Vibration turning between centers - CNCzone.com-The Largest Machinist Community on the net!

Jedi · #1 04-06-2007, 01:01 AM

Im having a hard time turning the OD of a 35" length stainless steel bar 2.5" in diameter. Ive adjusted the speeds from 300-1200 as well as slow feeds and fast feeds. Ive found that a slow speed of 400 and a fast feed help as well as a smaller nose radius insert with a positive rake. Any other tips would be great. Thanks

JH-Q · #2 04-06-2007, 11:07 AM

Any chances of using a steady or following rest?
Seems like you have all the tricks tested which come in to my mind.

RICHARD ZASTROW · #3 04-06-2007, 11:40 AM

Have you tried the on-edge high positive inserts like Hertel? J&L used to have them in their catalog, Kennametal owns Hertel. You might have to look in the Kennametal turning tool catalog or call them.

add note: They use the name Fix-Perfect

Jedi · #4 04-08-2007, 12:26 PM

Im using a high positive stainless insert. If i use the steady rest will it push the work off centre because i still have to turn the piece around and machine the other side?

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