the option I just thought of while googling is, can I convert the sin cos
format in to a normal TTL or something like that? even 1000 ppr would be
heaps it is only on the spindle.
I just want to get the data into the vfd so It knows when the motors is
slowing down. and so I can rigid tap and
Hi guys
wondering if anyone has any ideas here.
I have a heidanhain spindle motor that runs up to 1 rpm and has a 5v
sin cos encoder on it. I am currently controlling the motor with a
schiender vfd. I am talking to the support engineers here in New Zealand
about buying a encoder card so I
On Tuesday 11 February 2020 21:55:55 Jon Elson wrote:
> On 02/11/2020 12:27 PM, Gene Heskett wrote:
> > What sort of glue can I use that can withstand an oily environment
> > of light 00w20 for many years?
>
> I used either PC-7, in the red and black metal cans. I have
> not had any problems so
On 2020-02-05 01:57, andy pugh wrote:
On Wed, 5 Feb 2020 at 04:25, Thomas D. Dean wrote:
How do I do a clean install of buster rtai and llinuxcnc?
Experimental at the moment. But:
1) Install Buster
2) Download the .debs at www.linuxcnc.org/temp
3) Install the Linux-image and Linux-headers
On 02/11/2020 12:27 PM, Gene Heskett wrote:
What sort of glue can I use that can withstand an oily environment of
light 00w20 for many years?
I used either PC-7, in the red and black metal cans. I have
not had any problems so far.
Jon
___
On Tuesday 11 February 2020 20:17:12 dave engvall wrote:
> I like the idea of iso-propanol. The only thing that would improve the
> process is vapor degreasing. The trick of a non-filled epoxy as a
> primer is good. Why didn't I think of that. ;-)
>
> The Navy uses acetone for degreasing before
On Tuesday 11 February 2020 19:38:01 Bruce Layne wrote:
> > On Tue, Feb 11, 2020 at 10:30 AM Gene Heskett
> >
> > wrote:
> >> Cleaned up with acetone of course.
>
> Cleaning with acetone will result in a good epoxy bond. Cleaning with
> isopropyl alcohol will result in an excellent epoxy bond.
I like the idea of iso-propanol. The only thing that would improve the
process is vapor degreasing. The trick of a non-filled epoxy as a primer
is good. Why didn't I think of that. ;-)
The Navy uses acetone for degreasing before using loc-tite on their
nuclear stuff. Degrease, blow dry, add
I have never tested WB Weld with a magnet. I have a bunch of powerfull
magnets around and never thought to see if one would stick to a tube of JB
Weld.
But I've used other epoxy systems. You can mix many things with epoxy, up
to over 80% by volume and the composite is MUCH stronger than pure
> On Tue, Feb 11, 2020 at 10:30 AM Gene Heskett
> wrote:
>
>> Cleaned up with acetone of course.
Cleaning with acetone will result in a good epoxy bond. Cleaning with
isopropyl alcohol will result in an excellent epoxy bond. Commercial
acetone, at least in the US, is recovered from
Hey Todd.
Was there a reason you went to a 7i85 rather than a 7i76 and 7i84?
All I can think of is you didn't need the extra io of the 7i76. So could
do it with only two cards.
Regards
Andrew
On Wed, Feb 12, 2020, 3:11 AM Todd Zuercher wrote:
> I'm using a 5i25+7i85s to run a large gang
If " 'nix" were suddenly removed from the world the internet and a whole
bunch of other thing would disappear.
Just to rock the boat: mesa (PCW) has a very nice motion controller for
an FPGA. 50 us cycle time, etc. "ALL" someone has to do is wrap interp
and all the other non-motion stuff
AFIK Araldite is a non-filled epoxy. I've always taken that as the Brit
name for plain epoxy. OTOH JB also make a clear 5 min expoy as do
others. I grew up with a quart of (Shell at the tme) Epon828 in the
cupboard. Handy stuff. I once mixed an epoxy using tri-mellitc (sp??)
anhydride as a
Yep! As long as your environment doesn't have chlorinated solvents you
are OK. Even my Ace Hdwe carries it.
Dave
On 2/11/20 10:34 AM, Chris Albertson wrote:
"JB Weld" Epoxy. It is a mixture of two part epoxy and steel powder. Get
it at any auto parts store or Home Depot.
On Tue, Feb 11,
Maybe it's a little like this. Linuxcnc is a bit like an Amphicar. Maybe not
the greatest car or the greatest boat, but to break one apart into a separate
car and boat (or make it only usable as one or the other) would make it less
than it is as a whole. (I know the analogy breaks down where
On 2/11/20 2:53 PM, Gene Heskett wrote:
> On Tuesday 11 February 2020 13:34:29 Chris Albertson wrote:
>
>> "JB Weld" Epoxy. It is a mixture of two part epoxy and steel powder.
>> Get it at any auto parts store or Home Depot.
>>
> It it magnetic enough to fool an ATS-667? Thats been the
You care where the loop are because if they are in your PC you need a
special PC with a special OS. But look at how most 3D printers work.
They are just like 4 axis milling machines, typically using 4 stepper
motors and no one needs a special PC or OS to make prints. In all cases
the designers
On Tuesday 11 February 2020 14:20:01 Marcus Bowman wrote:
> On 11 Feb 2020, at 18:34, Chris Albertson wrote:
> > "JB Weld" Epoxy. It is a mixture of two part epoxy and steel
> > powder. Get it at any auto parts store or Home Depot.
> >
> > On Tue, Feb 11, 2020 at 10:30 AM Gene Heskett
wrote:
On Tuesday 11 February 2020 13:34:29 Chris Albertson wrote:
> "JB Weld" Epoxy. It is a mixture of two part epoxy and steel powder.
> Get it at any auto parts store or Home Depot.
>
It it magnetic enough to fool an ATS-667? Thats been the reason I
haven't tried it. I have some but it could be
On 11 Feb 2020, at 18:34, Chris Albertson wrote:
> "JB Weld" Epoxy. It is a mixture of two part epoxy and steel powder. Get
> it at any auto parts store or Home Depot.
>
> On Tue, Feb 11, 2020 at 10:30 AM Gene Heskett wrote:
>
>>
>>
>> What sort of glue can I use that can withstand an
> While I don't have a problem with separating the motion control and the HMI
> hardware. (it is how most commercial CNCs have done it for the past 30 years
> or more.)
Have an old Sodick wire EDM built this way and think it is a rather good idea
though which components are readily available
"JB Weld" Epoxy. It is a mixture of two part epoxy and steel powder. Get
it at any auto parts store or Home Depot.
On Tue, Feb 11, 2020 at 10:30 AM Gene Heskett wrote:
> Greetings all;
>
> I went tp play with the lathe after reboot the rpi4 with cpu_freq raised
> to 800 megs.
>
> All of a
Greetings all;
I went tp play with the lathe after reboot the rpi4 with cpu_freq raised
to 800 megs.
All of a sudden the spindle tach got noisy, then quit. removeing the
heads lid, I could see a good coat of the 5w20 I've been useing for
spindle oil had flung out of the side face of the
While I don't have a problem with separating the motion control and the HMI
hardware. (it is how most commercial CNCs have done it for the past 30 years
or more.) But being more like a printer isn't a good thing. I've used CNCs
whose controls are set up very similar to how a printer works,
On Tuesday 11 February 2020 08:14:30 Les Newell wrote:
> > What I really
> > meant was that with a printer, all the critical timing happens in
> > the printer. There are no servo-loops on the PC and you don't need
> > a real-time OS to print to paper.
>
> Who cares where the servo loops or
I'm using a 5i25+7i85s to run a large gang router with step/dir servos. This
machine has a lot of mechanical warts that have made getting a good tune on the
servos difficult. Having the encoder feedback made tuning a little easier, and
saves me from having to break out the o-scope to work on
What I really
meant was that with a printer, all the critical timing happens in the
printer. There are no servo-loops on the PC and you don't need a real-time
OS to print to paper.
Who cares where the servo loops or trajectory planning are? When the end
user presses a button to move the
I said people *want* to use CNC like a laser printer. Most setups are
not that good. It is a goal and if designing a new system. It is good to
set the bar high and try to do what can't be done today.What I really
meant was that with a printer, all the critical timing happens in the
Maybe WiFi for network connectivity to the outside world.I find WiFi is
fast enough that I can NFS mount my files from a server and not have to
store them locally on the Pi.
Unlike older Pi3, the Pi4 has very good networking and also very fast USB3
On Mon, Feb 10, 2020 at 8:29 AM andy pugh
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