Research on Cutting Edge Geometry Optimization and Life Improvement of Carbide Milling Tools
As one of the most important evaluation links in the high-end manufacturing,tool life can directly affects cutting efficiency and enterprise benefits. The macro geometry of the tool is one of the important factors affecting its cutting life. However,as the direct contact area between the workpiece and the tool,the micro structure of cutting-edge is also a fetal factor affecting the tool life. In this paper,carbide milling cutters with symmetrical and asymmetrical cutting-edge geometries are prepared by vertical rotational passivation method. Through the comparative analysis of AISI1045 steel mill-ing experiment,the influence of different cutting-edge geometries on tool life is studied. The optimized design of the cutting-edge geometry of the tool is reached. The experimental results show that the surface morphology quality of the micro cutting-edge after passivation treatment is significantly improved. The difference in passivation rate between flank face and rake face is the key factor in forming different cutting-edge structure. The groove wear is the main wear model under different micro cutting-edge structures. Optimized milling cutters can effectively suppress tool chipping and slow down the rate of tool wear. The optimized scheme with shape factor K of 0.5 and round radius R of 11μm increase the tool life signifi-cantly by 25％.
万方数据
维普
