> I assume you have a similar, fixed position spindle lock? I had to make
> mine.
Nope. As a friend said the other day when I asked if he'd found a lock on
his... "I use a big hammer on the supplied wrench to tighten or loosen it".
He's since carved a 3/4" hex head on his and is now using his
On 11/21/21 9:24 PM, John Dammeyer wrote:
I'm running my AC Servo spindle motor as step/dir and can easily tell LCNC to
do 1 RPM. I also have the quadrature encoder on it so I can do power tapping.
The drive is through the MESA 7i92H as one of the stepper channels as is the
encoder signal
On Monday 22 November 2021 00:24:40 John Dammeyer wrote:
> I'm running my AC Servo spindle motor as step/dir and can easily tell
> LCNC to do 1 RPM. I also have the quadrature encoder on it so I can
> do power tapping. The drive is through the MESA 7i92H as one of the
> stepper channels as is t
I'm running my AC Servo spindle motor as step/dir and can easily tell LCNC to
do 1 RPM. I also have the quadrature encoder on it so I can do power tapping.
The drive is through the MESA 7i92H as one of the stepper channels as is the
encoder signals.
Is there a way to tell the spindle to tur
An update...
I spent the afternoon tweaking software and air pressure etc. Still haven't
been able to get the 3/8" impact deep socket from falling off. The dimple in
the drive is deeper and the set screw definitely locks tight but after a few
cycles the screw is loose again. Eventually the soc
you could try putting the air valve "very close" to the inpact.
this will reduce the air volume betwen the valve and inpact.
a valve that closes when off, creating a vacuum in the inpact input line.
this vacuum may help control the inpact over run.
low input hose volume and a vacuum when shut
Quick test seems to be
2000rpm at about 111v
.4ft-lbs per amp. (8ft-lbs at 20a)
On Wed, Nov 10, 2021, 9:07 AM Jon Elson wrote:
> On 11/9/21 8:46 PM, Sam Sokolik wrote:
> > Anyone have specs on this brushed servo from the 70's?
> >
> Arrgh! These Gettys motors were designed to use power
> tr
On Sunday 21 November 2021 03:24:24 John Dammeyer wrote:
> Actually that is along the lines of what I've asked. Some sort of
> brake that could limit the speed.
>
> If you go back to steam engines the two weights swung out and shut off
> the pressure to the engine to keep it from running away. I
electric baby.
$99 + shipping
https://www.ebay.com/itm/Black-Decker-2211-Type-6-Electric-Impact-Wrench-Yamazen-CNC-Vertical-Mill/124224993932?epid=17039113677&hash=item1cec62fa8c:g:3MwAAOSw7P1e6KY9&pageci=fbda9f54-d12f-4a6f-b70c-dd849f2ac1b7&redirect=mobile
On Sunday, November 21, 2021, 02:
On Sunday 21 November 2021 02:40:39 John Dammeyer wrote:
> Has anyone ever tried any sort of closed loop control of an air motor
> similar the one on this butterfly impact wrench.
> https://www.penntoolco.com/52-424-9/
> In order to not have both the TTS and R8 collet drop out of the
> spindle I'd
Rather than the hard to control air wrench have you considered using a small DC
motor with an encoder and gear reduction? Some years ago there was a lengthy
series of posts on CNCZONE about such a system.
-Original Message-
From: John Dammeyer
Sent: November 21, 2021 2:41 AM
To: Enhanc
How about an eddy current magnetic speed brake? Powerful magnets moving close
to a thick piece of copper ought to do it.
https://www.youtube.com/watch?v=sENgdSF8ppANo power required, the right design
should bring the impact wrench to a fast stop once the air is off.
On Sunday, November 21, 2
On Sun, 21 Nov 2021 at 07:45, John Dammeyer wrote:
> In order to not have both the TTS and R8 collet drop out of the spindle I'd
> like to be able to limit the number of turns to 2.
How about an end-stop in the draw bar? It would be fairly easy to have
something that simply "catches" the collet
Actually that is along the lines of what I've asked. Some sort of brake that
could limit the speed.
If you go back to steam engines the two weights swung out and shut off the
pressure to the engine to keep it from running away. I'm not sure I could fit
something like that in that space but I
It's not what you asked, but what about a centrifugal clutch/limiter?
Above say 200RPM it could swing outwards and lock, only releasing again
once the torque is removed.
On Sun, 21 Nov 2021 at 09:45, John Dammeyer wrote:
> Has anyone ever tried any sort of closed loop control of an air motor
>
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