Matt@RFR
Titanium
- Joined
- May 26, 2004
- Location
- Paradise, Ca
I've been asked to quote this. We would run these in the Haas VF-2ss which has 12,000 RPM and thru coolant. I have never dealt with this material before, but there is quite a bit of information online. I gather 20-30 SFM with uncoated carbide endmills and drills and lots of coolant is where it's at. We are quoting quantities of 2, 10, 40 and 200.
There are several things that scare me. I'm reading that chipping is a major concern, and the .013" thru holes are only drilling through .009" of material, so if it chips, I suspect we will lose the entire bottom of the counterbore, which forces 100% visual inspection of every hole. Or, we could make the side with the step in it last so the drilled holes don't actually go through the rough material, but I'm still concerned about chipping those same holes when it comes to facing the step in op 2.
Then there's the +.0004" Ø.044" thru hole and its .039" slot cousin. No choice but to finish that slot with an endmill obviously, which is how I would go about that hole as well normally. But I wonder how this material likes spring passes.
And the last major question is tool life for all of the above. I mean, are we looking at replacing drills and finishing endmills during each part? After each part? After several parts? I have no idea, but my instinct is telling me each part is going to eat at least $150 of tooling.
There are several things that scare me. I'm reading that chipping is a major concern, and the .013" thru holes are only drilling through .009" of material, so if it chips, I suspect we will lose the entire bottom of the counterbore, which forces 100% visual inspection of every hole. Or, we could make the side with the step in it last so the drilled holes don't actually go through the rough material, but I'm still concerned about chipping those same holes when it comes to facing the step in op 2.
Then there's the +.0004" Ø.044" thru hole and its .039" slot cousin. No choice but to finish that slot with an endmill obviously, which is how I would go about that hole as well normally. But I wonder how this material likes spring passes.
And the last major question is tool life for all of the above. I mean, are we looking at replacing drills and finishing endmills during each part? After each part? After several parts? I have no idea, but my instinct is telling me each part is going to eat at least $150 of tooling.