Research On Light Curing 3D Printing Technology Based On Digital Micro Mirror Array

3D printing is a new additive manufacturing technology.In recent years,the development of additive manufacturing technology using intelligent algorithm has attracted extensive attention of researchers.Compared with other printing technologies,3D printing technology based on digital micro mirror array has the outstanding advantages of high printing accuracy and low printing efficiency.Therefore,this paper takes the adaptive hierarchical algorithm and intelligent path planning algorithm as the research object,and applies them to this technology to improve the printing quality and efficiency.The main research contents are summarized as follows:(1)Research on adaptive layering algorithm.The parts need to be layered before printing,and the layered quality is the key factor affecting the printing quality and printing efficiency.The thinner the layer is,the higher the printing quality of the workpiece is,and the lower the printing efficiency is.In order to adjust the contradiction between printing efficiency and printing quality,an improved algorithm based on STL minimum normal vector is proposed.Five different printing methods were used to print the same part,and then the printing performance was tested.Experimental results show that this algorithm can effectively balance the relationship between print quality and print efficiency,and is better than the control algorithm in print time,step volume error and layering time.The printing time is reduced by 8.7% at most,the step volume error is reduced by 16.5% at most,and the layering time is reduced by 41.5% at most.The proposed layered method can effectively reduce the execution time of the algorithm and improve the printing efficiency under the condition of ensuring the printing quality.(2)Research on intelligent path planning algorithm.3D printing equipment based on digital micro mirror array often uses parallel reciprocating scanning to project and expose photosensitive resin in the printing process.However,the coordinates that do not need to be exposed may pass during the scanning process,resulting in redundant printing paths and affecting the printing efficiency of the workpiece.To solve the above problems,this paper uses an improved ant colony algorithm based on AP clustering to optimize the printing path.Three different printing methods were used to test the printing of the same printed part.Experimental results show that compared with IAPACA algorithm and KC-IACA algorithm,this algorithm saves 10.17% and 6.52% paths respectively.The algorithm can effectively shorten the printing time and optimize the printing efficiency.Through the research on 3D printing technology based on digital micro mirror array,this paper optimizes the layering and printing path in the printing process,which can improve the printing quality and printing efficiency,and provide a reference scheme for 3D printing technology based on digital micro mirror array in large-scale manufacturing.