Cole2534
Diamond
- Joined
- Sep 10, 2010
- Location
- Oklahoma City, OK
This was a new one for me last night. I started running a proven program in the VMC and in the 2nd op (7" deep, 3/4" hole, 400rpm in ETD150) it started getting louder until the machine alarms out on Z axis overload. WTF?
When I pulled the part from the vise and cleaned it out big fragments of the drill came out, including one whole cutting edge. Here's the thing- it was still sharp. The corner wasn't chipped or burned and the edge still had good form. It was a PTD drill, despite being made in Brazil I've always had good luck with their tools. The drill was about 5" into the cut when this happened.
So I'm wondering- is it possible I just got a bad drill? If not, I'm at a loss for what happened.
When I pulled the part from the vise and cleaned it out big fragments of the drill came out, including one whole cutting edge. Here's the thing- it was still sharp. The corner wasn't chipped or burned and the edge still had good form. It was a PTD drill, despite being made in Brazil I've always had good luck with their tools. The drill was about 5" into the cut when this happened.
So I'm wondering- is it possible I just got a bad drill? If not, I'm at a loss for what happened.