On 02/05/2021 01:35 PM, Gene Heskett wrote:
On Friday 05 February 2021 13:53:44 Jon Elson wrote:
On 02/05/2021 10:07 AM, Gene Heskett wrote:
You have my curiosity bump itching Jon, When I get my stuff back
together on the GO704, and get my new 'scope unpacked, I'll take a
look at the step
On 02/05/2021 01:11 PM, johnd wrote:
What's the resolution of your spindle encoder and base period servo period?
There is no base thread on this servo system. The servo
thread runs at 1 KHz.
The spindle encoder uses the bull gear in the mill's head,
so it has 324 counts/rev.
Jon
Boy my Samsung phone doesn't format messages very well for this group.
OK. So I'll ask again. If you'd done tapping or threading with LinuxCNC:
1. What resolution encoder are you using?
2. What is the BASIC_PERIOD?
3. What is the SERVO_PERIOD?
Thanks
John Dammeyer
On Friday 05 February 2021 13:53:44 Jon Elson wrote:
> On 02/05/2021 10:07 AM, Gene Heskett wrote:
> > You have my curiosity bump itching Jon, When I get my stuff back
> > together on the GO704, and get my new 'scope unpacked, I'll take a
> > look at the step drive output and answer that itch.
>
What's the resolution of your spindle encoder and base period servo period?Sent
from my Samsung S10
Original message From: Jon Elson
Date: 2021-02-05 10:56 a.m. (GMT-08:00) To: "Enhanced Machine Controller
(EMC)" Subject: Re: [Emc-users] Spindle speed
changes with
On 02/05/2021 11:03 AM, John Dammeyer wrote:
Hi Gene,
But it's also been reported that with LinuxCNC it's possible to stop the
spindle while still in Threading Mode and then turn the spindle by hand and the
carriage will follow. This is of course on a lathe. Not something you'd do on
a mill
On 02/05/2021 10:07 AM, Gene Heskett wrote:
You have my curiosity bump itching Jon, When I get my stuff back together
on the GO704, and get my new 'scope unpacked, I'll take a look at the
step drive output and answer that itch.
You actually should be able to check this out with
Halscope. Look
On Friday 05 February 2021 12:03:48 John Dammeyer wrote:
> Hi Gene,
> But it's also been reported that with LinuxCNC it's possible to stop
> the spindle while still in Threading Mode and then turn the spindle by
> hand and the carriage will follow. This is of course on a lathe. Not
> something
Thanks Les. That's good to know. What's the resolution of your spindle
encoder? How are you detecting this with LinuxCNC? A MESA card or PP? What's
the BASE_PERIOD and the SERVO_PERIOD set in the INI file?
Thanks
John
> -Original Message-
> From: Les Newell
> From: Jon Elson [mailto:el...@pico-systems.com]
> On 02/05/2021 03:15 AM, Gene Heskett wrote:
> > On Friday 05 February 2021 02:57:38 John Dammeyer wrote:
> >
> >> Granted this subject is a bit old I've now had some time to dive back
> >> into the TI F2837xD which has dual processors and other
Hi Gene,
But it's also been reported that with LinuxCNC it's possible to stop the
spindle while still in Threading Mode and then turn the spindle by hand and the
carriage will follow. This is of course on a lathe. Not something you'd do on
a mill I think.
The question then becomes what is
I just tried it on my lathe. I scratch cut a coarse pitch thread at low
spindle speed then repeated the cut at about twice the spindle speed. I
ended up with two distinct threads. The moral of the story is to make
sure your spindle speed is stable before starting threading.
Les
On Friday 05 February 2021 10:27:30 Jon Elson wrote:
> On 02/05/2021 03:15 AM, Gene Heskett wrote:
> > On Friday 05 February 2021 02:57:38 John Dammeyer wrote:
> >> Granted this subject is a bit old I've now had some time to dive
> >> back into the TI F2837xD which has dual processors and other
>
On 02/05/2021 03:15 AM, Gene Heskett wrote:
On Friday 05 February 2021 02:57:38 John Dammeyer wrote:
Granted this subject is a bit old I've now had some time to dive back
into the TI F2837xD which has dual processors and other features that
will make it a good test bed for trying out stuff.
On Friday 05 February 2021 02:57:38 John Dammeyer wrote:
> Granted this subject is a bit old I've now had some time to dive back
> into the TI F2837xD which has dual processors and other features that
> will make it a good test bed for trying out stuff.
>
> It has a hardware Quadrature Encoder
Granted this subject is a bit old I've now had some time to dive back into the
TI F2837xD which has dual processors and other features that will make it a
good test bed for trying out stuff.
It has a hardware Quadrature Encoder Interface (QEI) so theoretically I should
be able to grab
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