Research On The Vibration And Stability Analysis Of Slotted Circular Saw And Interlayer Saw

As an efficient cutting tool in the field of machining and manufacturing,the circular saw blade is widely used for sawing metal,wood,stone and other materials.During the sawing process,the circular saw blade generates vibration and noise,and strong vibration will destroy sawing effect,the noise generated by vibration will affect human health and the surrounding environment.Therefore,reducing the vibration of the circular saw blade,to improve the blade saw blade cutting stability,improve processing accuracy and reduce processing waste,safety and reduce noise is of great significance.This article designed different types of circular saw blades,including slotted circular saw blades,mezzanine circular saw blades and slotted laminated circular saw blades.Through the use of finite element ANSYS software,circular saw vibration and stability analysis.The main research work includes the following aspects:Design a variety of slot saw blade program,its finite element modal analysis,calculate the natural frequency of circular saw blade and find out the typical inherent mode of circular saw blade.Combined with traveling wave resonance theory,the reason of circular saw resonance was analyzed and the optimal slot design was established.Different damping mezzanine circular saw blades models are built,including a built-in single-damping mezzanine circular saw blade,a built-in multi-damping mezzanine circular saw blade and an external damping mezzanine circular saw blade.The natural frequencies and eigenmodes were calculated by ANSYS software.The influence of different thickness of damping interlayer on the natural frequency of circular saw blade and the influence of different damping interlayers on the natural frequency of circular saw blade were studied.The traveling wave vibration theory is used to study the vibration characteristics of mezzanine circular saw blades.The natural frequency of slot saw blade was calculated,and the vibration characteristics of circular saw blades with different thickness of damping sandwich and different damping sandwich filling were analyzed.Traveling Wave Vibration Calculation of Different Interleaved Circular Saw Blades by Traveling Wave Vibration Theory.The vibration characteristics of different laminated circular saw blades were studied.Due to the large diameter of the saw blade,small thickness,large displacement will occur small strain,so the study of thin circular saw blade nonlinear vibration isnecessary.Based on the combined harmonic theory of nonlinear forced vibration,whether the excitation wave force is equal to the forward wave frequency or the backward wave frequency;When the exciting force frequency is equal to the sum of the forward wave and the backward wave,whether to stimulate the response of the forward wave and the backward wave at the same time;When the exciting force frequency is equal to the frequency of the forward wave and the frequency of the backward wave and half,whether at the same time provoke the response of the forward wave and the backward wave.Circular saw blade thickness,cutting speed and cutting force will affect the circular saw cutting stability,slotted and laminated circular saw blade linear buckling stability analysis to calculate the maximum critical blade force,to prevent the blade in the process of instability caused by severe vibration.Analyze the common failure mode of saw blade,explain the cause of failure,and put forward preventive measures.And sawtooth static stress analysis to study the effect of slot on the serrated near the groove.The research content of this topic provides the direction for the optimal design of slotted and mezzanine circular saw blades and provides the theoretical basis for the design of circular saw blades.