Finite Element Analysis And Optimization Design Of Three Coordinate CNC Engraving Machine

CNC engraving machine is a class of CNC machine tools, which was developed fromCNC technology and carving. Compared with hand-carved sculpture and profiling, CNCengraving machine is better in terms of production efficiency, precision and yield, etc.,and it has strong adaptability to machine parts. With the development of modern industrialtechnology, security requirements of reliability optimization of CNC engraving machineneed to be improved, and require be further in-depth studied. It will be great practicalvalue on the optimization of structure and improve production efficiency.This thesis describes the structure and principle of CNC engraving machine coordinate,analyzes and optimization designs the control system, and finite element analyzes andoptimization designs CNC engraving machine beams.CNC engraving machine controlsystem environment and technical features were identified, and interpolation principle ofengraving machine, acceleration control and speed optimization control were anylzed.CNC engraving machine geometry and boundary conditions were studied. Combination ofproduct structure, the finite element model of engraving machine was established. Use ofstatic analysis, tequivalent stress and structural deformation were achieved.Torquetransmission process was analyzed, and the static characteristics were analyzed by staticanalysis. Whole machine and machine beams were analyzed by modal analysis andharmonic response analysis, and first four natural frequencies and mode shapes as well askey parts of frequency response curve were gotten. Optimal value of lateral and posteriorwalls was gotten based on structural characteristics of machine beams and static anddynamic characteristics analysis results, and its static and dynamic characteristics wereimproved, thereby overall performance was improved.The thesis based on technical parameters of a model of CNC engraving machinecoordinate, and used the above calculation and analysis methods and optimized thestructure of machine beam according to the results. The machine was running smoothlyand no other fault had occurred. The design methods of structural optimization for modalanalysis and harmonic response analysis of CNC engraving machine was feasible and hadpractical significance.