Development Of Control System And Process Optimization Of Industrial Grade 3D Printer Based On FDM Technology

3D printing is a kind of rapid prototyping manufacturing,which is suitable for producing products with complex shapes and small quantities.It has become the technical direction of strategic development of countries around the world.With the development of technology,there appears many technologies in 3D printing.FDM technology with its advantages of environmentally-friendly,low power consumption,low cost,and material widely accessible,is widely welcomed by the majority of scientific research personnel and technology enthusiasts.It is currently the most widely used technology and has the most data and the the lowest technical threshold,especially in desktop applications.However,industrial grade FDM 3D printer still need to be developed.Based on school-enterprise cooperation,this paper has developed an industrial 3D printer based on FDM technology and optimized the process.First developed control system for this printer.The control system can divide into modules according to the function.Explained the design idea of each module,and the difference with a desktop printer as well as the electronic electrical principle and software algorithms to realize the function.Second the process of 3D printing slicing algorithm is analyzed,and a kind of path planning algorithm with gradient contours offset is put forward based on isometric contour offset algorithm,which adopts gradient speed and spacing and promotes printing efficiency and saves materials.Then optimization is conducted using taguchi method on five main technology parameters include extruder temperature,oven temperature,printing speed,layer height,and nozzle diameter.Analyzed the influence degree of these parameters on the printing accuracy and efficiency and the optimal combination is selected.Finally,the possible reasons are analyzed,and feasible solutions are proposed for six kinds of printing faults and printing defects.