Research On The Influence Of Passivation Morphology On The Cutting Performance Of Cemented Carbide Tools

With the development of mechanical processing technology,machining equipment is developing towards intelligence,modularization,integration,etc.,which greatly improves the processing quality and processing efficiency,but if you want to further improve the processing quality and processing efficiency,you must The "teeth" for in-depth research.Tool passivation technology,as a processing method to improve tool machining performance,is widely used by tool manufacturers and tool users due to cheap equipment,low processing conditions and strong operability.The cutting edge of a passivated tool is very complicated,and it may be symmetrical or asymmetrical,mostly asymmetrical,not a regular arc.Because the cutting edge of the tool belongs to the micron level,in order to facilitate the description in the research process,the passivated symmetrical cutting edge is expressed by the cutting edge contour fitting the arc radius of the circle,and the asymmetrical cutting edge uses the shape factor and front and rear The blade passivation value is expressed.Since the different cutting edge shapes have different effects on the cutting performance of the tool,it is of great theoretical value and practical significance to study the influence of the passive shape on the cutting performance of the cutting tool.In this paper,based on the characteristics of the cutting process of the tool,based on the metal cutting principle and the slip line theory,a theoretical model of the cutting force of the symmetrical passivated cutting edge tool is established.The Third Wave Advant Edge cutting simulation is used to establish the milling simulation test model.The simulation simulation and milling experiment research The change rule of cutting force during the milling process of symmetrical passivated edge shape cutters verified the theoretical model of cutting force and proved the correctness of the theoretical model.In order to further study the cutting performance of the asymmetric passivation cutting tool during the milling process,the vertical rotary passivation machine was used to prepare the milling experimental tool according to the influence of the passivation parameters on the cutting tool cutting tool.Based on the Usui wear model,the Deform-3D simulation software was used to establish the milling simulation model to study the changes of cutting force,tool wear,cutting temperature and residual stress on the workpiece surface during the milling process of the asymmetric passivated edge shape tool,and establish the corresponding index The prediction model and single-factor milling experiment and orthogonal milling experiment were used to verify the correctness of the simulation results of tool wear and cutting force in the simulation test.