Machine is a Haas TM1-P
Facemill is Maritool 2.48" dia 45 degree 5 flute with their ACK300 inserts
316 A240 plate 10" x24" .375" thick
3" of it length wise gets milled on both sides to a total thickness of 8mm, the rest is 5.5mm thick, again both sides
Holding the plate with 3 Kurt 3600 vises the entire 24" length
Using flood coolant
I ran the facemill at 600rpm at 10ipm, 2.2" stepover, .030" DOC, totally trashed the inserts after 2 passes.
I tried several combinations of going as high as 1000rpm 20 ipm to 400rpm 6 ipm, same result each time basically, 75% of my side work is stainless and I've never had a problem. Spindle load was over 100% as the inserts quickly died, 2 shattered on 1 try, I just got this facemill and inserts in the mail today so they are brand new. I have the same facemill in 90 degrees and they didn't last either but they weren't made for stainless specifically.
I ended up changing to a .75" 5 fl .125" CR EM at .60 DOC with .5" stepover, conv direction 1468 rpms started at 20ipm and had to back off part way thru to 10, pretty much trashed that mill too but it finished one side of part
Frustrated........I know I'm doing something wrong I just can't figure out what
Facemill is Maritool 2.48" dia 45 degree 5 flute with their ACK300 inserts
316 A240 plate 10" x24" .375" thick
3" of it length wise gets milled on both sides to a total thickness of 8mm, the rest is 5.5mm thick, again both sides
Holding the plate with 3 Kurt 3600 vises the entire 24" length
Using flood coolant
I ran the facemill at 600rpm at 10ipm, 2.2" stepover, .030" DOC, totally trashed the inserts after 2 passes.
I tried several combinations of going as high as 1000rpm 20 ipm to 400rpm 6 ipm, same result each time basically, 75% of my side work is stainless and I've never had a problem. Spindle load was over 100% as the inserts quickly died, 2 shattered on 1 try, I just got this facemill and inserts in the mail today so they are brand new. I have the same facemill in 90 degrees and they didn't last either but they weren't made for stainless specifically.
I ended up changing to a .75" 5 fl .125" CR EM at .60 DOC with .5" stepover, conv direction 1468 rpms started at 20ipm and had to back off part way thru to 10, pretty much trashed that mill too but it finished one side of part
Frustrated........I know I'm doing something wrong I just can't figure out what