Method for improving plate stamping qualification rate through digital-analog simulation analysis of real die

Abstract

The invention relates to a method for improving the plate stamping qualification rate through digital-analog simulation analysis of a real die, and belongs to the technical field of plate stamping forming. According to the technical scheme, a 3D laser scanner is adopted for scanning a stamping die surface of a die, and three-dimensional coordinate cloud points of the die surface of the die are obtained; then, reverse processing and error analysis are conducted on the three-dimensional coordinate point cloud of the mold through Geomagic Qualify / CatiaCAD software to obtain a digital model of thereal state of the mold; finite element simulation analysis is carried out by taking a digital model of the real state of the die as a tool body, the condition of a part stamping site is restored to the maximum extent, and risks existing in the part stamping forming process are evaluated. The method has the advantages that the simulation result can effectively restore the actual state, reference suggestions are provided for technological parameter adjustment or mold profile optimization, the targeting performance is high, the period is short, the risk is small, and the cost is low.

Description

Technical field[0001]The invention relates to a method for improving the qualification rate of sheet metal stamping by adopting real die digital model simulation analysis, and belongs to the technical field of sheet metal stamping forming.Background technique[0002]With the rapid development of the automobile industry, the update speed of new models is getting faster and faster, the number of stamping parts in the body is increasing, the degree of diversification of structure types is getting higher and higher, and the frequency of mold use and modification is getting higher and higher. Cracking and wrinkling problems occurred during use; with the continuous improvement of light weight, the application proportion of high-strength steel materials is increasing day by day, and the risk of cracking of safety structural parts during the replacement of high-strength steel is also increasing. The current solutions to this type of problem often rely on on-site stamping engineers to adjust s...

AI Technical Summary

Problems solved by technology

The current solutions to such problems often rely on the on-site stamping engineers to adjust the stamping process parameters (blank-holding force, stamping speed, ejector pin height, etc.) The requirements are very high, and it is time-consuming and risky

In recent years, the advantages of finite element simulation analysis methods have become increasingly prominent. Computers can be used to predict in the early stage, which can effectively reduce the repair period and cost. However, the mold has a large deviation from the original design of the mold due to wear or repair during the debugging and use process. , the finite element simulation results using the original design digital model cannot reflect the actual situation of the production site, and cannot provide effective reference suggestions

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