Boss told me my parts looked like a raccoon chewed them out

He was being nice about it but I finally asked him straight up what he meant. Turns out my feeds and speeds were way off for the material I was running. He showed me a simple formula for figuring out chip load based on tool diameter and number of flutes. Changed my approach completely and now my finishes are actually smooth. Anyone else have a coworker lay down some math that totally changed how you run your machine?

2 comments

2 Comments

grace_white22d ago

Did your boss also mention anything about tool deflection or were you mostly just fixing the chip load issue? I am curious if dialing in that formula changed your tool life much or if that wasnt a problem yet.

shaneb1622d ago

Yeah exactly @grace_white the tool deflection thing came up later. My boss had me drop the feed by 15% and bump up the rpm a bit. That chip load formula change helped a ton. End mill stopped chattering on those deep passes. Tool life actually got better too. Went from swapping tools every 30 parts to almost 50 before they wore out.