On Fri, 20 Jul 2012 13:05:22 -0500, you wrote:
Get well soon! If you feel like experimenting - I think you would just
change
net spindle-position encoder.0.position = motion.spindle-revs
to
net spindle-position encoder.0.position-interpolated = motion.spindle-revs
Thanks Sam - I'll give
On Fri, 20 Jul 2012 20:00:10 -0400, you wrote:
Sag is only the start of the problem. The whip is going to be the real
problem. The ballnut is no holp holding it up at the limits of travel.
Not strictly true - the size needs to be CAREFULLY calculated for the
job in hand and the mounting method
On 20.07.12 10:51, Gene Heskett wrote:
On Friday 20 July 2012 10:18:49 Erik Christiansen did opine:
Would it help if we again posted some advice on how to most easily
change the uids on one host to match another?
While that could I suppose be useful when the distro's involved are mix-n-
On 20.07.12 12:18, Jon Elson wrote:
Erik Christiansen wrote:
Would it help if we again posted some advice on how to most easily
change the uids on one host to match another?
Gee, something like :
sudo chown -Rf x:y directory
will do most of the job, then you need to make sure the
since you probably have a computer, you probably also already have a laser.
--- On Fri, 7/20/12, andy pugh bodge...@gmail.com wrote:
From: andy pugh bodge...@gmail.com
Subject: Re: [Emc-users] Linuxcnc 5 axis coolness
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
On 20.07.12 16:18, Jeshua Lacock wrote:
I am sure with a 10-foot span that the horizontal ballscrews will sag
a little from gravity. Is this much of a concern? Does anyone know of
a trick to put some kind of support in the middle of the span? I can't
think of any practical way.
One method
2012/7/21 Erik Christiansen dva...@internode.on.net:
In any event, I'd fix a long slender ballscrew, to avoid whipping, and
rotate the nut.
I did this on the last machine I built with this exact intention in my mind.
The overall result - failure. I seriously doubt I will ever do that again.
On 21 July 2012 05:21, Gene Heskett ghesk...@wdtv.com wrote:
It looks like I am stuck with the 3.5mm allen socket to drive this.
I can't help feeling that a Torx head would be easier to make,as it is
just about mill-able.
It might take some experimenting and tweaking (maybe in a block of
On Saturday 21 July 2012 06:55:06 Erik Christiansen did opine:
On 20.07.12 10:51, Gene Heskett wrote:
On Friday 20 July 2012 10:18:49 Erik Christiansen did opine:
Would it help if we again posted some advice on how to most easily
change the uids on one host to match another?
While
I don't know, I am not familiar with HID in linux. I would suggest
posting, or searching the MplabX
forumshttp://www.microchip.com/forums/f238.aspxfor this info, if you
can't get anywhere
On Fri, Jul 20, 2012 at 11:07 PM, Kent A. Reed kentallanr...@gmail.comwrote:
On 7/20/2012 10:10 PM,
On 21 July 2012 05:09, Jeshua Lacock jes...@3dtopo.com wrote:
550 RPMs does not exactly strike me as spinning at high speed. Besides,
wouldn't the gyroscopic force help stabilized oscillations?
No, centrifugal force acts as a positive feedback on any off-centre movement.
As Steve has said,
On 21.07.12 14:41, Viesturs Lācis wrote:
2012/7/21 Erik Christiansen dva...@internode.on.net:
In any event, I'd fix a long slender ballscrew, to avoid whipping, and
rotate the nut.
I did this on the last machine I built with this exact intention in my mind.
The overall result - failure.
For long machines where the cutting forces are not hugely significant (such
as a wood router) could one not used a aircraft cable setup? The cable
could then be run over a motorized pulley.
Something I always thought of but haven't fleshed it out further.
Brian
I am not sure what yo mean by preload/stretch though.
After installing the ballscrew you then put an indicator on the end of the
ball screw with the mag base on the machine base. You then tighten the
bearing preload until you see .007 to .009 stretch of the end of the
ballscrew. I don't know
Gene:
I'm not going to comment your recent emails because 1) I don't want to
take the time to understand the information scattered through them and
2) the result would be unreadable:-)
Assuming all hosts have the appropriate packages installed, some
thoughts are:
1) maybe this is all working
Hi Jeshua
I am sure with a 10-foot span that the horizontal ballscrews
will sag a little from gravity. Is this much of a concern?
I think for long screws it generally a good idea not to drive the
ball-screws, but the nut. While this will not reduce the sag you
mentioned, it will greatly
On 7/21/2012 8:42 AM, andy pugh wrote:
On 21 July 2012 05:09, Jeshua Lacock jes...@3dtopo.com wrote:
550 RPMs does not exactly strike me as spinning at high speed. Besides,
wouldn't the gyroscopic force help stabilized oscillations?
No, centrifugal force acts as a positive feedback on any
On 21.07.12 07:51, Gene Heskett wrote:
On Saturday 21 July 2012 06:55:06 Erik Christiansen did opine:
and seems to be reasonably talkative, even when things are going
well.
Not so much, but maybe a clue from service nfs-kernel-server restart:
Jul 21 06:53:30 coyote kernel: [69826.321565]
2012/7/21 Erik Christiansen dva...@internode.on.net:
Of the other machines that you've built, do any have a horizontal
ballscrew as long and slender as this one, spun at similar speeds?
That was the first time I used ballscrews, so I have no other
experiece to compare with.
For the next
On Saturday 21 July 2012 10:51:04 andy pugh did opine:
On 21 July 2012 05:21, Gene Heskett ghesk...@wdtv.com wrote:
It looks like I am stuck with the 3.5mm allen socket to drive this.
I can't help feeling that a Torx head would be easier to make,as it is
just about mill-able.
With sub
Jeshua Lacock wrote:
On Jul 20, 2012, at 6:00 PM, Stephen Dubovsky wrote:
Sag is only the start of the problem. The whip is going to be the real
problem.
Hi Stephen,
I am not sure I understand what you mean by whip?
Long, thin shafts tend to whip when spun at high speeds.
On Saturday 21 July 2012 11:37:54 andy pugh did opine:
On 21 July 2012 05:21, Gene Heskett ghesk...@wdtv.com wrote:
It looks like I am stuck with the 3.5mm allen socket to drive this.
I can't help feeling that a Torx head would be easier to make,as it is
just about mill-able.
It might
On Saturday 21 July 2012 11:45:42 andy pugh did opine:
On 21 July 2012 05:09, Jeshua Lacock jes...@3dtopo.com wrote:
550 RPMs does not exactly strike me as spinning at high speed.
Besides, wouldn't the gyroscopic force help stabilized oscillations?
No, centrifugal force acts as a positive
Jeshua Lacock wrote:
It looks like over a 10 foot span I have about 24mm (0.96 inches) of sag in
the middle.
10 foot span? 25 mm diameter? Oh, my, that sounds WAY past the safe range.
See http://www.nookindustries.com/ball/BallCalculators.cfm#CriticalSpeed
for a critical speed
Jeshua Lacock wrote:
On Jul 20, 2012, at 9:13 PM, Stuart Stevenson wrote:
Andy's solution is the correct solution. A string will fold under
compression. This will allow the supports to collapse together when the nut
moves their direction on the screw. The string will pull the supports
This web page has a chart for calculating the critical speed for ball screws:
http://www.roton.com/application_engineering.aspx
+++
We are like tenant farmers chopping down the fence around our house for
fuel when we
On Saturday 21 July 2012 11:53:33 Kent A. Reed did opine:
Gene:
I'm not going to comment your recent emails because 1) I don't want to
take the time to understand the information scattered through them and
2) the result would be unreadable:-)
Assuming all hosts have the appropriate
On 21 July 2012 16:44, Gene Heskett ghesk...@wdtv.com wrote:
And I just now did hit a page with some size specs. Looks like T15 is as
big as I can shoot for. The thru hole in the extension is a good fit for a
3.5 mm allen wrench.
Broach it hex then, it can't be _that_ hard.
Just don't do
All,
I installed a Axiom ax5214h card in my control. Since doing this
the Axis GUI will not start up in my config. TKEMC runs fine. Any help
would be appreciated.
Dave
--
Live Security Virtual Conference
On 21 July 2012 17:38, Dave Keeton pkeet...@woh.rr.com wrote:
All,
I installed a Axiom ax5214h card in my control. Since doing this
the Axis GUI will not start up in my config. TKEMC runs fine. Any help
would be appreciated.
Probably a graphics card or opengl issue, there are possible
On Saturday 21 July 2012 12:14:51 Erik Christiansen did opine:
On 21.07.12 07:51, Gene Heskett wrote:
On Saturday 21 July 2012 06:55:06 Erik Christiansen did opine:
and seems to be reasonably talkative, even when things are going
well.
Not so much, but maybe a clue from service
On Saturday 21 July 2012 12:55:27 andy pugh did opine:
On 21 July 2012 16:44, Gene Heskett ghesk...@wdtv.com wrote:
And I just now did hit a page with some size specs. Looks like T15 is
as big as I can shoot for. The thru hole in the extension is a good
fit for a 3.5 mm allen wrench.
On 7/21/2012 12:45 PM, andy pugh wrote:
On 21 July 2012 17:38, Dave Keeton pkeet...@woh.rr.com wrote:
All,
I installed a Axiom ax5214h card in my control. Since doing this
the Axis GUI will not start up in my config. TKEMC runs fine. Any help
would be appreciated.
Probably a graphics
On Sat, Jul 21, 2012 at 1:45 PM, Kent A. Reed kentallanr...@gmail.comwrote:
Rather, I'd have to ask what else was changed when the Axiom card was
installed? Call me an ornery cuss, but I suspect changes were made to
configuration files that interfere with Axis starting.
Logic dictates that
On 7/21/2012 2:57 PM, Eric Keller wrote:
On Sat, Jul 21, 2012 at 1:45 PM, Kent A. Reed kentallanr...@gmail.comwrote:
Rather, I'd have to ask what else was changed when the Axiom card was
installed? Call me an ornery cuss, but I suspect changes were made to
configuration files that interfere
On Sat, Jul 21, 2012 at 3:31 PM, Kent A. Reed kentallanr...@gmail.comwrote:
Agreed. It's also my first response to a problem. I haven't done my
homework to figure out what messages to expect from a balky Axis setup.
I figured the moment I said check dmesg output someone would ask what
to
On 21 July 2012 18:45, Kent A. Reed kentallanr...@gmail.com wrote:
Errm. Dave said Since doing this... which suggests Axis used to start
but doesn't start now that he has installed the Axiom card.
I was rather assuming that the Axiom card was a graphics card...
But if Axis doesn't start, but
On Fri, 20 Jul 2012 23:07:09 -0400
Kent A. Reed kentallanr...@gmail.com wrote:
On 7/20/2012 10:10 PM, Cathrine Hribar wrote:
On Mon, 16 Apr 2012 14:47:49 -0400
Erik Friesen e...@aercon.net wrote:
On Mon, Apr 16, 2012 at 2:33 PM, Dave e...@dc9.tzo.com wrote:
On 4/16/2012 1:15 PM,
On 7/21/2012 12:38 PM, Dave Keeton wrote:
All,
I installed a Axiom ax5214h card in my control. Since doing this
the Axis GUI will not start up in my config. TKEMC runs fine. Any help
would be appreciated.
Dave
Dave:
You've got a lively side-bar exchange going among Andy, Eric, and
On Sat, 2012-07-21 at 17:45 +0100, andy pugh wrote:
On 21 July 2012 17:38, Dave Keeton pkeet...@woh.rr.com wrote:
All,
I installed a Axiom ax5214h card in my control. Since doing this
the Axis GUI will not start up in my config. TKEMC runs fine. Any help
would be appreciated.
On 7/21/2012 4:46 PM, Cathrine Hribar wrote:
On Fri, 20 Jul 2012 23:07:09 -0400
Kent A. Reed kentallanr...@gmail.com wrote:
On 7/20/2012 10:10 PM, Cathrine Hribar wrote:
On Mon, 16 Apr 2012 14:47:49 -0400
Erik Friesen e...@aercon.net wrote:
On Mon, Apr 16, 2012 at 2:33 PM, Dave
On Sat, 2012-07-21 at 17:02 -0400, Kent A. Reed wrote:
On 7/21/2012 12:38 PM, Dave Keeton wrote:
All,
I installed a Axiom ax5214h card in my control. Since doing this
the Axis GUI will not start up in my config. TKEMC runs fine. Any help
would be appreciated.
Dave
Dave:
On 7/21/2012 5:24 PM, Dave Keeton wrote:
...
Sorry if I caused such an uproar just asking a simple question! GEEEZ
Guys! Just kidding.Yes I should have given more info as I knew
better being a service tech for CNC machines myself. Sorry, it wont
happen again! Turns out that long before I
On Jul 21, 2012, at 9:50 AM, Jon Elson wrote:
Jeshua Lacock wrote:
It looks like over a 10 foot span I have about 24mm (0.96 inches) of sag in
the middle.
10 foot span? 25 mm diameter? Oh, my, that sounds WAY past the safe range.
See
On Sat, 21 Jul 2012 17:15:32 -0400
Kent A. Reed kentallanr...@gmail.com wrote:
On 7/21/2012 4:46 PM, Cathrine Hribar wrote:
On Fri, 20 Jul 2012 23:07:09 -0400
Kent A. Reed kentallanr...@gmail.com wrote:
On 7/20/2012 10:10 PM, Cathrine Hribar wrote:
On Mon, 16 Apr 2012 14:47:49 -0400
On Sat, 21 Jul 2012 14:41:01 +0300, you wrote:
2012/7/21 Erik Christiansen dva...@internode.on.net:
In any event, I'd fix a long slender ballscrew, to avoid whipping, and
rotate the nut.
I did this on the last machine I built with this exact intention in my mind.
The overall result - failure.
Eric Keller wrote:
I'm guessing it has something to do with the real-time system not starting,
but who knows? In general, being able to diagnose using dmesg first
requires that one get used to seeing the output of dmesg.
OK, well, to us LinuxCNC insiders, Axis not starting is different
Kent A. Reed wrote:
Rather, I'd have to ask what else was changed when the Axiom card was
installed? Call me an ornery cuss, but I suspect changes were made to
configuration files that interfere with Axis starting.
Well, a very easy way to test it is to try to run glxgears. That may
On 21 July 2012 23:04, Jeshua Lacock jes...@3dtopo.com wrote:
At 5cm/rev that is 547 IPM. I think I could happily live with that.
That's a very high-lead ballscrew. I haven't seen any balls crews with
a pitch twice the diameter. Are you sure you are not a factor of 10
out?
--
atp
If you can't
On Jul 21, 2012, at 5:49 PM, andy pugh wrote:
On 21 July 2012 23:04, Jeshua Lacock jes...@3dtopo.com wrote:
At 5cm/rev that is 547 IPM. I think I could happily live with that.
That's a very high-lead ballscrew. I haven't seen any balls crews with
a pitch twice the diameter. Are you sure
On Sat, Jul 21, 2012, at 06:04 PM, Jeshua Lacock wrote:
Damn. Anyone want to buy two brand new ballscrews?
:D
Maybe I will use them on a laser cutter instead. High speed is not as
important to me on a laser cutter as it is on a 3D milling machine. Path
lengths are *much* longer doing
Have you considered rack and pinion for your machine. CNCrouterparts has a very
affordable solution:
http://www.cncrouterparts.com/rack-and-pinion-drive-nema-34-p-80.htmlI've not
used them but they have gotten good reviews from users at CNCzone and I've been
happy with other components of
On Jul 21, 2012, at 5:49 PM, andy pugh wrote:
On 21 July 2012 23:04, Jeshua Lacock jes...@3dtopo.com wrote:
At 5cm/rev that is 547 IPM. I think I could happily live with that.
That's a very high-lead ballscrew. I haven't seen any balls crews with
a pitch twice the diameter. Are you sure
On Jul 21, 2012, at 6:24 PM, John Kasunich wrote:
n Sat, Jul 21, 2012, at 06:04 PM, Jeshua Lacock wrote:
Damn. Anyone want to buy two brand new ballscrews?
:D
Maybe I will use them on a laser cutter instead. High speed is not as
important to me on a laser cutter as it is on a 3D
On Sat, 21 Jul 2012, John Kasunich wrote:
Date: Sat, 21 Jul 2012 20:24:22 -0400
From: John Kasunich jmkasun...@fastmail.fm
Reply-To: Enhanced Machine Controller (EMC)
emc-users@lists.sourceforge.net
To: Enhanced Machine Controller (EMC) emc-users@lists.sourceforge.net
Subject: Re:
Theres a commercial version of this or something very close (with I think
special belts) but my google foo is failing me now
Peter Wallace
Mesa Electronics
Ahh here it is:
http://bell-everman.com/products/linear-positioning/servobelt-linear-sbl
Peter Wallace
Mesa Electronics
I also remembered seeing a more commercial version of that somewhere,
but like you I couldn't find it. When I found that forum post I stopped
looking :)
On Sat, Jul 21, 2012, at 05:47 PM, Peter C. Wallace wrote:
Theres a commercial version of this or something very close (with I think
I recently picked up a couple Pittman ELCOM ST brushless servo motors.
I haven't been able to find data for the exact part number, but
everything
appear to match up with the N2311 with 18.3V windings as described in
this
data sheet:
On Jul 21, 2012, at 6:47 PM, Peter C. Wallace wrote:
Ahh here it is:
http://bell-everman.com/products/linear-positioning/servobelt-linear-sbl
Thats pretty cool.
I wonder what keeps the belts together? Gravity?
Cheers,
Jeshua Lacock
Founder/Engineer
3DTOPO Incorporated
http://3DTOPO.com
The idler pulleys push them together on either side of the pinion,
which is where the force is transferred from the upper belt to
the lower one. The lower one is glued to the machine frame along
its entire length, so the force is then transferred to the frame.
Neither belt has any significant
On Saturday 21 July 2012 22:14:28 Gene Heskett did opine:
On Saturday 21 July 2012 12:55:27 andy pugh did opine:
On 21 July 2012 16:44, Gene Heskett ghesk...@wdtv.com wrote:
And I just now did hit a page with some size specs. Looks like T15
is as big as I can shoot for. The thru hole
What about torch heating the end and hot forging with the (cold) driver of
your choice?
Perhaps start with a full depth pilot hole so the forging tool doesn't have
to displace as much material.
You could then quench and temper to preference.
Jason
On Jul 21, 2012 9:32 PM, Gene Heskett
On Saturday 21 July 2012 23:09:13 Jason Burton did opine:
What about torch heating the end and hot forging with the (cold) driver
of your choice?
Because the broach would be hot very fast. This actually works fairly well
cold except its pretty snug I have to get serious to get it bounced
andy pugh wrote:
On 21 July 2012 23:04, Jeshua Lacock jes...@3dtopo.com wrote:
At 5cm/rev that is 547 IPM. I think I could happily live with that.
That's a very high-lead ballscrew. I haven't seen any balls crews with
a pitch twice the diameter. Are you sure you are not a factor of
John Kasunich wrote:
I recently picked up a couple Pittman ELCOM ST brushless servo motors.
I haven't been able to find data for the exact part number, but
everything
appear to match up with the N2311 with 18.3V windings as described in
this
data sheet:
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