mancavedweller
Aluminum
- Joined
- Aug 29, 2012
- Location
- Melbourne, Australia
My boss was not too happy with me at one point today.
When I set up the tooling in the cnc lathe, I put a 3mm drill bit in a 3-4 mm collet. Yes I did tighten it enough.
Anyway when it came to drilling the part the drill pushed back in the collet. I told my boss and he acted like I'd done something really stupid, by using a 3-4 mm collet instead of a 2-3 mm collet.
I simply assumed if a collet says 3-4 mm, it is capable of clamping on a 3mm part, otherwise why the hell would it say 3-4 mm.
I've clamped plenty tools that are at the lower end of a collets clamping capability and never had an issue. And I'm talking about carbide insert milling bits on D2 tool steel.
From this point onwards, to cover my arse, I'll never use a collet at the lower end of its clamping spec, but do any of you guys think I did anything stupid with the aforementioned 3 mm drill bit.
When I set up the tooling in the cnc lathe, I put a 3mm drill bit in a 3-4 mm collet. Yes I did tighten it enough.
Anyway when it came to drilling the part the drill pushed back in the collet. I told my boss and he acted like I'd done something really stupid, by using a 3-4 mm collet instead of a 2-3 mm collet.
I simply assumed if a collet says 3-4 mm, it is capable of clamping on a 3mm part, otherwise why the hell would it say 3-4 mm.
I've clamped plenty tools that are at the lower end of a collets clamping capability and never had an issue. And I'm talking about carbide insert milling bits on D2 tool steel.
From this point onwards, to cover my arse, I'll never use a collet at the lower end of its clamping spec, but do any of you guys think I did anything stupid with the aforementioned 3 mm drill bit.