Study on Machining Vibration Suppression with Multiple Tuned Mass Dampers: Vibration Control for Long Fin Machining

Abstract

This study aims to suppress vibration during the machining of long and thin fin parts. Typically, fin parts have low stiffness because fixing the fin is impeded by a end-mill, machine tool or other fins. In this study, multiple tuned mass dampers (TMDs) with the same characteristics were applied to the machining of a fin part measuring 18 mm × 180 mm × 2600 mm. The characteristics of the TMDs were optimized by calculation using a lumped-mass-points system model of the fin part. Then, an impact hammer test and a machining test were conducted on the actual fin part. The dynamic stiffness of the fin part was improved by up to 14 times by using five TMDs, and the amplitude of vibration during machining was decreased by more than 90%.

Filter Design of Adjusting Common Phase for Vibration Suppression Control of Multi-Degree-of Freedom System

“…In addition, an input shaping method that suppresses the vibration of a flexible robot arm has been proposed [6,7]. In the method of installing a dynamic vibration reducer on a tower structure, the actuator and the sensor arrangement are considered in view of the vibration mode [8][9][10][11]. Although a method of attaching the dynamic vibration reducer at a predetermined position is effective, if vibration can be suppressed without attaching the device, subsequently, it is an effective method.…”

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“…Механические колебания широко распространены в разнообразных технологических процессах [5][6][7][8]. Приводы машин и механизмов преимущественно электромеханические [9][10][11][12], поэтому механическая реактивная мощность трансформируется в электрическую реактивную мощность сети, ухудшая качество электроэнергии [13]. В этой связи учет механической реактивной мощности имеет немаловажное значение [14], и этим обусловлена актуальность представленной работы.…”