Im having a hard time finding feed and speed data for chamfer mills. Im using a 3/8" 45° carbide chamfer mill, the radial depth is about .1 in 6061 aluminum , ive checked on several manufacurers websites but they dont list any FPT or SFM data for chamfer mills. Anyone have any good starting points or suggestions?

Thanks,
Jim

I chamfer everything because i am to lazy to de-burr and it looks beter anyway. With carbide I go 8000 rpm with a feed of 50. ipm.

Chamfering def looks much better then hand deburring. I used some data given for end mills of that size and radial depth and came up with 4584 rpm and 49 ipm, that was about .00265 FPT and 450 SFM. The cut is great it just seems like im moving so slow, I wanted to see how fast others were moving and compare. Thanks for your input!

Jim

How many flutes does it have? I have numerous programs that use a 90degree carbide spot drill for 45degree corner chamfers; this saves a tool change becasue the spot drill is spotting and chamfering holes as well. Standard speed is 10,000rpm and a feed of at least 50 ipm and many times 80to 100ipm.

If your tool has four flutes you should not be going slower than 100ipm if you can run the spindle at 8 to 10 krpm.

Its a 4 flute chamfer mill, I have a VF2 and my max spindle is 7500 rpm, while 49 ipm creates a real smooth cut I just feel its just to slow. Ill probably try to increase feed and rpm by at least 50% to start and see how the cuts turn out.

I use an OSG 6 flute counter sink for chamfer milling 10K and 120IPM minimum!

How bout in 304 stainless....I just starter machining some stainless exhaust flanges. Im curious as to others speeds and feeds for a small edge chamfer in 304 SS.