Research On The Conformal 3D Printing Control System Based On Model Characteristics

With the development of advanced manufacturing technology,Fused Deposition Modeling process and Arc Welding Additive Manufacturing process have become the two most mature technologies in 3D printing technology,but there are two technology in the manufacturing process of the two main problems:(1)Within the print dangling hook structure,often need to add a lot of auxiliary support structure,the print the double waste of time and print materials,but if print exceeds limit critical Angle of the complicated structure,will appear unable to print the results.(2)Traditional opening source slicing software is mostly used for model segmentation,and the texture structure of the model is unidirectional consistency,resulting in poor mechanical properties of the formed parts.Therefore,in view of the problems existing in the traditional manufacturing process,this thesis proposes the 3D printing technology based on the model features.The specific research is as follows:(1)The kinematics equation of the 3D printing system was established.This thesis introduces the forming principle and mechanical structure characteristics of the 3D printing technology,and establishes the coordinate system of the 3D printing equipment based on this,and completes the establishment of the motion equation of the 3D printing system based on the theory of graphics transformation.(2)Designing the system hardware control circuit based on the modular concept.Designing peripheral circuit,temperature control circuit,communication circuit and stepper motor drive circuit module in circuit design software.My Printer upper computer software was used to print the model by manual programming to verify the feasibility of the hardware control circuit.(3)Based on the equal-layer slicing algorithm and the z-type filling algorithm,the path planning software of the 3D printing was designed.Path planning software includes slicing software and visual modeling software.The slicing software can adjust the attitude of each sub-model through translation and rotation of the working platform,and then realize the rotary displacement slicing of each sub-model.According to the cutting result file generated by the slicing software,the visual model software shows each step of the linear transformation of the working platform step by step,and dynamically displays the contour data of each sub-model in the form of nozzle trajectory.(4)Completing the construction of 3D printing system with shape,test the overall performance of the equipment through experiments,and conduct group comparison experiments with the traditional melt deposition process molding model according to different filling rates.The results show that the zero-support molding of complex structures exceeding the critical Angle of limit can be realized by using the conformal 3D molding process.The ultimate stress value is larger and the mechanical property is stronger.In this thesis,through multi-axis control cooperation technology,the forming technology of complex model structure with zero support is realized,which improves the forming efficiency and reduces the manufacturing cost.By means of the following path planning software,the mechanical properties of the molding parts in the molten deposition process can be improved to some extent,which has important theoretical significance and application value for 3D printing technology and rotary deflection technology.