Milling Simulation And Experimental Study Of Iron-based Powder Metallurgy Parts

Although powder metallurgy is a metal processing method with no cutting or less cutting,the traditional powder metallurgy parts made by press molding and sintering cannot meet the demand parts of high value-added and mass production made today.In the cutting process,due to the porosity of the material,there is a hard phase in the microstructure,the tool performance is high,and the temperature is high and the deformation is large during the cutting,which causes the surface precision of the machine to fluctuate greatly.Moreover,the conventional experimental method is preferable to the cutting parameters,which is not only time-consuming and expensive,but also has poor predictability.In order to solve the above problems,this paper uses CAD software to establish the milling simulation model,uses the orthogonal experimental design method to design the simulation test bench,and uses DEFORM-3D to carry out the milling simulation experiment on the representative powder metallurgy of the mechanical research institute.Simulated data such as cutting force torque milling temperature and tool wear after milling in the milling process of powder metallurgy parts under the range of cutting amount.The response surface method is used to analyze the factors that have great influence on the milling results.The design expert is used to analyze the cutting parameters and test data,and the corresponding response surface map is drawn according to the influencing factors.The processing parameters are analyzed by the response surface graph.The interaction effect on surface roughness has certain reference value for improving the processing quality of powder metallurgy parts.In this paper,the finite element method is used to analyze the milling process,and the cutting parameters of the cemented carbide end mill in milling powder metallurgy FC-0205 are obtained.The cutting force torque,milling temperature,tool wear and the cutting force of the synchronizer cone milling experiment and the surface quality of the machined parts after the simulation were compared.The consistency between the simulation results and the experimental results was verified,and whether it is feasible that the simulation was guided to guide the actual machining.At the same time,using computer software as a tool to simulate the actual machining process has become a common and effective research method used by many researchers in metal cutting research.It can save a lot of labor and time costs,and can also get many difficult experiments.The important data obtained in the paper provides a valuable reference basis and has certain guiding role for practice.