Research of 3D Printing Self-support Technology Based on DFM

摘要

Compared with the traditional processing molding, 3D printing (Additive Manufacturing) is a technology for the near-net shape of complex three-dimensional components and FDM (fused deposition modeling) is one of the widely used additive manufacturing technologies. The auxiliary supporting structure is needed to position and support the cantilever structure in the forming process of the cantilever structure in FDM. The traditional complete supports forming process needs more time, has high consumables and low efficiency, and limits the application of the FDM. The paper analyzes forming characteristics in the forming process and designing cantilever supports structural based on DFM (design for manufacturability). Confirming critical state of FDM process with analyzing FDM support characteristics by establishing mathematical model, analyzing cantilever structural of the different angles in FDM, and changing support structure of cantilever model of different angles. Designing and manufacturing the corresponding self-supporting cantilever in FDM. The research provides a design method for cantilever support, improving sprinting efficiency and develops researches of DFM.