Cha0ticBliss
Plastic
- Joined
- Jan 18, 2019
Working on 1 piece order for a titanium piece that calls for a .1249 +/-.0001 x .600 deep thru hole. Material is 6AL-4V titanium hardened to 42RC. I have been going with .118 start hole. Tried a few different reamers but all of them have been cutting oversize. Started at 1400RPM 4.2IPM. Backed down to 700RPM hoping to shrink the hole size a bit. Also increased the feed to 10IPM without seeing it move more than .0001".
My next ideas are to try a some different reamers that I ordered and/or stone a reamer to bring hole down to size. Might have a go at pushing a ball bearing through the hole to smooth out the high spots if I get a hole that is a hair undersize. Also going to use MolyD/cutting oil instead of the coolant I was using previously.
Moving forward if the customer throws production qty my way, I will probably look into buying a roller burnisher but would prefer to avoid that for this 1pc if possible to get by without.
This is unfamiliar territory for me... anyone have any ideas on additional tips/tricks worth trying?
My next ideas are to try a some different reamers that I ordered and/or stone a reamer to bring hole down to size. Might have a go at pushing a ball bearing through the hole to smooth out the high spots if I get a hole that is a hair undersize. Also going to use MolyD/cutting oil instead of the coolant I was using previously.
Moving forward if the customer throws production qty my way, I will probably look into buying a roller burnisher but would prefer to avoid that for this 1pc if possible to get by without.
This is unfamiliar territory for me... anyone have any ideas on additional tips/tricks worth trying?