Dynamic Characteristics Analysis Of High-speed Angular Contact Ball Bearing Based On Improved Artificial Bee Colony Algorithm

Steel production is an important indicator to measure the development level of a country's manufacturing industry.In all steel production,the main ore smelting steel,and then continuous casting or die casting form to produce billet,finally using different rolling process to produce steel for various purposes.In the above production process,the blank cutting technology directly affects the work efficiency of the production line.In the steel tube production line,the billet is mainly cut by the relative motion of the upper and lower cutting edges.However,the existing shear method is fast,but the shear section is not neat,it is difficult to directly perforate;If the method of hot saw is adopted,the section is neat,but the speed is too slow to meet the requirements of production rhythm and online production temperature.Therefore,based on the shearing principle and sawing mechanism,this paper puts forward the sawing and shearing mechanism,mainly combining with the working characteristics of the shearing and sawing processes,aiming to improve the flatness of the shearing surface on the basis of improving the shearing speed,so as to provide the possibility for the direct on-line perforation of the hot billet.In this paper,theoretical research,finite element numerical simulation and experimental means are used to study the tooth shape optimization of saw blades of sawing and shearing machines in detail.The main research contents and results are as follows:(1)based on the metal sawing principle and the punching,cutting and cutting principle,the force and energy parameters in the process of GCr15 circular steel were calculated,and the relevant sawing force and shear data were obtained,which provided a theoretical basis for the tooth shape research and simulation analysis.Secondly,based on the basic assumption that sawtooth is the cantilever beam structure,the tooth profile equation is obtained by using the mechanics of materials and the solution,and the shear force and bending moment of any crosssection of sawtooth are obtained.(2)in combination with the actual sawing and shearing process,ABAQUS finite element numerical simulation technology was used to control the single variable method to simulate the influence of the tooth front Angle,the tooth back Angleand the tooth root circle radius on the sawing and shearing effect.The modeling method of saw-shear model is introduced.The stress distribution under the influence of different tooth shape parameters is analyzed and the optimal tooth shape structure parameters are obtained.(3)through theoretical derivation and finite element numerical simulation,the optimal tooth shape parameters were obtained by studying the process of GCr15 circular steel sawing and shearing.Experimental methods were used to verify the above research.(4)the forces and stresses of different process parameters under theoretical,finite element simulation and experiment were compared,their trends were studied,and the reasons for this trend were analyzed.At the same time,the causes of the errors are analyzed.