adammil1
Titanium
- Joined
- Mar 12, 2001
- Location
- New Haven, CT
I just purchased the following parting tool set with some toy money. Amazon.com: Cut-Off Sets without Tool Block SGIH32-3S, SGIH 32-3 Blade, 10 SGTN-3-DC656 Inserts and Storage Box: Industrial & Scientific.
I had used an Iscar cutoff tool off tool back when I was in college of the same design and at the time we were cutting some weird exotic nickle alloy that work hardened and wore out cutting tools real fast, and yet I recall the Iscar one would go dull and barely cut but I can't seem to recall it going catastrophic on the first cut and ruining its holder too! I am pretty sure back then we didn't have any coolant on the part either.
Well I purchased my set from Dorian as I got a good deal on the price. The whole set was $100. I made up my own holder as I have an AXA toolpost but built it as rigid as I could make it.
First cut on the machine, I set it up just a tiny bit below center, it was chattering for the first few moments, but once I adopted a steady feed it went about 1/2" then all of a sudden poof the cutter disintegrated and took the bottom of the holder with it!
Since I only have 2 sides I am very hesitant to try another shot. For coolant I am using brushed on cutting fluid which I know probably isn't ideal but I don't have flood coolant on the lathe. Do I really need flood coolant? I don't seem to recall having it back then. I am not too concerned with cutter life as if I get a few hundred cuts an insert I will be happy. But with that being said, I do need the insert and holder to last for more than 1/2 a cut!
If it is of any help here's a photo of my setup and the aftermath.
Here's a photo showing the slot, it is totally shot!
Other than that not much else I can say, it just happened so fast that I am hesitant to try again until I have a better idea where I went wrong. I should also say speeds and feeds were real conservative. On 2"dia I was turning at 250rpm.
What do you guys think caused the issue?
I had used an Iscar cutoff tool off tool back when I was in college of the same design and at the time we were cutting some weird exotic nickle alloy that work hardened and wore out cutting tools real fast, and yet I recall the Iscar one would go dull and barely cut but I can't seem to recall it going catastrophic on the first cut and ruining its holder too! I am pretty sure back then we didn't have any coolant on the part either.
Well I purchased my set from Dorian as I got a good deal on the price. The whole set was $100. I made up my own holder as I have an AXA toolpost but built it as rigid as I could make it.
First cut on the machine, I set it up just a tiny bit below center, it was chattering for the first few moments, but once I adopted a steady feed it went about 1/2" then all of a sudden poof the cutter disintegrated and took the bottom of the holder with it!
Since I only have 2 sides I am very hesitant to try another shot. For coolant I am using brushed on cutting fluid which I know probably isn't ideal but I don't have flood coolant on the lathe. Do I really need flood coolant? I don't seem to recall having it back then. I am not too concerned with cutter life as if I get a few hundred cuts an insert I will be happy. But with that being said, I do need the insert and holder to last for more than 1/2 a cut!
If it is of any help here's a photo of my setup and the aftermath.
Here's a photo showing the slot, it is totally shot!
Other than that not much else I can say, it just happened so fast that I am hesitant to try again until I have a better idea where I went wrong. I should also say speeds and feeds were real conservative. On 2"dia I was turning at 250rpm.
What do you guys think caused the issue?