Toolslinger
Plastic
- Joined
- Jan 11, 2007
- Location
- Central Jersey
OK folks, I went back in the archives, and I've got some help there, but I probably just still don't understand enough to make it useful...
Have to hog out areas of the parts I'm working on. Material is 303 Stainless. Machine is a Haas VF2ss. I've got Kennametal cord profile 1/2" diameter 5/8" CEL Roughers. Their book gives me 300-380 SFM, and .0025 chip. They also give me 40% for the stepover, and 1/2" depth of cut. So I was running that, and just destroying the cutters in short order, but that run had to go out, so I just threw cutters at it, and finished...
Next project isn't such a rush, so digging in to some HSM info gave me a recommendation of double the low side of the SFM, and 2.5 times the chip load with a 4% stepover. So far that sounds a lot better in the machine, service life is yet to be determined since I just got the parts running... Looking forward to the next side of these parts is where the real material removal is, I'm just wondering if those numbers look good to those with more experience...
The next question is, should I even be bothering with roughers, or just go to a regular cutter? Does anyone even run roughers with HSM paths? I have found exactly zero posts here or elsewhere talking about that...
Have to hog out areas of the parts I'm working on. Material is 303 Stainless. Machine is a Haas VF2ss. I've got Kennametal cord profile 1/2" diameter 5/8" CEL Roughers. Their book gives me 300-380 SFM, and .0025 chip. They also give me 40% for the stepover, and 1/2" depth of cut. So I was running that, and just destroying the cutters in short order, but that run had to go out, so I just threw cutters at it, and finished...
Next project isn't such a rush, so digging in to some HSM info gave me a recommendation of double the low side of the SFM, and 2.5 times the chip load with a 4% stepover. So far that sounds a lot better in the machine, service life is yet to be determined since I just got the parts running... Looking forward to the next side of these parts is where the real material removal is, I'm just wondering if those numbers look good to those with more experience...
The next question is, should I even be bothering with roughers, or just go to a regular cutter? Does anyone even run roughers with HSM paths? I have found exactly zero posts here or elsewhere talking about that...