It has been a long time but I just wanted to let everyone know what the
outcome of very lengthy and thorough tests has shown. Well I tied and
measured all the suggested solutions - than you for everyone that
helped. In the end we discovered that due to the beams being clamped by
means of hydrau
Here is a complete ER20 ATC spindle:
http://www.automationtechnologiesinc.com/products-page/cnc-spindle/atc-spindle-2
+++
"Anyone who believes exponential growth can go on forever in a finite world is
either a madman or a
Hi,
so, I gut sinusoidal commutation working again. The init procedure is
executed properly and the PWM signals look nice an smooth.
Only problem left (right now): Almost no Torque. Feels like a current
limitation kicks in around 800mA at a PWM duty cycle of 0.15 or so.
But I'll investigate that
Hi,
Take a look at this one .
http://www.youtube.com/watch?v=RzR6L3lEXdM
It is er 16 and there is a limit to how fast you can turn the spindle.
But a great idea.
Jim
On 06/10/2013 06:49 PM, Viesturs Lācis wrote:
> Hello!
>
> I built a wood router a while ago and now I am a
We have an LPKF circuit board milling machine with
automatic tool change. The tools are lined up in a row in
spring loaded holders, and have some means of gripping the
collet nut while slowly rotating the spindle to tighten or
loosen the nut (at least that is how it appears to work).
I haven't dis
Hi Andy
>> By the way. I only found a man page on bldc and the pages in
>> the wiki, is there any documentation that I'm missing.
>
> I started to write a Wiki page, then didn't finish it. Maybe one
> day i will remember to get back to it.
You are talking about this page:
http://wiki.linuxcnc.
On 10 June 2013 23:49, Viesturs Lācis wrote:
> Currently it has spindle motor with ER20 collet at the end of motor shaft.
> I searched the web for some kind of upgrade kits, but all I could find was
> for Kress motors.
I think that it might be difficult to engineer. I might have seen
something,
Hello!
I built a wood router a while ago and now I am asked to provide an offer to
implement automatic tool change on that machine.
Currently it has spindle motor with ER20 collet at the end of motor shaft.
I searched the web for some kind of upgrade kits, but all I could find was
for Kress motor
On Monday 10 June 2013 14:07:11 Gene Heskett did opine:
> On Monday 10 June 2013 10:05:54 dave did opine:
> > On Sun, 2013-06-09 at 22:05 -0400, Kent A. Reed wrote:
> > > On 6/9/2013 9:08 PM, Jon Elson wrote:
> > > > Gene Heskett wrote:
> > > >> Looking at its voltage output, with the motor disabl
On 10 June 2013 16:49, Florian Rist wrote:
> Almost, the 'hi' and 'low' parts are not constant as in the ASCII Art,
> but show some modulation looking somewhat like sinus half-waves.
That may depend on your font choices...
Anyway, if the motor is running badly it is likely to be mirrored in
the
The jog-it is an open source project, so you can reprogram it any way you
like.
I agree with you about the home function, and have changed it on my unit.
(I was one of hte kickstarter investors).
Ray
--J. Ray Mitchell Jr.
jrmitche...@gmail.com
(818)324-7573
“Truth is treason in the Empire of Li
On Mon, 10 Jun 2013 15:32:34 +0200
Sven Wesley wrote:
> I would love to have a reason for southern Germany. :)
Any time frame on this? I live in the US and have never been overseas,
but this sounds like a good time to me ;) If you are thinking about
next week or next month, that's too soon for m
Hi Andy
>> the PWM signal for phase A is no longer a sinus
>> wave as it used to be, but looks almost rectangular:
>
>> +--+ +---+ +---+
>> | | | | | |
>> -+ +--+ +--+ +--+ +--+ +--+ +
On 10 June 2013 13:44, Florian Rist wrote:
> I began to set things up by looking up the pattern (3 in my case)
I have never had much luck picking the pattern with science.
However, if it ran smoothly and symmetrically in both directions in
"h" mode then it seems like that probably is the right p
On 6/10/2013 10:50 AM, Sven Wesley wrote:
> 2013/6/2 Bruce Layne:
>
>> I highly recommend the JogIt! pendant.
>>
> They sure look really fine, but I still don't like the idea of having
> the home button being the largest most centric object on the pendant.
> Homing is made once, zeroing w
2013/6/2 Bruce Layne :
> I highly recommend the JogIt! pendant.
They sure look really fine, but I still don't like the idea of having
the home button being the largest most centric object on the pendant.
Homing is made once, zeroing would have been much more logical to me.
But I'm willing to buy a
The other solution is to fix the PWM circuit so it has a linear PWM/voltage
transfer function. This is not difficult (even 12 bit linearity is possible
with little fussyness), it requires:
1. Good low delay isolators (and low delay in all PWM signal path) so PWM
width is not distorted
2. Symme
On Monday 10 June 2013 10:05:54 dave did opine:
> On Sun, 2013-06-09 at 22:05 -0400, Kent A. Reed wrote:
> > On 6/9/2013 9:08 PM, Jon Elson wrote:
> > > Gene Heskett wrote:
> > >> Looking at its voltage output, with the motor disabled so there is
> > >> no feedback,off = 0.125 volts
> > >> click
On Monday 10 June 2013 09:00:19 andy pugh did opine:
> On 10 June 2013 02:43, Gene Heskett wrote:
> > even, for about 20 minutes, tried to learn what the pwmgen module
> > might be able to do in the PDM mode, but it seemed even harder to
> > control then. The man page tells you how to put it in t
On Sun, 2013-06-09 at 22:05 -0400, Kent A. Reed wrote:
> On 6/9/2013 9:08 PM, Jon Elson wrote:
> > Gene Heskett wrote:
> >> Looking at its voltage output, with the motor disabled so there is no
> >> feedback,off = 0.125 volts
> >> click fwd button= 0.382diff= 0.257
> >> click + button
2013/6/7 Christian Stöveken
> Hello all.
>
>
> Is there a LinuxCNC integrator workshop planned in/around Germany within
> the next year or so?
> If not - are there people interested in attending/getting an integrator
> meeting up?
>
This sounds really tempting! Southern germany is a long drive,
I would love to have a reason for southern Germany. :)
/Sven
2013/6/7 Alex Joni :
> Stuttgart sounds doable for me too.
>
> Alex
>
> -Original Message-
> From: Martin Schöneck
> Sent: Friday, June 07, 2013 10:55 PM
> To: emc-users@lists.sourceforge.net
> Subject: Re: [Emc-users] LinuxCNC
Hi,
I'm have some strange problems in tuning a servo (5i23 + 7i39).
The strange thing is, it worked yesterday and for a while today, but it
doesn't work anymore. I guess I changed some parameters and ruined my setup.
I began to set things up by looking up the pattern (3 in my case) and
running in
On 10 June 2013 02:43, Gene Heskett wrote:
> even, for about 20 minutes, tried to learn what the pwmgen module might
> be able to do in the PDM mode, but it seemed even harder to control then.
> The man page tells you how to put it in that mode, but leaves you on your
> own to determine how it act
On Monday 10 June 2013 04:25:17 Gene Heskett did opine:
Update, big math error discovered while sleeping on it.
> Let me talk to myself & you eavesdrop.
>
> Lets consider a D/A consisting of an LM2907 to derive the controlling
> voltage.
>
> What have we got to play with in a .hal module?
>
>
On 10 June 2013 02:43, Gene Heskett wrote:
> That Andy, would need a lot better man page description than what I can
> 'read between the lines' and pull out. Probably my fault, but lots of our
> man pages are wanting in that dept. The commandment to make it fit on one
> monitor screen results a
On 10 June 2013 08:19, Steve Blackmore wrote:
> To be honest, in practical terms it matters little if the speed isn't
> exact for most machining purposes.
Ah, yes, a good point and why I haven't actually bothered to re-enable
the closed loop control on my lathe spindle (after I disabled it due
t
On Sun, 09 Jun 2013 18:14:16 -0500, you wrote:
>On 9 June 2013 23:05, Gene Heskett wrote:
>
>>
>>> However, with the motor driver disconnected so there is no input from the
>>> encoder, the output voltage steps at the C41 output aren't truly linear
>>> either.
>>>
>Do you know that the C41 i
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