Design And Analysis On Slice Cutter For 508Ⅲ Steel High-efficient Machining

With the rapid development of national economy, nuclear power as a green power generation mode will gradually become the main way of generating electricity, nuclear power as a green power generation mode will gradually become the main way of generating electricity. Therefore the effective processing technology of nuclear power equipment will become the national key research topic. Difficult-tomachine material 508Ⅲ steel is applied in substrate materials of water chamber head in the nuclear power industry. 508Ⅲ steel is forged into water chamber head workblank and its surface exists flaws. In addition, the materials removal is extremely large. All above these seriously affect the processing efficiency. The way of layer milling can improve the machining efficiency of 508Ⅲ steel.Firstly, it conducts the cutting performance experiment and structure design for layer milling cutter. Through milling experiment, 508Ⅲ steel cutting performance and the feasibility of the layer milling 508Ⅲ steel are analyzed. Then based on the cutting characteristics of 508Ⅲ steel, making structure design and building 3D model of layer milling cutter and insert lay the foundation for further optimization and simulation.Secondly, structure parameter and cutting parameter of layer milling cutter are optimized. Through layer milling experiment and finite element analysis, the angle parameter and structure parameter of layer milling cutter are optimized. Then based on the layer milling experiment condition, cutting parameter optimization model is built. Using genetic algorithm program written in MATLAB platform optimizes cutting parameters of efficient processing layer milling 508Ⅲ steel.And then, it makes simulation analysis and verification for optimized parameters of layer milling cutter. Using cutting simulation, it makes research of the change of cutting force, cutting temperature distribution and cutting tool states of the layer milling cutter, verifying the rationality of optimization parameters. And in the simulation of cutting force and in the constraint conditions of cutting tools, it makes modal analysis and statics analysis for new layer milling cutter structure, checking cutting tool structure and security of “tool-machine-artifacts” system.Finally, it conducts performance evaluation of the layer milling cutter. According to layer milling experiment, cutting performance evaluation index is determined. Based on the minimum and maximum principle of membership grade and weight-distributed set, using multistage comprehensive fuzzy theory evaluates cutting performance of milling 508Ⅲ steel in layer milling cutter.In this paper, structure design and optimization analysis of efficient processing layer edge milling cutter were researched. It has important theory meaning for the high efficient processing and cutting tool development of heavy cutting.