Need some tooling advice. We're getting ready to set-up some 6061 aluminum. It's 3" O.D. with an interupted cut.
Here's a picture of the finished part:
http://www.bmikarts.com/shop/?shop=1...showFullImage=
What I need is some advice on inserts. We use to buy 3" dia. solid material, but realized that we can save about $.50 in material per hub and labor on top of that by having an extrusion made with the clover shape. But that poses a problem when we turn it :stickpoke(the interupted cut). I've had problems with this kind of cut before. Usually left a cloudy finish reguardless of what speed/feed I used. And i'm not very familure with insert geometry. We have holders for CNMG, VNMG, and WNMG inserts. Can anyone recommend a insert for this job? Also, we're getting 2500lbs of aluminum for this job, that'll be about 2700 of these hubs. So tool life is an issue. Finish is very important. Functionaly it doesn't make a bit of difference, but the market these are sold in it makes all the difference. Thanks, Sean