Research On System Design And Control Process Optimization Of Parallel-mechanism 3D Printer

3D printing technology is an advanced additive manufacturing technology developed in the late 1980 s,which is characterized by advantages like low processing cost and easy use.This paper takes the parallel structural 3D printing equipment as the research object,and probes into its motion system,electrical control system and key parameters affecting print quality.It designs the overall scheme of the 3D printing mechanical system based on the parallel structure based on the analysis of the structural characteristics and technical principles of 3D printing equipment with the FDM process.Determines the system structure form,transmission form and platform construction design through three-dimensional modeling and analysis.Focusing on the warping deformation and optimization of the molded parts and adopts the 3D modeling software SolidWorks to simulate the main components in the design scheme to construct the 3D virtual assembly model of the whole system,and complete manufacturing of the prototype on this basis.It completes the design of the drive control system of the FDM(Fused Deposition Modeling)parallel structural 3D printing equipment,designs control algorithms for the drive,completes the design of the temperature control system and verifies the reliability of the algorithm via the simulation model of established temperature control system.According to the principle of FDM technology,the paper completes the design and development of 3D printing slicing software.According to the principle of FDM technology,the paper completed the design and development of slicing software of 3D printing,focusing on the processing method of self-intersection and breakpoint phenomenon in pattern offset,and proposing a transformation algorithm for trajectory angle filling to improve the slicing efficiency.It establishes a kinematics model of the dynamic platform positioning of the parallel structural 3D printing equipment,and calculates the maximum construction area of the equipment.It explores the influence of the platform error and the calculation error on the print quality,optimizes the hardware control parameters,and verifies the optimized effect of part molding through experiments.It studies the influence of control parameters on print quality through orthogonal test analysis and proves that the precision of 3D printing equipment can be significantly improved after parameter optimization through experiments.