Simulation And Experimental Research For Cutting Process Based On The Carbide Tool

With the development of engineering level, the requirement of precision in manufacture is higher and higher. As an important part of manufacturing, metal cutting technology is also faced with enormous challenges. It has become an urgent need the technology that in order to improve the surface quality 、high efficiency and high precision metal cutting technology.Because of the complexity of the metal cutting mechanism, the research of metal cutting is a difficult problem. There are many shortcomings that the engineering experiments and theoretical analysis used in the earlier studies,such as not easy to track observation、 high observation equipment cost、 long experiment period and human consumption.The finite element simulation of metal cutting is applied to the field of metal cutting technology research. The results obtained by using the finite element method(FEM) method are very closed to obtained by using the engineering experiments. Therefore, the research of metal cutting technology is carried out by FEM method.The paper firstly understand the influence of cutting parameters on surface quality(surface roughness).Through cutting experiment and the detection of surface roughness of the workpiece,then make the corresponding analysis according to the test data for further optimization of cutting parameters of cutting tool to lay a foundation.In this paper, the finite element model of metal cutting was established by using ABAQUS software. The tool was YT15 hard alloy and the new blade MC6025, and the workpiece material was 45 steel and superalloy GH4169.The material model of the workpiece was constructed using Johnson-Cook constitutive equation. Using the failure criterion of Johnson-Cook realize the separation of the chip and workpiece,using the adaptive meshing technique,and the phenomenon of the hourglass control and post-processing.The influence of the cutting element on the cutting force and the influence of new blade MC6025 on suface roughness was researched by the experiments and cutting simulation experiments that according to the single factor control variables.For 45 steel,the influence of the cutting depth、cutting speed、feed rate、 rake angle on cutting force、stress、temperature and cutting burr was studied;And so on the GH4149;The mechanism of cutting deformation of superalloy GH4169 was studied. The formation process of serrated chip was divided into three stages, and Through cutting simulation experiment of superalloy GH4169 by the method of fixed single cutting parameter factor is to research the influence about the cutting speed、feed and depth on cutting stress 、force、strain and temperature,It is found that the point in the cutting process are corresponding to the characteristic points of the cutting forces, cutting strain and the temperature,and there is a certain regularity. Besides on the basis of the finite element tool,it is proved that the cutting experimental process and simulation are in good agreement, which can lay a solid foundation for further research.