Finite Element Analysis And Optimization Design Of CNC Quadrilateral Saw For Door Leaves

MJK6424H CNC Quadrilateral Saw for Door Leaves is one of the key equipment in the flexible production line for mass customization of wooden doors.It is mainly used for door leaf dimensions and directly affects the shape and position errors and production capacity of the door leaves.It forms a flexible production line for mass customization of door leaves with equipment such as edge sealing,door lock hinge grooves,milling,and robotic arms.Due to the lack of systematic analysis and design calculations in the design of the MJK6424 H door leaf CNC quadrilateral saw,there are shortcomings such as the overall design of the machine tool being cumbersome and the structure of the components being simple.In order to optimize the overall design of the machine tool,improve the component structure,and reduce manufacturing costs,a structural optimization design method was adopted for the lightweight design of the MJK6424 H door leaf CNC quadrilateral saw.This paper uses Ansys Workbench finite element analysis tool to systematically study and analyze the overall structure of MJK6424 H door leaf numerical control quadrilateral saw,focusing on the Statics and dynamic performance of key components such as the pillar,base,support,beam,etc.of the quadrilateral saw.On the basis of ensuring the strength and stiffness of the machine tool,with the minimum quality of the machine tool as the optimization objective,the topology optimization analysis method was used to optimize the topology design of the bracket,base,and cross saw base on the four sided saw.The sensitivity optimization design of the four sided saw column and longitudinal saw beam was carried out using multi-objective optimization method.The main results are as follows:1.By analyzing the working load,boundary conditions and geometric shape of the machine tool upper bracket,column,base,cross saw base and longitudinal saw beam,the 3D solid modeling of the main bearing parts of MJK6424 H was carried out using Solidworks.On the premise of ensuring that the main bearing parts meet their own geometric characteristics,mechanical performance and physical performance requirements,the optimization analysis model of the bearing parts was constructed.2.Using the Static Structural module of Ansys Workbench,a finite element static analysis was conducted on the main load-bearing components of the MJK6424 H door leaf CNC quadrilateral saw,and the strength and stiffness of the main load-bearing components were obtained.By analyzing the strength and stiffness of the quadrilateral saw,it was found that the main load-bearing components of the quadrilateral saw have a certain ability to resist external load damage and deformation.It was found that the original overall design was redundant with the main load-bearing components,which increased manufacturing costs.3.Using the modal analysis module of Ansys Workbench,finite element dynamic analysis was conducted on the main load-bearing components of the MJK6424 H CNC quadrilateral saw.The first six natural frequencies and vibration modes of the main load-bearing components were obtained.By comparing them with the self-excited vibration of the machine tool during operation,it was found that the first-order natural frequencies of each load-bearing component were relatively high.During machine operation,each load-bearing component did not resonate,and structural optimization design of the machine tool could be carried out.4.Using the topology optimization module of Ansys Workbench,with the overall quality of the structure as the response constraint,the optimization goal was set to 60%.Topological analysis was conducted on the upper bracket,base,and cross saw base of the MJK6424 H CNC quadrilateral saw,and it was found that topology optimization design can be carried out on some load-bearing components of the CNC quadrilateral saw while ensuring structural stability.5.Sensitivity analysis was conducted on columns and longitudinal saw beams using Ansys Workbench’s Response Surface Optimization module,and the effects of different parameters on mass,stress,strain,and deformation were studied;Based on the sensitivity analysis results,multi-objective optimization analysis was conducted on the columns and longitudinal saw beams to obtain the optimal optimization plan.According to the results of topology optimization and multi-objective optimization analysis,Solidworks is used to modify the main bearing structure of the NC quad saw,and the Statics and dynamic characteristics of the modified structure are analyzed.The results show that under the premise of ensuring the strength and stiffness of the quad saw,the main bearing components of the quad saw can be optimized according to the analysis results,Comparing the optimized results with those before optimization,the following conclusion can be drawn: while ensuring the performance of the four sided saw,the weight of the upper bracket is reduced by 10.3%,the weight of the base is reduced by 8.5%,the weight of the cross saw base is reduced by 6%,the weight of the saw crossbeam is reduced by 18.6%,the weight of the column is reduced by 4.6%,the overall weight of the four sided saw is reduced by 9.19%,and the manufacturing cost is reduced by about 8%.