Am I the only one who didn't know feed speeds can mess up tool life this much?

I was reading through a Haas manual last week at my shop in Cleveland and saw this stat that said running a feed rate 10% too slow can cut tool life by 40%. I always thought slower was safer but I guess not. Anyone else find little details like that hidden in their machine manuals?

3 comments

3 Comments

gavinw4521d ago

Set up a test myself after reading that exact thing in our Mazak manual. Ran two identical parts back to back with a 10% feed bump on the second one and the tool wear difference was honestly pretty shocking. The slower feed let the tool rub more instead of cutting clean, which trashed the edge way faster.

nina_jenkins21d ago

Honestly that's wild, I never would have guessed a 10% feed difference could cause that much extra wear. Sounds like the slower speed was basically letting it cook the edge instead of shearing clean. Kinda makes you wonder how many other little tweaks like that are hiding in the manuals.

theasmith21d ago

Gotta push back a little on that 40% number - it's not quite that cut and dry. I've seen similar stats in a few manuals but they usually apply to carbide tooling in aluminum or mild steel specifically, not across the board. The actual tool life hit depends a ton on what material you're cutting and what coating the tool has. For example, running a HSS drill 10% slow in stainless won't kill it nearly that fast. Just something to keep in mind before you start adjusting every feed rate in your program.