jspivey
Aluminum
- Joined
- Nov 18, 2018
- Location
- Southern Illinois
So, I am currently running a YG1 through coolant spade drill body and HSS inserts. Been using this setup for probably the last 6 months or so. Inserts range in size from 1" to 1 3/8". 99% of what I am drilling is D2. Drill half way through the part, bore, flip, and repeat.
Cutting parameters are 65 SFM and .006 per rev on an 1 1/4" insert. The drill is on center and runs smooth and quite.
The issue: What I've noticed is that the inserts seem to be chipping pretty consistently on the inner most chip breaker gash on one side or the other after 10ish parts. The insert never seems to chip on the opposite side, so I just keep using it and it seems to still run ok.
Has anybody else had a similar issue with YG1 spade drill inserts? Too much feed on the breakthrough? The reason I am asking is that I have been running parts exactly like this for years using an Allied Engineering drill body and HSS inserts. Exact same cutting parameters and setup, but very rarely would I have an insert chip. We decided to try the YG1 stuff after the Allied holder had an accident a while back.
Cutting parameters are 65 SFM and .006 per rev on an 1 1/4" insert. The drill is on center and runs smooth and quite.
The issue: What I've noticed is that the inserts seem to be chipping pretty consistently on the inner most chip breaker gash on one side or the other after 10ish parts. The insert never seems to chip on the opposite side, so I just keep using it and it seems to still run ok.
Has anybody else had a similar issue with YG1 spade drill inserts? Too much feed on the breakthrough? The reason I am asking is that I have been running parts exactly like this for years using an Allied Engineering drill body and HSS inserts. Exact same cutting parameters and setup, but very rarely would I have an insert chip. We decided to try the YG1 stuff after the Allied holder had an accident a while back.