ben_nguyen•2mo agoMost Upvoted

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?

3 comments

3 Comments

grace_white2mo 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.

ryanh561mo agoMost Upvoted

Holy crap. 50 parts? Thats a massive jump. I figured the chip load formula would help but I didn't think it would double your tool life like that. I gotta go back and talk to my boss about digging into this more. That kind of gain is insane for just changing a feed and rpm.

shaneb162mo 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.