal type of spindel wouldnt be suited for lathe cutting i think or ... ?
any spindle that is rigid enough to turn will be rigid enough for milling
the issue is the dual drive
oh, you mean the B axis
put a small lathe on my milling table (easy sad but that aside) and put a lathe (beitel is dutch) tool pice in correct angle in my spindel, would that be possible ?
that is possible, i think the Tormach does exactly that?
so the little motor in front (with the orange bracket) is for positioning, and the big rear motor is for turning?
fenn: not sure what you're referring to - the vid or the solid model
well it's still cool :P
holey shitti, what a naais machine, hum much axis 1 2 3 4 5 i see or am i wrong
the main spindle drive is probably 50+ hp, the servo only needs to be ~5-10 in the worst case
zeroflex: you aren't seeing all the axes in that video, it's not uncommon for a turn/mill to have upwards of 15 axes
om my god, how wil you write a program for it
why is the Y axis at an angle instead of vertical?
cam sofware is the only way to program those machines
and it's specialized turn/mill cam software, not just any old mastercam thing
because the Y axis doesn't have to be that big, they care more about rigidity
so they make a "virtual" y axis by sliding the top slide down, and the bottom slide out
the machines that have a "true" y axis tend to not be as rigid
i will be (honestly) proud of my own 2 hands, if i can retrofit my own mill .....
15 axis.... gjees sick :)
because then you have to move the A/B head perpindicular to the 60/80 degree bed
imagine that lower slide wasn't there, and the back of that a/b head was on a Y axis
that's a lot of metal hanging out if you're going to be doing 50 hp cutting
ah so it's the overhang distance
for straight milling it would be fine, though
those machines do not have very large motors on the B axis, so they're somewhat milling limited
50 horsepowers on an axis ?
the turning spindle is 50 horsepower or thereabouts on those machines.
look on the solid model, at the headstock... the big damn thing sticking off the back end is the turning spindle
towards the back
thats something else then my little maho
for the better part of a million dollars it better be
what type of servo's do u think i wil need on a little maho milling machine ?
i dont know what range to search for (nm)
i have no idea
i don't have any experience building cnc gear
the same over here
think i wil buy some stronger ones
15 to 20nm's
do u work with those machines toastydeath ?
not turn/mill, but mills and lathes
dmess, when he shows up, has a few turn/mill machines
i forget what make
never workt on a cnc of nc machine just, handwheels
it's all very similar.
yha... not for me :)
must build a machine first (retrofit it)
yeah, i prefer to just use the things
I don't think I'll ever build one, just buy used
5-10k for decent older machine
i retrofit one, for me a bit cheaper and cute building/learning curv
but i'm off to sleep
its 00.04 over here in holland