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Author Topic: Problems threading on the lathe  (Read 330276 times)

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Offline RICH

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Re: Problems threading on the lathe
« Reply #620 on: October 25, 2009, 04:13:03 PM »
No problem  at all Daniel. Fingers went into gear before brain interpreted your reply!   :D
RICH

Offline Dan13

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Re: Problems threading on the lathe
« Reply #621 on: October 26, 2009, 04:35:07 AM »
Sorry Rich, didn't mean to make it complicated :)

Daniel

Offline ART

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Re: Problems threading on the lathe
« Reply #622 on: October 26, 2009, 09:23:39 AM »
Rich:

  Yup, sounds as if correction badly affects things then. From .003 to .040 is quite a jump. Ill see what I can do this week..

Art

Offline RICH

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Re: Problems threading on the lathe
« Reply #623 on: October 26, 2009, 03:37:08 PM »
Thanks ART,
Look forward to the update.  Besides, winter is coming and Ruff Van Winkle "LazyTurn" will be waking up.
RICH

Offline ART

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Re: Problems threading on the lathe
« Reply #624 on: October 28, 2009, 03:00:01 PM »
Hi Rich:

  Didnt want to let you think I had forgotten you. I think Ive figured where the weird passes come from. The pitch is planned before motion, and it uses the speed at time of motion
to correct to.. Im making the application lock the planned pitch speed so that is what is used instead. Be a couple more days while I spit and glue the pieces together. I think this will
help greatly. It should in theory stop the weird passes which I think are occuring due to a slight RPM difference between the planner and whet the locked speed it set to.

Art

Offline RICH

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Re: Problems threading on the lathe
« Reply #625 on: October 28, 2009, 06:18:14 PM »
ART,
I just figured your having fun! Hope it's the culprit.
RICH

Offline ART

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Re: Problems threading on the lathe
« Reply #626 on: October 29, 2009, 09:21:24 PM »
Hi Rich:

  Well, I noted serious flaws in my correction logic as it WAS applied, and this test version is new code based on the time of plannng. I cant test this at the moment as I have too much going
on to fix up my rotation tester, so please try this in the air first to ensure I havent screwed up something basic. Its a lot of new code. It should plan a thread at a set rotation and then use that rotation
speed as the correction algorithms reference speed. It also keeps track of higher speeds to subtract from any correction done in slow speed situations.

 Let me know how it tests in the air if you can. You need the enclosed driver and exectuable to try this one.

Thx
Art

Offline RICH

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Re: Problems threading on the lathe
« Reply #627 on: October 29, 2009, 11:17:29 PM »
ART,
Will check it out tomorrow and post.
RICH

Offline RICH

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Re: Problems threading on the lathe
« Reply #628 on: October 30, 2009, 12:56:17 AM »
ART,
No rpm shows in the DRO. The index is sensed in diagnostics. The threading diagnostics will give rotation realtime speed but the spindle rotation is not sensed.    Thus can't do any threading. 
Axis will jog, step , and MPG's work.
RICH

Offline ART

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Re: Problems threading on the lathe
« Reply #629 on: October 30, 2009, 01:49:18 AM »
Rich:

  Sorry about that. This one should fix that, if not turn off or delete the advanced threading plugin, it may affect the reading by zeroing one of my var's..

Art