epoxy granite cnc lathe

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29 Sep 2022 13:02 #253029 by Masiwood123
Replied by Masiwood123 on topic epoxy granite cnc lathe
..this would help me in practice, to be able to position the knife relative to the workpiece, at a certain angle.

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02 Oct 2022 20:46 - 02 Oct 2022 20:55 #253286 by Masiwood123
Replied by Masiwood123 on topic epoxy granite cnc lathe
jogging  youtube.com/shorts/ObnzluSeB4Q?feature=share
  MDI  youtube.com/shorts/PqXwrarzofU


today I installed the longitudinal axis, I have a problem, in long press jogging mode the machine skips, jumping (see screwdriver) no matter what the feed is, in MDI mode for example g1 z200 f1500 works smooth. I tried changing the acceleration, from 100-1000, at 100 (joint following error) between 100-1000 there is no error, but there is no difference either. Anyone with an idea what it could be? 
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Last edit: 02 Oct 2022 20:55 by Masiwood123.

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02 Oct 2022 21:08 #253288 by tommylight
Replied by tommylight on topic epoxy granite cnc lathe

I have a problem, in long press jogging mode the machine skips, jumping (see screwdriver) no matter what the feed is, in MDI mode for example g1 z200 f1500 works smooth.

That is a keyboard issue,
forum.linuxcnc.org/38-general-linuxcnc-q...elocity-fluctuations
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02 Oct 2022 21:24 #253289 by Masiwood123
Replied by Masiwood123 on topic epoxy granite cnc lathe
Hvala:)! I tried to add another keyboard (otherwise I use a wireless one), I also tried with a wired usb, it's the same. now I will read your answer and then I will try to solve it tomorrow and report back. thank you very much!
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03 Oct 2022 10:39 #253332 by Masiwood123
Replied by Masiwood123 on topic epoxy granite cnc lathe
Prblem resen sa ovim xset-r, kad dolazis na to pivo>!

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09 Oct 2022 13:51 #253808 by vre
Replied by vre on topic epoxy granite cnc lathe
Epoxy granite is perfect material but aluminum is not for this application.
All the machine mechanically is wrong except if you want something
that is more hobby toy-educational and not for real heavy work.

Best material for cnc is epoxy granite second best natural granite third cast iron
aluminum and steel are not good choice.
headstock is more weak than 500$ hobby Chinese lathes


Remove all aluminum and use epoxy granite-cast iron for headstock.
slant bed is best for cnc lathe not flat.
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09 Oct 2022 15:00 #253810 by Masiwood123
Replied by Masiwood123 on topic epoxy granite cnc lathe
I completely agree, casting iron absorbs vibrations the best...unfortunately, I don't have the conditions for it, nor does anyone in my area. I would be the happiest if I found some locatelli, for example, for a retrofit. by the way, what I am making is not for a hobby, but it is also not for metal or any such precise processing, I need it for some smaller series of some smaller wooden pieces. I will mainly use the headstock as an A axis, and as a spindle only at the end of the operation, for cutting pieces. In what sense do you think the headstock is not suitable? the shaft is fi 60mm with two bearings, with a 30mm adapter on the MT3.

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09 Oct 2022 16:07 #253812 by vre
Replied by vre on topic epoxy granite cnc lathe
if it is not for metal but for wood then its ok

for metal needs very strong headstock bed support etc

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09 Oct 2022 19:48 - 09 Oct 2022 19:51 #253821 by Bari
Replied by Bari on topic epoxy granite cnc lathe
forum.linuxcnc.org/30-cnc-machines/46765...lathe?start=0#250944

You must have missed this earlier in this discussion. Check out chapters 4 and 5 of the pdf.

forum.linuxcnc.org/30-cnc-machines/46765...athe?start=10#251650
Last edit: 09 Oct 2022 19:51 by Bari. Reason: more info
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16 Oct 2022 19:48 - 16 Oct 2022 19:49 #254253 by Masiwood123
Replied by Masiwood123 on topic epoxy granite cnc lathe
 day for mpg housing
       
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Last edit: 16 Oct 2022 19:49 by Masiwood123.
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