Research On The Effect Of Asymmetric Cutting Edge Of Cutting Tool Passivation On Cutting Performance

With the development of high-speed and high-efficiency cutting,the cutting performance requirements of the tool are getting higher and higher.Tool edge passivation is to change the edge profile and shape by passivation to achieve improved cutting performance,extended tool life and improved workpiece surface quality.The edge of the tool passivation is usually simplified to fit a circle of the intersection of the front and back flank,which is the symmetrical edge,and the radius of the circle,that is,the radius of the blunt circle,is used to characterize the edge size.In fact,the shape of the cutting edge of the tool is more complicated,it may be symmetrical,or it may be asymmetric,not a regular arc,and the cutting edge size is micron.Therefore,reasonable tool passivation asymmetric cutting edge morphology is the basis for improving the cutting performance of the tool.It is of great theoretical and practical value to study the influence of tool passivation asymmetric cutting edge on cutting performance.In this paper,the finite element software AdvantEdge is used to simulate the cutting process of the tool's asymmetric cutting edge,and the tool passivation asymmetric blade shape factor,spindle speed,feed per tooth,axial depth is studied by combining with orthogonal cutting experiments.And the influence of radial depth of cut on cutting performance.In this paper,the vertical rotary passivation method is used to passivate the cutting edge of the cemented carbide tool.The three-dimensional modeling software Solidworks is used to establish the three-dimensional model of the tool passivation asymmetric cutting edge.The simulation model of the cutting process is established by the finite element software AdvantEdge.Single factor and orthogonal experiments were carried out to study the influence of shape factor,spindle speed,feed per tooth and axial depth on cutting force,and compared with the axial force and torque detected by the dynamic cutting force tester Spike.The influence of the tool passivation asymmetric cutting edge on the cutting force.Secondly,the effects of shape factor and cutting parameters on cutting temperature were studied by single factor and orthogonal simulation.The prediction model of cutting temperature was established.The correctness of the prediction model was verified by analysis of variance.Finally,the influence of shape factor and cutting parameters on residual stress is studied by orthogonal simulation.The influence of shape factor and cutting parameters on the surface roughness of the workpiece is studied by Calisum cr-4032 roughness measuring instrument.The chip morphology was compared and analyzed to study the influence of shape factor on chip morphology.The research in this paper provides a basis for revealing the mechanism of the tool passivation edge and lays a foundation for improving the cutting performance of the tool.