Stamping covering part springback analysis and compensation method based on AutoForm software

Abstract

The invention relates to the technical field of analogue simulation methods, in particular to a stamping covering part springback analysis and compensation method based on AutoForm software. The stamping covering part springback analysis and compensation method comprises the steps that simulation analysis and sigma robustness analysis are conducted on a covering part tool body, and an optimized full-process scheme and an optimized clamping scheme are obtained through repeated iterative adjustment; a springback compensation result of the tool body is obtained according to the full-process scheme and the clamping scheme; a reconstructed tool body profile is redrawn according to a compensated tool body profile exported by the AutoForm software; and press deflection compensation work is conducted according to the reconstructed tool body profile and press equipment parameters, and final die machining data are obtained after compensation is completed. According to the stamping covering part springback analysis and compensation method based on the AutoForm software, the sigma robustness analysis process is introduced into a traditional springback compensation analysis method, the reasonable fluctuation conditions of various key elements in actual production are fully considered, thus the process scheme closer to the real condition is obtained, and the formability problems of cracking, wrinkling and the like are avoided.

Description

technical field [0001] The invention relates to the technical field of simulation methods, in particular to a springback analysis and compensation method for stamping cover parts based on AutoForm software. Background technique [0002] Springback refers to the phenomenon that the material in the plastic deformation zone deforms the part due to residual stress after the external load is removed during the sheet forming process. Springback is a common phenomenon in the sheet metal forming process, which directly affects the dimensional accuracy of stamping parts and the final shape of parts. [0003] In the early stage of mold development, there are usually two springback control schemes: [0004] 1. Based on past project experience, determine the springback area and springback amount of the part, and make a corresponding compensation plan; [0005] 2. With the help of finite element analysis software, simulate and analyze the springback state of the part, and then perform ...

AI Technical Summary

Problems solved by technology

[0008] In actual production, the material thickness, yield strength, tensile strength, and friction coefficient of sheet metal are not a single fixed value, but fluctuate within a range, while the material parameters set in the finite element analysis software are a fixed value, which means This leads to the phenomenon that the simulation analysis does not match the actual situation;

[0009] In actual production, the blank holder force of the press fluctuates and

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