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TIL a trick for chatter on thin walls at the Detroit tool show
I was watching a demo on a Haas VF-2 at the Detroit tool show last month. The guy was running a part with a 0.06 inch wall and it was singing. He just bumped the feed rate up by 15 percent and the chatter stopped almost completely. I tried it on a similar job back at my shop and it worked way better than messing with the speeds. Has anyone else found a simple feed tweak works better than a full reprogram for vibration?
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drew_hart45mo ago
That's a solid tip. I'm curious if that 15 percent bump was the sweet spot for that exact setup, or if you had to play with it more on your machine. Did you find it worked better on certain materials, like aluminum versus steel?
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emery2902mo ago
Gotta disagree a tiny bit here. @the_thomas said a ten percent bump worked for them on 6061, but I think that's less reliable than a bigger jump. In my experience, that 15 percent change hits a different harmonic or something, whereas ten percent sometimes just makes it worse.
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the_thomas5mo ago
Worked for me on 6061 with a ten percent bump.
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logan_wells5mo ago
That's a classic machine shop moment right there. Drew_hart4 is right to ask, because every machine seems to have its own weird little personality with feeds and speeds. You just have to find its happy place through trial and error.
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