Abstract: Current CAD software provides only a unified shrinkage and does not meet the design requirements of complex parts which have different shrinkage in same direction. Aiming at this problem, Moldflow was used as a data measurement platform to simulate the deformation of product. A method for modification of injection mold cavity size based on reconstruction of product model was proposed. Reconstruction of this model provided a way to improve the relationship between cavity and product, could control the non-uniform contraction of parts, thus to enhance the size precision and reduce the repair of model.

Key words: injection molding, analog simulation, cavity size