On 8/2/24 12:23, Leonardo Marsaglia wrote:
Hello Gene, I hope you're doing well!
Here is a little footage of the fastest I've moved the X axis on the mazak:
https://youtube.com/shorts/fx6Elmy2GB4?si=oYQ7x1yheyhZOh5-
As a roughing cut thats pretty decent. Can your X move like that while
loaded with the grinders weight? My grinder is a 1/4 shank and several
lbs. With an 8mm x screw, that much weight would be pushing that screw
pretty hard.
Being almost a square and considering the circunscribed diameter is about
37 mm is pretty good. For the X axis I have a max speed of 500.0 mm/sec and
10000.0 mm/sec^2 of max acceleration. I kind of have to correct the jerk
for this axis because for some shapes I can notice it's a little too much.
But for the most part I'm ok with the way it works.
Yes, makes it look easy.
I have done that, but the spindle speed is suprisingly slow if X is slow.
Well, I'm designing this machine to have a slight better response than the
Mazak, but also being a grinding machine I don't really need that much RPMs
on the part spindle so for the majority of parts we make it will be ok.
I'll be posting videos as soon as the machine is ready!
I might add that my Sheldon is the first machine I put the
stepper/servo's on. They doubled the speeds.
El vie, 2 ago 2024 a las 12:55, gene heskett (<ghesk...@shentel.net>)
escribió:
On 8/2/24 10:52, gene heskett wrote:
On 8/2/24 05:45, Leonardo Marsaglia wrote:
So this would also work for a mill that has an AC Servo running
step/dir.
Once the motor is connected to the spindle with a toothed belt
rather than
V belt.
I must be missing some context here. I have been feeding back for
spindle speed control, an encoder generated ABX set of quadrature
signals generated by ats-667's which are watching the spindle backgear
teeth go by, for about a decade. What has the presence or absence of a
v-belt in the path got to do with it?.
Cool!
I have the same doubt about the kind of belt I should use. In theory,
several V belts well tensioned should work perfectly without slipping
and
the encoder on the spindle (this one of course coupled with a timing
belt)
should be able to keep up with the position and nothing should go wrong.
The lathes we have all work this way and I have never experienced belt
slipping. But for some reason I feel more confident using timing belts
all
the way. I don't know if this is an overkill and I should go with the
simpler V belts. Remember that this machine is going to be grinding cams
and eccentrics.
I have done that, but the spindle speed is suprisingly slow if X is slow.
El vie, 2 ago 2024 a las 6:33, Leonardo Marsaglia
(<ldmarsag...@gmail.com>)
escribió:
Thanks Andy for the link! Now it's time to play a little bit with the
config and make it work :)
El dom, 28 jul 2024 a las 6:21, andy pugh (<bodge...@gmail.com>)
escribió:
On Sat, 27 Jul 2024 at 18:41, Leonardo Marsaglia
<ldmarsag...@gmail.com>
wrote:
For this, I think I read there's a caxis.comp module that If I'm not
mistaken Andy wrote.
Is there a place to get that file? Because I couldn't find it yet.
https://forum.linuxcnc.org/10-advanced-configuration/42171-spindle-step-dir-servo-ramp-down-before-stop-on-m-stop-command?start=120#209694
--
atp
"A motorcycle is a bicycle with a pandemonium attachment and is
designed for the especial use of mechanical geniuses, daredevils and
lunatics."
— George Fitch, Atlanta Constitution Newspaper, 1912
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Cheers, Gene Heskett, CET.
Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
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_______________________________________________
Emc-users mailing list
Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
Cheers, Gene Heskett, CET.
--
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author, 1940)
If we desire respect for the law, we must first make the law respectable.
- Louis D. Brandeis
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Emc-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/emc-users
