hm, I didn't mean to type that in this channel, but whatever
BigJohnT: hello, sorry I been runnin
hm why can't G38.2 and G53 be used together? That would be natural for tool length probing
jepler: I consider it a bug that they can't be
iirc, the spec doesn't even say which coordinate system the returned point is in
in my tool length probe routines I use all differences so it doesn't matter, even though I know how it works
oh maybe it does implicitly say which coordinate system, since it says 'location of the controlled point'
g53 should be the referance syatem... DONT callit up
Now to figure out how to do it :).
hmm there is bug condition, not easily reproduced with homing / jogging
can get past the hard limit then jog freely
Does anyone here use FreeMill?
I can't seem to find how to make it step gradually down in the Z... It always want to just drop the tool all the way in.
what is FreeMill?
I think it's essentially an old version of VisualMill.. http://www.mecsoft.com/Mec/Products/FreeMill.shtml
are you talking about making a pocket or something?
Guest60385 is now known as raven2
3D milling operations... usually starting with STL files
most cam software have a depth of cut somewhere
Yeah, I've had better luck with MeshCAM since I found the setting there...
but visual mill is free :) perhaps I'm just getting what I pay for.
also you might try over on CNC Zone they should have a forum for freemill...
yea, you might have to trick it by telling it the top of the material is higher than it really is for the first cut
oh well, I've stopped bleeding so it is time to get back to work :)
BigJohnT, machine the work not the fingers
archivist I slipped and jammed my thumb nail :) so no loss of fingers!
boss here had a .8 module index finger one day
BigJohnT: good morning
were you looking for panasonic plc's the other day?
oh, yeah... been araound & around on that.. i wanted to replace with Automation Direct but cant
I have a connection with panasonic
if you need something...
2 axis will be mfctrd in Taiwan and 6 in USA. I'd like all same mfctr, but AD has private labeled the servos, so they are made in Taiwan but not available in Taiwan
We will use Panasonic Minas Mama 750W
nice, I just finished up building three machines with panasonic plc/servo combos
have you used the absolute encoder feature?
no, these are the simple servo drives that take step and direction from the plc
used a FP-X plc with two touch screens to control the drive
super simple with the motion libs
ah! I'm not familiar with thier steppers, sounds nice , prev pix of your machine look good :)
no these are servos
and servo drives
when you say 'motion libs' is it programmble like gcode ( per use) or static path like burned in rom?
oh, a servo that gets step & dir, i heard of those
the motion libs are for the plc and give you homing, abs move etc with one rung of code
they are so easy and work well
and cost effective
ok, rung of plc, so motion is predetermined
I can run them right up to 3k RPM with step and direction from the FP-X
the distance could be a variable
yes, but i guess endpoint is fixed on a single axis ( no interp in thier library ), maybe i oughta read the lib docs, i have preconceptions;)
thanks for the input, i was quite stuck
for the simple drive it is but for the next one up coordinated motion is there
with two axis
lewin1 is now known as lewing
can someone help me /w a segmentation fault ?
when do you get it?
Guest395 is now known as skunkworks_
when useing a browser
piasdom: you may get better info from #Ubuntu, but try to find out if you get segfault with ftp (determine where error lies). The error is not with EMC ( 99.999% sure ;)
ok thanks tomp
tomp: next time ask for how much memory his system has
if it's more than 1G and it segfaults, it might be a problem with the current rtai
alex_joni: ok, i will watch
haha the .001% strikes again
huh - .015ohm 7w resistors are spendy..
[21:13:17] <skunkworks_> http://www.cnczone.com/forums/showthread.php?t=60818
anyone know where i can find the right calculations to calculate the vector velocity between point on a five axis part program
I don't understand the question - please elaborate
i am troubleshooting a 93 inverse time problem and I think the post processor is miscalculating the correct g93 value
well I am running a part program in 5 axis mode
the part is 40 inches long
the machine cuts the first 75% of the part in one min
the last 25 % takes one additional min
the part is an air foil for a propeller
I think the post processor is mis calculating the a and b axis points
and miss calculating the G93 velocity
causeing the machine to cut this section very slow
a cut that should take one minute should be G93 F1 right?
the x motion is basically the same spacing along the part it just has some b and a axis twist
it doesn't matter what moves and how far
so the velocity should not change by 75 percent
yes if that were one block
but there are many blocks
and the cnc code generator is changing the block spacing
oh I see what you're getting at
to maintain a certain chip load
on the tool
a 3 axis system is simple to check
the b and a axis vectors i have not done before
if XYZ is the tool tip location, you can neglect a/b when you calculate the feed
in your setup, does the post or the control do the pivot length compensation?
g93 if based on one min is 1/1 = one min move
1/2 is 30 seconds
yes I know how g93 works - I'm still trying to understand what you want to calculate
most of my F valuse are 70
those should be 1/70th minute, just less than a second each then
and the feed rate is about 25 inches per min
that is what I want to maintain
25 inches per min
about how long [distance of tooltip] moves do these blocks represent?
g94 does not work with rotary axis
so it has to be g93
I still don't understand the question and you have not answered any of the things I asked while trying to clarify the problem
I'm off to dinner, be back later