Abstract: In view of the high precision requirement of the 3D printer of denture and the limitation of the traditional extrusion molding equipment,a design scheme for the special extrusion system for 3D printer is proposed.SolidWorks Motion is used to simulate the movement of the key components of the system to verify whether it can meet the requirements of motion continuity and ensure the continuity of the discharge from the motion continuity.According to the mechanics theory calculation and the ANSYS FLUENT software fluid simulation,the key components are analyzed to verify the rationality of the design scheme and parameters.Finally,the feasibility and accuracy of the system are further verified by the prototype experiment.The results show that the motion of the key components conforms to the required motion characteristics,and the rationality of the design parameters and the feasibility of the scheme can also be confirmed,which lays the foundation for the later research on the control algorithm for the extrusion system.

Key words: ceramic slurry, extrusion system, the key components, fluid simulation, experimental prototype