hey, machine tool dreamwidth!
Mar. 27th, 2022 03:59 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
solarbirdI got a question!
This adjustable-hole-cutter I got has a max of 500 RPM and my newly assembled drill press doesn't go that slow.
BUT
The hole-cutter cuts holes up to 200mm. 500rpm is safe at 200mm, meaning the tool has a max safe rotational velocity of 314,000 mm/min.
So if I cut my 108mm hole at my drill press's slowest setting, that's a max OD rotational velocity of 250,860 mm/min.
That's much slower and well below the max safe outer-diameter rotation velocity of 315,000mm/min.
(at 200mm/500RPM, as above)
This sounds safe. But I could be missing something. Am I gonna put my eye out?
This adjustable-hole-cutter I got has a max of 500 RPM and my newly assembled drill press doesn't go that slow.
BUT
The hole-cutter cuts holes up to 200mm. 500rpm is safe at 200mm, meaning the tool has a max safe rotational velocity of 314,000 mm/min.
So if I cut my 108mm hole at my drill press's slowest setting, that's a max OD rotational velocity of 250,860 mm/min.
That's much slower and well below the max safe outer-diameter rotation velocity of 315,000mm/min.
(at 200mm/500RPM, as above)
This sounds safe. But I could be missing something. Am I gonna put my eye out?
no subject
Date: 2022-03-28 04:41 am (UTC)The primary issue with adjustable tools like that is the stiffness of the drill press itself. If it's wobbly, you'll notice it more in a single-point tool as there's no balancing force.
no subject
Date: 2022-04-04 03:37 am (UTC)