US 12,240,046 B2
Rotary cutting tool with tunable vibration absorber assembly for suppressing torsional vibration
Ruy Frota De Souza Filho, Latrobe, PA (US); and Logan M. Semnisky, Latrobe, PA (US)
Assigned to KENNAMETAL INC., Latrobe, PA (US)
Filed by Kennametal Inc., Latrobe, PA (US)
Filed on Feb. 6, 2023, as Appl. No. 18/106,160.
Application 18/106,160 is a division of application No. 17/319,664, filed on May 13, 2021, granted, now 11,691,205.
Application 18/106,160 is a division of application No. 16/555,412, filed on Aug. 29, 2019, granted, now 11,090,737, issued on Aug. 17, 2021.
Prior Publication US 2023/0182216 A1, Jun. 15, 2023
Int. Cl. B23B 51/00 (2006.01); B23B 51/02 (2006.01); B23C 5/00 (2006.01); B33Y 80/00 (2015.01)
CPC B23B 51/0003 (2022.01) [B23B 51/02 (2013.01); B23B 2250/16 (2013.01); B23B 2251/02 (2013.01); B23B 2251/40 (2013.01); B23B 2251/50 (2013.01); B23B 2251/70 (2013.01); B23C 5/003 (2013.01); B33Y 80/00 (2014.12)] 6 Claims
OG exemplary drawing
 
1. A method of suppressing torsional vibrations in a rotary cutting tool having a replaceable cutting head and a pocket portion for holding the replaceable cutting head, the method comprising:
disposing a tunable vibration absorber assembly within a cavity formed in the replaceable cutting head of the rotary cutting tool, the tunable vibration absorber assembly comprising at least two tunable absorber masses, a resilient material between the at least two tunable absorber masses and the cavity, and one or more connecting members for preventing relative angular displacement between the at least two tunable absorber masses about a central, longitudinal axis of the cutting tool; and
tuning the tunable vibration absorber assembly to a desired frequency by selecting one or more material properties of the at least two tunable absorber masses, the resilient material and the one or more connecting members, thereby suppressing torsional vibration of the rotary cutting tool during a cutting operation.