Abstract: The accurate controlling of the scraper in large bump flattening machine for polymer powder was realized by the synchromechanism of turbineworm. The deformation of the main girder structure was avoided through designing the welding sequence reasonably. Then the precision control mechanism was made. Finite element analysis (FEA) was utilized to optimize the structure of the prototype. The optimized structure was lighter, and showed good prospect in industry application.

Key words: compression molding, polymer powder bumps flattening machine, powdery polymer material, strength, structural optimization