INCONELDAVE
Aluminum
- Joined
- Mar 29, 2014
- Location
- PA
Before I start I claim complete ignorance never having used a spade drill! that said.
Machine VMC no TSC ,no High pressure coolant. I am drilling it to dia. 1.40 +- .010
about 6" inches deep in an aluminum forging
Only 7 PCS total.. picture a 1.71 dia held in a fixture(No it wont fit in a lathe)
also was planning on altering the insert grinding the dia from a stock 1.406 dia to 1.394 dia
with .12 rad on the 2 corners for the form at the bottom of hole.
what happens if I drill a smaller pilot hole (I cant visualize this being a good idea) or just go for it?
My smaller machine has thru spindle high pressure but I have the larger basically ready to go setup wise.(not a deal breaker thou)
So anybody???? fire away!
Thank you
Machine VMC no TSC ,no High pressure coolant. I am drilling it to dia. 1.40 +- .010
about 6" inches deep in an aluminum forging
Only 7 PCS total.. picture a 1.71 dia held in a fixture(No it wont fit in a lathe)
also was planning on altering the insert grinding the dia from a stock 1.406 dia to 1.394 dia
with .12 rad on the 2 corners for the form at the bottom of hole.
what happens if I drill a smaller pilot hole (I cant visualize this being a good idea) or just go for it?
My smaller machine has thru spindle high pressure but I have the larger basically ready to go setup wise.(not a deal breaker thou)
So anybody???? fire away!
Thank you