Research On Simulation Technology Of Micro Abrasive Grinding Of TC4 Titanium Alloy

Due to its good comprehensive performance,TC4 titanium alloy with a light,high-strength and corrosion-resistant material properties,has been widely used in aerospace,such as aero-engine blade components and space shuttle shells.The working environment of high temperature,high pressure and strong load requires the titanium alloy component to have high surface quality.Therefore,more strict requirements are put forward for the finishing process of obtaining the service surface of the component.In the grinding process of titanium alloy material,the cutting contact between the micro-abrasive and the workpiece is very complex,the shape of the grinding debris,the change rule of grinding force and the distribution of grinding temperature will have a very important influence on the surface quality of grinding.Therefore,in order to effectively control micro abrasive grinding chip formation,grinding force and temperature change rule,guide the titanium alloy belt grinding process,this paper carried out a single diamond grits with a microscopic simulation of grinding of abrasive grinding grain of three dimensional technology research,reveals the grinding parameters on the processing chip morphology,the influence law of grinding force,grinding temperature,and through the micro abrasive grinding experiments on the simulation results validate,concrete research content is as follows:(1)Based on titanium alloy material performance and processing characteristics,for the grinding of abrasive geometry and abrasive material is analyzed,using the simplified building grinding abrasive particle shape effectively,set up a single diamond grits physical movement model in the process of grinding,the single diamond grits in grinding arc area of effective contact arc length,and established the grinding chip thickness,respectively,and the single abrasive grinding force theory model.(2)Bombined with titanium alloy material properties and its microcosmic basis of abrasive grinding theory,using the Abaqus finite element simulation technology in the single diamond grits grinding research and analysis of titanium material constitutive model is established,and the different grinding depth,grinding linear velocity and grinding grain of negative rake Angle of the single simulation of grinding of abrasive,and through the grinding parameters of single factor and multiple factors impact on the process of the simulation results,revealing the different grinding parameters on grinding chip morphology,the influence law of grinding force,grinding temperature,etc,and master the influence of various parameters on the grinding process of sensitivity.(3)By means of statistical analysis of abrasive abrasive particle density and radius,random and can realize position Angle is established,the distributing model of random grits used more than grits randomly distributed state,built more than finite element simulation model of abrasive grinding,arrangement form of the different grinding material removal form and researches on the grinding force,reveal more than of abrasive grinding mechanism of material removal process,and have mastered more than grinding grain of each particle on the grinding force in grinding process of coupling effect.(4)According to the titanium alloy material single and multiple measuring technology research of simulation of grinding of abrasive,abrasive abrasive using single star,three dimensional force transducer and other titanium alloy micro abrasive grinding experiment platform is constructed,using orthogonal experiment method,the single diamond grits of grinding parameters on grinding process experiments,the influence of the experimental results of micro grits is verified the rationality of the results of simulation of grinding of titanium alloy.