Modal analysis of the dynamic characteristics of a numerically controlled woodworking center

Abstract

The dynamic characteristics of a numerically controlled woodworking center are experimentally studied. Specifically, the amplitude-frequency characteristics, the resonant frequencies in various directions, the dynamic and static rigidity, the degree of damping of vibrations, and the dynamic coefficient of the wood working center are subjected to modal analysis. The behavior of the system components is investigated under the action of external excitation and in end milling.

Dynamic analysis of lathe bed of woodworking CNC machining center based on the modeling of joint surface

“…Some experts and scholars mainly focus on the experimental research and analysis of the dynamic characteristics of the whole machine and various mechanical system structures of woodworking machinery. Pimenov D. Y. et al [ 7 ] studied the dynamic characteristics of woodworking CNC machining center and analyzed the amplitude-frequency characteristic of the CNC machining center and the dynamic performance of the woodworking CNC machining center during external excitation and milling. Noda [ 8 ] used the bending theory to derive the equation of motion under the action of thermal load and plastic strain of the tensioned circular saw.…”

Cutting Forces in Peripheral Up-Milling of Particleboard

“…A common problem for all investigations into industrial PB cutting, except for those which are model-based, is the presence of strong vibrations. High cutting speeds generate vibrations not only at the machining center [ 25 ] but also at the fixed workpiece, significantly disturbing the force measurement. For rough measurement of the feed force that is felt by an operator during PB sawing [ 26 ], these vibrations do not play an important role, since several teeth are working at the same time, and the impact frequency is too high to be felt by the operator.…”