Opening drills....

[jcmech]

As a continuation of my last thread "3-5/8" holes..etc..", my tool rep has recommended we use a two or three step method. However he wants me to make a decision on whether or not my machine can handle the tooling. Our machine runs on 7hp 30 min. 4hp continuous on max. 6000 rpm. the coolant pressure is pretty weak (~15psi however our tool rep does not seem to think this will be a problem), can it drill a 1-3/4" hole with a spade drill?

 

[MikeHalloran]

Not in carbide, maybe in aluminum. You didn't provide a link to the other thread, so I don't know what you're trying to drill.



Mike Halloran
Pembroke Pines, FL, USA

 

[MikeHalloran]

Never mind, I found it. Carbon steel.

The spreadsheet that you use for feeds & speeds should be able to give you power requirements, too. Do tooling guys still hand out paper slide rule calculators for that kind of stuff? Probably not; look on the CD he gave you.





Mike Halloran
Pembroke Pines, FL, USA