| Manufacturing is the pillar industry of China’s economy.With the continuous progress and development of modern technology,manufacturing has established its important position in economic development.The tool consumption market is an important part of the development of China’s manufacturing industry.The ball-end end milling cutter has been widely used in the manufacturing industry due to its excellent cutting performance,high efficiency,long life,safety and adaptability,providing a strong support for improving the quality of the workpiece.Although the structure of ball-end milling cutter is complex,3D modeling is difficult and design efficiency is low,parametric design can effectively improve its 3D modeling ability,thus promoting the development of tool design.The milling force of the ball-end milling cutter has a vital impact on the overall quality of the processed parts,and is one of the important factors to improve the overall quality of the processing and the efficiency of the processing time.Taking the superhard ball-end milling cutter as the research object,this paper uses Creo parametric design,finite element simulation and experimental verification to study the 3D modeling,parametric design and the influence of relevant parameters on the milling force of the superhard ball-end milling cutter.The research in this paper is of great significance to the rapid design of superhard ball end mills and the iterative upgrading and comprehensive optimization of cutting tool products.The main research contents are as follows:(1)This paper summarizes the research background and current research situation at home and abroad of the design and manufacture of superhard NC tools and the milling force of ball-end end mills,introduces the research status and development trend of the CAD technology and CAE technology of superhard NC tools,and expounds the main research purpose and significance of this topic.(2)Parametric design of standard and non-standard ball-end milling cutters is realized based on Creo 3D modeling software.Through the Creo/Program parametric design method,the 3D model of the two-tooth and four-tooth ball-end milling cutter can be quickly established,and the Creo family table method can be used to build the standard part library,and the main parameters of the end milling cutter can be retrieved or modified,so as to realize the rapid design of the superhard ball-end milling cutter,providing more possibilities for the manufacturing industry.(3)Research on milling force and cutting simulation of ball-end milling cutter based on Abaqus.The mathematical model of the milling force of the ball-end milling cutter is established.Based on the parametric design of the ball-end milling cutter,the tool models with different parameters are introduced into the Abaqus finite element analysis software.The JC constitutive model is used to set the tool material and workpiece material.The finite element simulation model of the two-tooth ball-end milling cutter is established,and the cutting simulation is carried out to obtain the threedimensional milling force result diagram and stress distribution diagram.(4)Verification experiment of finite element simulation model of ball end mill.According to the cutting tool parameters and machining parameters in the cutting simulation,the correctness of the finite element simulation model of ball end milling cutter is verified through milling experiments.With the same tool parameters and machining parameters,the YCM-V65 A vertical three-axis machining center and Kistler dynamometer were used to conduct the cutting experiment of the two tooth ball end milling cutter,and the experimental data were obtained through post-processing at the PC end;The experimental data and simulation data are compared and analyzed to verify the correctness of the finite element simulation model,and the causes of errors are analyzed.(5)Based on ABAQUS,the research on the influence of the relevant parameters of the four tooth ball end mill on the milling force.The simulation model of ball end milling cutter verified by experiments can replace cutting experiments to further analyze the influence of machining parameters and cutter parameters on milling force.Based on Abaqus finite element analysis software,the simulation model of four tooth ball end milling cutter is established.The cutting simulation of the cutter is carried out by changing the cutter parameters and processing parameters.According to the size of the milling force and the change of the stress diagram,the influence law of the cutter parameters and processing parameters on the milling force is analyzed,which provides theoretical guidance for how to select reasonable cutter parameters and processing parameters in the actual processing of the ball end milling cutter. |
PDF Full Text Request