Study on Effect of Tool Tip Microstructure on Surface Quality of GCr15 Bearing Ring in High Speed Hard Turning
High speed hard turning is one of the key technologies to realize high efficiency and precision machining of bearing rings.However,bearing rings have the characteristics of high hardness,high strength and thin wall,leading to diffi-culties such as rapid tool failure and poor surface quality in high speed hard turning.Therefore,this article takes high-speed hard turning of GCr15 thin-walled bearing rings with PCBN tools as the research object.Through single factor basic cutting experiments,the influence of tool tip microstructure such as the wiper edge width and the tool nose radius on cutting force and cutting temperature is explored.On this basis,orthogonal experiments are conducted to compare and analyze the effects of microstructure parameters of the tool edge,cutting speed,feed rate,and other cutting parameters on the surface roughness and residual stress of the machined surface.And optimize the process parameters to provide key technology and data support for efficient and high-quality processing of bearing rings.
GCr15 bearing ringwiper edgetool nose radiussurface roughnesssurface residual stress
万方数据
维普
