Research On The Milling Performance Of Ball-End Milling Cutter Under The Combined Action Of Micro-Texture Of Rake And Flank Faces

Titanium alloy are essential for high-end manufacturing.However,due to its high chemical activity and low thermal conductivity,the processing performance of titanium alloy is limited.The results show that different tool micro-texture placement area will produce different effects.The micro-texture of tool rake face can improve the chip contact characteristics of tool and improve the chip performance of tool,and tool flank of tool is the main factor affecting the tool contact characteristics,thereby improving the cutting performance of the tool;while the tool flank mainly affects the tool contact.state,thereby constraining the machining quality of the workpiece.Most scholars focus on the cutting behavior of cutting tools with rake or flank micro-textures alone,and rake and flank micro-textures can jointly improve tool service indications.Therefore,based on the milling of titanium alloy by ball end milling cutter,this paper conducts micro-texture modeling on the surface of cemented carbide tool,and comprehensively considers the evolution law of cutter milling behavior and workpiece surface quality under the joint action of front and rake and flank faces micro-textures,in order to The cutting performance of the tool has been improved and a higher processing quality of titanium alloy has been realized.Firstly,the energy theoretical models under the action of the micro-texture on the rake and flank faces of the tool are respectively established,and the mechanism of the insertion of the micro-texture on the tool surface on the friction energy of the machining deformation zone is analyzed based on the angle of energy loss,so as to prove the effect of the micro-texture insertion.effectiveness.According to the chip and tool contact relationship of the ball-nose milling cutter during the machining process,the micro-texture placement area of the rake and flank faces is determined,which provides a theoretical basis for the subsequent orthogonal experiment designed with micro-texture parameters.Secondly,considering the micro-texture parameters of the rake and flank faces,the orthogonal experiment was designed,and the finite element simulation software was used to analyze the influence of the change of the micro-texture parameters of the rake and flank faces on the force-thermal characteristics in the milling process,reveal its internal mechanism,and based on the comprehensive the balance method is used to optimize the micro-texture parameters.Based on this,the effects of rake face microtexture,flank micro-texture,and rake face micro-texture on tool milling force and milling temperature were compared and analyzed.Finally,an experimental platform for milling titanium alloy was built to investigate the sensitivity of micro-texture parameters to tool milling behavior and workpiece surface roughness,and analyze its mechanism.Based on the matrix analysis method,the influence weight of each factor level on the cutting performance of the tool is analyzed.Taking the reduction of milling force,workpiece surface roughness and tool wear as the evaluation indexes,the combination of micro-texture tool parameters on the rake and flank face is obtained.