Wear prediction method for fine blanking dies based on finite-element technique and artificial neural network

Abstract

The invention relates to the technical field of fine blanking, in particular relates to a wear prediction method for fine blanking dies based on a finite-element technique and an artificial neural network. The method provided by the invention comprises the following steps: building a finite-element analysis model, namely, simulating a fine blanking process on a finite-element analysis and calculation platform, and calculating the wear extent of a fine blanking die in the fine blanking process by using an Archard wear model; building a neural network model, namely, training a designed neural network model by using a finite-element analysis result guided by an orthogonal experimental design so as to obtain a functional relation between the wear extent of the fine blanking die and fine blanking parameters; obtaining the fine blanking parameters, namely, obtaining the functional relations between the fine blanking parameters and the wear extent, blanking time, and the like of the fine blanking die according to geometrical relationships and production practices; and building and simulating a fine blanking wear prediction model. The method provided by the invention has the advantages of high prediction precision, fast response speed and strong operability.

Description

technical field [0001] The invention relates to the technical field of fine blanking, in particular to a fine blanking die wear prediction method based on finite element technology and artificial neural network. Background technique [0002] Fine blanking (referred to as fine blanking) technology can produce blanking parts with high cross-sectional quality and good mechanical properties through a single step process, eliminating the subsequent processing steps, greatly improving production efficiency and reducing production costs. At present, the technology is widely used in motorcycles, automobiles and aerospace fields. The special process conditions of fine blanking: the blank holder with V-shaped ring gear, high blank holder force, high counter-top force and small blanking gap make the wear degree of the fine blanking die far greater than that of the blanking die. Die wear degree during ordinary blanking process. When the wear amount of the fine punching die reaches a c...

AI Technical Summary

Problems solved by technology

It is obviously inaccurate to use the die wear amount at the first blanking instead of the average wear amount of the die during the entire service period to guide production and die repair, and cannot guide die repair in a timely and effective manner and ensure the quality of fine blanking parts

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