Stress Wave Damage Characteristics And Control Methods Of High Efficiency Milling Cutter Tooth Flank

By virtue of its high cutting efficiency and meet various sophisticated processing requirements,high efficiency milling cutter is widely used in military,medical equipment and other manufacturing fields.As the key to material removal,During the cutting process,the contact relationship between cutter and cutter is dynamically changed due to milling vibration and the original error produced by the cutter manufacturer,which makes the tool contact relationship dynamic.Tooth injure not only affects the surface level of the workpiece but also has an impact on service life of milling cutter,so it is important to reveal the evolution mechanism of tooth damage under the action of stress waves in the milling process and the control of tooth stress wave damage to improve tooth life and surface quality.This paper is supported by the National Natural Science Foundation of China(NSFC)project "Multi-scale coupling mechanism of non-linear frictional dynamics and wear of energy-efficient milling tools(51875145)" as a platform to achieve effective control of tooth damage under the action of stress waves.Firstly,based on the one-dimensional chord theory,the wave equation in the friction region of the cutter tooth flank is constructed,and its propagation and attenuation characteristics are revealed through the solution of corresponding stress waves.The energy of cutter tooth stress wave propagation is solved,and the cutter tooth damage criterion is given.Combined with molecular dynamics method,the surface energy of cutter tooth material is given,revealing its damage evolution characteristics.Finally,the effectiveness of the above algorithm is verified through experiments.Secondly,the influencing factors of cutter tooth damage are identified,and the response surface method is used for multifactor significance analysis.The comprehensive effect of various influencing factors is given and ranked based on the significance probability level of each factor.Finally,in order to analyze the specific interaction degree of significant items,a quantitative analysis of various influencing factors is given,providing conditions for subsequent control of cutter tooth stress wave damage.Finally,based on the significance analysis of the influencing factors,a control method for cutter tooth stress wave damage is proposed through stress wave induced damage criteria and gray correlation analysis.Under the premise of ensuring milling efficiency,cutter tooth damage is evaluated.The effectiveness of the control method for cutter tooth stress wave damage is confirmed by comparing experimental and simulation results.