suntravel wrote: ↑Thu Mar 31, 2022 3:30 pm
Today I set up an automatic tool measuring with a modified 3D probe. Way faster than skim cuts, under 30s per tool and ready to go
Uwe
Where did you get the tool probe? I hate the skim cut method.
I set up a circuit that turns on a light bulb when the tool makes contact with the stock on my lathe for setting tools to make it a little easier. Basically just a continuity tester. Not sure how repeatable it will be but seems to work in testing, I have not used it in practicality yet.
Can you provide a link to this probe?
(Note: Liking will "up vote" a post in the search results helping others find good information faster)
BillB wrote: ↑Fri Apr 22, 2022 5:38 pm
Where did you get the tool probe? I hate the skim cut method...
The probe will get you close, but it doesn't account for tool push off, part deflection, and slop in the machine ways. If you are shooting for a couple of thousandths or less, you'll still end up making a skim cut at some point and adjusting your offset values.
Cheers,
Tom
Confidence is the feeling you have before you fully understand the situation.
I have CDO. It's like OCD, but the letters are where they should be.
(Note: Liking will "up vote" a post in the search results helping others find good information faster)
The Probe is a cheap chinese 3D probe with NPN circuit and a tip I made for the lathe.
Tom is right, for some cases you will have to adjust after probing if the part and the machine are not very rigid.
But a shallow skim cut will also not be the best solution. I prefer, if i make a 0.4mm depth of cut for finish pass, to dial in +0.4mm run the part, measure and then correct the offset ( for long parts correct a possible taper in the program ), run the finish pass again and be spot on. This ensures all deflection which occurs for these cutting parameters are taken in to account.
Uwe
(Note: Liking will "up vote" a post in the search results helping others find good information faster)
suntravel wrote: ↑Sat Apr 23, 2022 1:17 am
The Probe is a cheap chinese 3D probe with NPN circuit and a tip I made for the lathe.
Tom is right, for some cases you will have to adjust after probing if the part and the machine are not very rigid.
But a shallow skim cut will also not be the best solution. I prefer, if i make a 0.4mm depth of cut for finish pass, to dial in +0.4mm run the part, measure and then correct the offset ( for long parts correct a possible taper in the program ), run the finish pass again and be spot on. This ensures all deflection which occurs for these cutting parameters are taken in to account.
Uwe
Can you post a link?
(Note: Liking will "up vote" a post in the search results helping others find good information faster)
