2009/9/29 Jon Elson el...@pico-systems.com
Sven Wesley wrote:
I can cannot see any changes in speed even if I push put all my body
weight
on the Z-axis, it just runs super easy and the motors never gets warm. It
doesn't _seem_ to be a force/power problem.
I have put so much money and
2009/9/29 cogoman cogo...@verizon.net
I am catching up on my EMAIL, and I've still got 10 EMC digests to read,
but I wanted to comment on the quote below. This gives the impression that
you are setting the PID values for the servo motor on the bench with nothing
attached. This is not a good
Have you tried ls /home/aram/Desktop/TR2~ to see if the directory
actually exists?
Mark
At 01:03 AM 9/29/2009, you wrote:
I try with ~ and without and still No such directory
I used rm and still No such directory
I just type this into Terminals. Is this way to do that?
thanks
aram
On Mon,
Thanks for reporting this. The manuals have been corrected.
You have to loose the quotes as well like this:
loadrt debounce cfg=1,2,3
John
On 28 Sep 2009 at 12:42, Eric H. Johnson wrote:
HI all,
This was from Andy's inquiry of a couple days ago. It appears that
the
documentation for the
Hi,
is it possible, in a 4 axes machine, modify the rotation center of the 4th
axis? In other words, how can I say to the system which is the geometry?
Thank you
Luigi
--
Come build with us! The BlackBerryreg;
Hi,
I think the following new tool might be useful for some people here.
It's a tool to measure hardware latency. That's latency _not_ caused by linux,
but by the BIOS or something else.
So if you observe latencies beyond acceptable limits with this detector, you
can pretty much go and buy new
a...@conceptmachinery.com wrote:
I try with ~ and without and still No such directory
I used rm and still No such directory
I just type this into Terminals. Is this way to do that?
When filenames have strange characters in them, like spaces, commas, and
punctuation
symbols that mean
I see where EMC2 supports User Mcodes. What scripting language is used to do
so?
Can you include Gcode moves in the Mcode as well.
I have Mcodes from another system that do things like probing solutions.
These functions are called as Mcodes and can be run from the Gcode side and
from the MDI
-- Forwarded message --
From: Andy Pugh bodge...@gmail.com
Date: 2009/9/27
Subject: Re: G76 Threading
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
2009/9/27 Andy Pugh bodge...@gmail.com:
http://www.youtube.com/watch?v=NDA48nLdbiI
More data after a long
(I thought you were all ignoring my questions, but I suspect that I
was sending from an email address not registered with the listserver.
Brace yourselves for a flurry of posts)
I seem to be having a spot of bother with G76. I thought it was
working fine, then noticed that the z axis was running
2009/9/27 Andy Pugh bodge...@gmail.com:
2009/9/27 Andy Pugh bodge...@gmail.com:
http://www.youtube.com/watch?v=NDA48nLdbiI
More information.
G33 is exactly the same.
Smaller pitches are better, but even 1.25mm pitch (20 tpi)
occasionally gets the wobbles.
--
atp
--
atp
As it seems that nobody has any ideas about my thread-cutting issues
(and making a higher-resolution encoder with a smaller index pulse
didn't help at all) I have now decided I need to know how G76 and G33
work, ie what the control algorithm is. Is there a writeup anywhere,
or do I need to look at
I understand that some interpreters write the current z,y,z etc values to
memory registers (I believe Fanuc uses #5041-#5046)
Would it be possible to add that to EMC2? at the end of each move
would be often enough.
It would be handy for adaptive G-gode modules so that you could jog
to a start
(Sorry to start yet another thread on much the same subject, but this
is a bit broader-ranging)
It seems that spindle-synchronised motion is very sensitive to encoder
regularity.
Using the p-port to read the encoder position means that as the
encoder linecount goes up, quantisation error in the
do you need one of use to make/cut a disk
Dave Caroline (archivist)
--
Come build with us! The BlackBerryreg; Developer Conference in SF, CA
is the only developer event you need to attend this year. Jumpstart your
2009/9/29 Dave Caroline dave.thearchiv...@gmail.com:
do you need one of use to make/cut a disk
My machine has a milling head and a 4th axis, so making my own is
fairly straightforward (But thanks for the offer).
However I run the risk of doing a lot of machining and still having
exactly the
you need a good contrast with reflective, I prefer a gap type, ambient
light is another problem to watch for
Dave Caroline
--
Come build with us! The BlackBerryreg; Developer Conference in SF, CA
is the only developer
On Tue, 2009-09-29 at 17:04 +0100, Andy Pugh wrote:
... snip
http://www.youtube.com/watch?v=NDA48nLdbiI
More data after a long discussion on the IRC channel:
HAL setup: http://www.pastebin.ca/1581821
Halscope grabs:
http://www.atp.pwp.blueyonder.co.uk/G76.png
VMAXEmbarq wrote:
Does EMC support this type of function ? From the user manual it seems that
EMC only supports Mcode that do system functions such as turn on this or
turn off that.
Hi
i believe there is no way at the moment to include Gcode in a coustom
Mcode function as its just a
2009/9/29 Kirk Wallace kwall...@wallacecompany.com:
I have only read the original post and watched the video, so I may be
off base here. I had the same symptoms on my lathe. I believe the thread
pitch and spindle RPM are at a rate that is beyond the Z axis abilities
to accelerate. I slowed my
On Tue, 2009-09-29 at 17:43 +0100, Andy Pugh wrote:
2009/9/29 Dave Caroline dave.thearchiv...@gmail.com:
do you need one of use to make/cut a disk
My machine has a milling head and a 4th axis, so making my own is
fairly straightforward (But thanks for the offer).
However I run the risk
Gentlemen,
I need feed hold to work in MDI. Is that a lot of work? Is it something I
can try to do (with help and guidance)?
thanks
Stuart
--
you can lead a person to knowledge
but you cannot make him think
--
Come
That should work using the hal pin from the motion controller.
Feed override - 0 should also do the trick.
Regards,
Alex
--
From: Stuart Stevenson stus...@gmail.com
Sent: Tuesday, September 29, 2009 9:06 PM
To: EMC2-Users-List
Gentlemen,
If it is a matter of hal configuration I am a happy camper. I will work
on it and report what I find. I need to do some ladder work anyway.
thanks
Stuart
On Tue, Sep 29, 2009 at 2:42 PM, Alex Joni alex.j...@robcon.ro wrote:
That should work using the hal pin from the motion
2009/9/29 Kirk Wallace kwall...@wallacecompany.com:
I still think your threading problem is due to the Z acceleration issue.
You may try cutting an air thread that is as long as your Z axis will
allow. If your thread wanders the same across the thread then I would
look into your encoder more.
Andy Pugh wrote:
(Sorry to start yet another thread on much the same subject, but this
is a bit broader-ranging)
It seems that spindle-synchronised motion is very sensitive to encoder
regularity.
Using the p-port to read the encoder position means that as the
encoder linecount goes up,
Stuart Stevenson wrote:
Gentlemen,
I need feed hold to work in MDI. Is that a lot of work? Is it something I
can try to do (with help and guidance)?
If you set up some kind of external (non-keyboard) control for feed
override, that will
work as EMC exists, now. Do you have a spare
Andy Pugh wrote:
My system seems to track a 50-line encoder adequately, would that
nromally be considered enough resolution for threading?
50 lines is 200 quadrature counts, should be fine for threading, I would
think.
That is a unique position reading for every 360/200 = 1.8 degrees of
Jon,
I have a pulse generator tied to the slider bar. When I turn the feed
down the slides stop.
I want the feed hold button to stop the feed immediately (like it does
when running the program).
I have the feed hold button working through a classic ladder program. I
will work to
Jon Elson wrote:
Sven Wesley wrote:
I can cannot see any changes in speed even if I push put all my body weight
on the Z-axis, it just runs super easy and the motors never gets warm. It
doesn't _seem_ to be a force/power problem.
I have put so much money and time in building a servo
I have feedback from the spindle drive to tell the machine when the
spindle drive has an error. I need to incorporate that into ladder also. I
want the machine to go into feed hold when the spindle drive errors.
thanks
Stuart
I think we need to add a non maskable motion hold pin to
Ok, I'm still trying to setup my scaling in PDM mode. I have a base period
of 3ns and need to configure pwmgen to gove a 2kHz outout for a
commanded spindle speed of 4000rpm - equation to 10V output from my DAC.
Assuming no offsets is there a method for calcuating pwmgen.N.scale ? or is
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