Trans-scale Correlation Analysis Method And Security Recession Mechanisms For High Speed Milling Cutter

During high-speed milling,the collide and impact between cutter and workpiece produce a high-speed intense strain,cutter component joint surface appears crushed,brittle or ductile fracture and other problems caused by the security recession has restricted bottleneck of high-speed milling cutter efficiency,science essence of the behavior of milling cutter materials acts to be revealed.This thesis which obtained the support of the National Natural Science Foundation of China" wave energy efficient milling kinetics and mechanism of injury multiscale collaborative design method(51375124)",research security stability of high-speed milling on nonlinear multi-field coupling,to reveal the mechanism of high-speed milling security recession,communication and integration of mesoscopic and macro-level theory,put forward basing on the high-speed milling force continuum connection-associated molecular dynamics method,research coupling matching between macroscopic atomic group exercise and continuous media campaign to build high-speed cutter security competition and the recession coupled matching model,finally,design a high-speed milling cutter with inhibiting the safety of recession.Use high-speed cutter component swarm entropy method to identify high-speed cutter component security recession features;take advantage of high-speed milling cutter component entropy rate of change of particle swarm movement,describes the high-speed milling its security recession process and characteristics;proposed high-speed milling cutter security design methods of minimum entropy values,to achieve effective control of high-speed milling cutter security recession.Use high-speed cutter component sweep surface electron microscopy test results,the establishment of milling mesoscopic structural model and identify the boundary conditions.By connecting atomic force based-overlap with the finite element model,set up a cutter macro-mesoscopic synchronization evolution method,revealing synchronization associated with the evolution mechanisms of high-speed milling macro-mesoscopic structures,explicit therelationson macro-mesoscopic security recession;proposed control method for high-speed milling performance security recession,achieve high-speed cutter security recession control across the scale control.Establish high-speed cutter component initial defect model,explicit cutter dislocation slip,dislocation climb,dislocation pile,grain boundary migration,structural micro-crack,cleavage planes and other mesoscopic movement,density,energy characteristics,to clarify the mechanism of interaction between macro-mesoscopic structures of cutter security recession,proposed structure control method of high-speed cutter security recession,achieve across macro-mesoscopic scale cooperative control of security recession.Reveal security recession mechanism of cutter component,explicit the security recession process blade support in the cutter component,blade tooth root,blade screw holes,screw threads of the screw head,blade positioning face and reveal its competition and coupling mechanism,evolved mechanisms to clarify the recession,put forward the security recession control method of cutter component under the action of wave mechanics,to achieve security recession across macro-mesoscopic scale collaborative design,develop a high-speed cutter with high security.