Compression molding method, rigidity increasing position determination method, compression molding system, and compression molding product

Abstract

The object of the present invention is to provide a compression molding method capable of efficiently suppressing springback and easily identifying a position where the springback reduction effect due to increased rigidity is large, and is used when molding a molded product of a predetermined shape from a plate-shaped material. The compression molding method of the present invention includes the following steps: change the constrained position, repeat the springback analysis using the analytical model that performs the following processing, and determine the first position where the springback reduction effect due to the increase in rigidity is large. A process in which rotation is allowed while restricting expansion and contraction deformation at a specific position of the molded product model having the above-mentioned predetermined shape, thereby imaginarily improving rigidity; A second step of implementing a rigidity-improving measure at a position corresponding to the position determined in the first step; a third step of compression-molding the molded product from the plate-shaped material subjected to the rigidity-improving measure.

Description

technical field [0001] The present invention relates to a compression molding method for reducing springback occurring in compression molding of a sheet-like material including a plurality of molding steps and improving the dimensional accuracy of a compression-molded product, a method for determining a rigidity-enhancing position of a sheet-like material, and a compression molding system And a compression molded product formed by the compression molding method. Background technique [0002] In recent years, the application of high-strength steel sheets has been expanding in order to reduce the weight of automobile bodies for the purpose of improving fuel efficiency. By applying high-strength steel sheets, it is possible to increase the strength, rigidity, and energy absorption during collisions of automobile bodies without increasing the thickness of the sheets. [0003] However, in compression molding, which is often frequently used in the processing of body parts, a shap...

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Problems solved by technology

[0003] However, in compression molding, which is commonly used frequently in the processing of body parts, poor shape freezing called springback has become a problem.

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