Note: I posted this on CNCzone.com last night, but I think I'll get a better
response here. Sorry for the cross-post.
I feel like a fool but I don't get the trick with tool-changing. I use CamBam
to create the gcode for a series of operations that require a couple of
different endmills. I
On Tue, Dec 01, 2009 at 05:31:11AM -0800, Michael Grundvig wrote:
I've also tried stopping the operation but I can't figure out how
to get it to resume at the line where it left off properly.
You are right that you have to stop the program to do all this other
stuff involved in changing the
Hi,
For the first time I have to mill a precise aluminum part and discovered
that the x and y axes of our CNC mill are not properly aligned at an
angel of 90° but show a deviation of about 10.
Is it possible to correct this misalignment in software using EMC or
Mach3 (both soft CNCs are used
An emc user has contributed a kinematics module to correct for XY skew.
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?ContributedComponents#millkins_trivial_kinematics_extended_by_XY_skew_correction
I have not personally used this kinematics module.
I think emc's main limitation when using
2009/12/1 Florian Rist fr...@fs.tum.de:
Is it possible to correct this misalignment in software using EMC or
Mach3 (both soft CNCs are used here)?
Such a situation is specifically mentioned here:
http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Kinematics
Though I haven't found an existing
I'd shift it in the CD software and run the CAM again
On Tue, Dec 1, 2009 at 9:50 AM, Florian Rist fr...@fs.tum.de wrote:
Hi,
For the first time I have to mill a precise aluminum part and discovered
that the x and y axes of our CNC mill are not properly aligned at an
angel of 90° but show
2009/12/1 Jeff Epler jep...@unpythonic.net:
I think emc's main limitation when using kinematics to correct these
kinds of machine imperfections is that jogs are not corrected--a Y jog
will only turn the Y motor, not both motors together.
Do the coordinates of the non-jogged axes update
Good morning listers,
I am cautiously submitting my first official question, but I suspect this
may have the same response that asking an e-list of Honda Goldwing
motorcycle riders what the best motor oil is. You can't even imagine unless
you've seen itbikers can get ugly over motor
Florian,
EMC2 can do that.
I corrected the perpendicularity of the linear axes and also the
misalignment of the rotary axes A and B.
The X, Y and Z axes are not mechanically orthogonal.
The axis of rotation of the A axis is not exactly parallel to the X axis.
The axis of rotation of the
I'd go for the Opto Board as it gives you more protection from the
harsh stepper environment.
Actually... I'd rather buy a complete one and get on with the project
rather wasting time with such a small part of a machine.
Rainer
On Tue, 2009-12-01 at 11:34 -0500, Martin Pinkston wrote:
Good morning listers,
I am cautiously submitting my first official question, but I suspect this
may have the same response that asking an e-list of Honda Goldwing
motorcycle riders what the best motor oil is. You can't even imagine
On Tue, 2009-12-01 at 11:23 -0500, Rainer Schmidt wrote:
I'd shift it in the CD software and run the CAM again
At first, I agreed with you, but now I'm thinking, skew would be better
fixed on the machine. You would correct the problem once and be done.
With the skew correction in the CAM,
o.k. I forgot to mention that this is for the mini mill (my first conversion
attempt) and that the drive boards on the Centroid Controller has opto
isolators already on the board. There is no spindle control other than a
relay to turn the motor on or off. If I want the motor to go in the other
I had this same problem and wanted to use MDI to move the table and Z
axis to make the tool change and zero the Z axis. Leslie Newell created
a revised hal_manualtoolchange which I have attached. The exchanges
that explain it were under Using MDI during a Program? starting about
june 24 09
You could write a simple program or script, even in basic, to parse the g
code file after it is generated, and insert a few lines of code before and
after a M06. Make it lift the Z to a certain height and return afterwards.
It may even be possible to insert this into your post-processor function,
I am with Kirk.
Months ago I played with the gantrykins to correct mechanical skew on my
router gantry. After several days of fiddling, I did get it to work, but
one comment from a email response suggesting I just dive in and correct the
skew at its source stuck with me.
I loosened the gantry
It may even be possible to insert this into your post-processor function,
depending on the versatility of the program.
This is available in Cambam. Cannot recall where exactly it is, but there
is the option to add snippets of gcode with certain actions
You might ask on the CamBam forums.
When I get into the bios, I had to go through and check where parallel port
was. It shows at 378/ IRQ7. Then when I go into the IRQ resources it show
IRQ7 as PCI device. Well the parallel port is actually part of the mother
board and not a PCI device, so I changed the parameter to Reserved.
My
Roland Jollivet wrote:
You could write a simple program or script, even in basic, to parse the g
code file after it is generated, and insert a few lines of code before and
after a M06. Make it lift the Z to a certain height and return afterwards.
It may even be possible to insert this into
2009/12/1 Martin Pinkston martinpinks...@gmail.com:
. Did I do the right thing ?
Probably not.
Not all PCI devices are in PCI slots, there can be hardwired PCI
lines on the motherboard too.
I would suggest putting things back as they were, then seeing if it
works. (Unless you have already
Michael Grundvig m...@... writes:
Note: I posted this on CNCzone.com last night, but I think I'll get a better
response here. Sorry for the cross-post.
I feel like a fool but I don't get the trick with tool-changing. I use CamBam
to create the gcode for a series of
operations that
Hi Rainer
I'd shift it in the CD software and run the CAM again
I thought about that. It´d be quick and easy but I not a very nice
solution and one that would introduce an extra step and therefore an
extra chance to make mistakes.
The similar, but more robust solution would have been to
Hi Brian
Go back and ensure you are certain you cannot eliminate it mechanically
first.
Of course that was the first think I tried, but it's completely miss
aligned and would be quite a hassle to aligned it mechanically. I have a
deviation of 0.3mm on every 100mm.
By the way, it's not
Hi Andy
I think emc's main limitation when using kinematics to correct these
kinds of machine imperfections is that jogs are not corrected--a Y
jog will only turn the Y motor, not both motors together.
Do the coordinates of the non-jogged axes update correctly? If so it
seems only a
Hi Jeff
thank for you answer.
An emc user has contributed a kinematics module to correct for XY skew.
http://wiki.linuxcnc.org/cgi-
bin/emcinfo.pl?ContributedComponents#millkins_trivial_kinematics_extended_
by_XY_skew_correction
Great, that´s what I was looking for. I was easy to install and
Florian Rist wrote:
Hi Brian
Go back and ensure you are certain you cannot eliminate it mechanically
first.
Of course that was the first think I tried, but it's completely miss
aligned and would be quite a hassle to aligned it mechanically. I have a
deviation of 0.3mm on every
Good evening group,
I know this may not sound like a big deal to most of you, but just think
back to when you had your first. ( get your mind out of the gutter...lol)
Now here is something to really chuckle about.
Dale, one of the members on the list here is a recent acquaintance and I'm
starting
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