The old lathe retrofit project is coming together. This is the machine that
I ended up using Yaskawa Sigma 5 servos with 8i20 drives. It is an old old
Miyano gang lathe.
Here is a picture of a tool holder that came with it. I can't figure out
what it is and I was wondering if anyone knows what it
On Tue, 26 May 2020 at 15:35, Curtis Dutton wrote:
> Here is a picture of a tool holder that came with it.
I don't think that photos come through on the mailing list.
You use Gmail, so should be able to host and share the photo on
photos.google.com
--
atp
"A motorcycle is a bicycle with a
On Tuesday 26 May 2020 15:55:36 N wrote:
> > ...
> > I just tried an experiment. Since there are no pid's in that
> > sheldon setup, I commented out the *ERROR entries in the .ini file.
> > Interesting as it made zero difference in how it ran. So, it appears
> > that I'll need to synth an error
On Tuesday 26 May 2020 16:29:17 Chris Albertson wrote:
> Gene,
>
> I'm also looking at using a closed-loop stepper for a z-axis drive.
> On my system the z-motor's torque holds the full weight of the head.
> With a standard open loop motor full current is used and the motor
> gets hot because
On Tue, 26 May 2020 at 19:45, Gene Heskett wrote:
> I just tried an experiment. Since there are no pid's in that sheldon
> setup, I commented out the *ERROR entries in the .ini file. Interesting
> as it made zero difference in how it ran.
That probably means that the default values are large.
On Tuesday 26 May 2020 11:55:05 Jon Elson wrote:
> On 05/25/2020 07:43 PM, Gene Heskett wrote:
> > Without PID's, where do we get a following error that we
> > can see on the halscope?
>
> OK, WITHOUT a PID, then the step generators have a maximum
> speed, set by (possibly)
> BASE_PERIOD,
On Tue, May 26, 2020 at 3:01 PM Gene Heskett wrote:
>
> Those closed loop motors and controllers have arrived, and I puzzled by a
> total lack of docs other than the u-step ratios printed on the cover.
> Thats covered by dip sw1-4, but its a 6 pos switch, and 5 & 6 are in
> Chinese pictograms.
On 05/25/2020 07:43 PM, Gene Heskett wrote:
Without PID's, where do we get a following error that we
can see on the halscope?
OK, WITHOUT a PID, then the step generators have a maximum
speed, set by (possibly)
BASE_PERIOD, step_width and step_space. If you set maximum
velocity in the ini file
Gene,
I'm also looking at using a closed-loop stepper for a z-axis drive.On
my system the z-motor's torque holds the full weight of the head. With a
standard open loop motor full current is used and the motor gets hot
because there is more current than needed. The closed loop system puts
> ...
> I just tried an experiment. Since there are no pid's in that sheldon
> setup, I commented out the *ERROR entries in the .ini file. Interesting
> as it made zero difference in how it ran. So, it appears that I'll need
> to synth an error signal, and the best way I can think of it to
On Monday 25 May 2020 20:43:45 Gene Heskett wrote:
> On Monday 25 May 2020 18:33:29 Jon Elson wrote:
> > On 05/25/2020 02:50 PM, N wrote:
> > > Do anyone here have any suggestion for FERROR and MIN_FERROR
> > > values?
> >
> > It depends on your "user units", as well as the general
> > accuracy
> > Do anyone here have any suggestion for FERROR and MIN_FERROR values?
> >
> It depends on your "user units", as well as the general
> accuracy and speed of the machine.
Unit is not important just have know which is used and do conversion from inch
to mm if necessary. Try to figure out what
On Tue, 26 May 2020 at 17:16, Curtis Dutton wrote:
> https://drive.google.com/file/d/1A4zx2k4i04BCbur2fUuA0I2t8Df3C7TY/view?usp=sharing
There might be some leads here:
https://www.hobby-machinist.com/threads/identify-a-lathe-toolpost-with-reverse-dovetail.63448/
But whether any are the same
Apologies.
https://drive.google.com/file/d/1A4zx2k4i04BCbur2fUuA0I2t8Df3C7TY/view?usp=sharing
On Tue, May 26, 2020 at 10:45 AM andy pugh wrote:
> On Tue, 26 May 2020 at 15:35, Curtis Dutton wrote:
>
> > Here is a picture of a tool holder that came with it.
>
> I don't think that photos come
On Mon, May 25, 2020 at 9:02 AM R C wrote:
> I actually saw a youtube video where someone was using this chip. I
> believe he said it was like $28, and you'd still need something to read/run
>
I buy them for about $3 each
ebay.com/itm/1PC-STM32F103C8T6-ARM-STM32
Hello to all,
I've been playing and turning several pieces so far but I'm curious about
what I did today.
I have set 3 tools on the turret that are the ones I use more often (5 mm
grooving tool and left and right VBMT facing tools). So whenever I turn a
new part, I only change the G54 offset for
On Tuesday 26 May 2020 19:45:10 Chris Albertson wrote:
> On Tue, May 26, 2020 at 3:01 PM Gene Heskett
wrote:
> > Those closed loop motors and controllers have arrived, and I puzzled
> > by a total lack of docs other than the u-step ratios printed on the
> > cover. Thats covered by dip sw1-4,
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