Molding method for patternless casting assembly based on bumpy ridge structure

摘要

A molding method for patternless casting assembly based on bumpy ridge structure is disclosed. A CAD model is subdivided into blocks according to features of a sand mold. A concave-convex bumpy ridge structure is designed on assembly surfaces of subdivided blocks of sand，and an assembly manner of the entire sand mold is determined. The blocks of sand are prepared and machined individually. The blocks of sand with bumpy ridge structure assembly surfaces are assembled. Exterior of the entire sand mold is fastened and prestressed, and the assembly of the sand mold is finished. The method can realize rapid assembly of the blocks of sand and prevent displacement between the blocks of sand.