Study On Milling Cutter Vibration And Cutting Parameters Optimization For High Efficiency And Low Impact

Milling methods is currently one of the most important machining technologies in the field of machining and manufacturing.Milling system due to the impact of the vibration phenomenon of the milling cutter will lead to transient cutting position changes and affect the contact relationship between tool and workpiece resulting in the cutting performance of the milling cutter and workpiece material processing accuracy being reduced,can’t achieve high efficiency,high quality,low vibration,low cost of milling process.Therefore,the study of the vibration response of milling cutters and the improvement of energy efficiency of milling cutters is of great importance to improve the machining performance and material quality and accuracy of milling cutters.Therefore,in this paper,the study on milling cutter vibration and cutting parameters optimization for high efficiency and low impact is carried out for such problems,as follows:Firstly,the research on the vibration sources of milling cutter,each excitation composition,and milling energy consumption model was conducted.The analysis of the milling process system reveals the vibration source of the milling cutter;the finite element modal simulation of each subsystem of the milling process system is carried out separately to avoid the resonance interval of each internal subsystem;each excitation model affecting the vibration of the milling cutter is established;the energy consumption model in the milling process system is analyzed and studied.Secondly,the vibration response study of the milling cutter was carried out.The relationship between milling tool speed and vibration under different machining conditions and the displacement equation of milling tool vibration under the combined effect of machine tool excitation and centrifugal force excitation is obtained through milling machine self-excitation experiments;the vibration response of milling tool under the coupling effect of multiple excitations is analyzed by dividing different milling stages of milling tool through milling tool vibration test experiments.Again,the simulation study of milling force under the influence of vibration was carried out.Through the milling cutter vibration test experiment,the vibration acceleration signal of the milling cutter is transformed into the milling cutter vibration displacement equation by numerical integration and superimposed to the ideal predetermined track behavior equation of the milling cutter tip point to obtain the milling cutter trajectory under the influence of vibration;the milling force under the influence of vibration is simulated and analyzed by Deform-3D simulation software to obtain the trend of milling force under variable parameters and compare with the experimental data to verify the accuracy.The accuracy was verified by comparing with the experimental data.Finally,the optimal milling parameters are determined based on the particle swarm algorithm by establishing an optimization model with the objectives of milling tool vibration impact,milling force,energy utilization rate and machining efficiency;based on the optimized results,a comparison experiment is then conducted to determine the effectiveness of the optimization results by comparing the milling vibration,machining efficiency,milling force and surface roughness of the machined material under different milling parameters.This paper reveals the source of milling tool vibration and response law through the study of milling tool vibration and parameter optimization,solves the conflict between vibration impact and efficiency,and provides support for the realization of milling tool vibration reduction and high energy efficiency.