Mechanical model building method based on mould temperature rise rate under condition of continuous plastic processing and production and application thereof

Abstract

The invention relates to a mechanical model building method based on mould temperature rise rate under the condition of continuous plastic processing and production. The method is based on a basic mechanical model of mould temperature rise rate under the condition of continuous production. Data samples are established using a finite element approach, the corresponding relation between mould temperature increment and mould real-time temperature in a single processing cycle is determined through regression analysis, and finally, a mould temperature rise curve under the condition of continuous production is calculated through numerical integration. On the basis, mould thermal deformation and punch-die clearance change are analyzed through a finite element approach to guide the practical process scheme. Compared with the traditional method carrying out direct simulation through a finite element approach, the method only needs a plurality of times of finite element calculation, a large amount of calculation time and cost are saved, the error accumulation problem of the traditional method is avoided, and the calculation accuracy is improved greatly. Therefore, an effective way is provided for current solution of the mould temperature rise problem under the condition of continuous plastic processing and production.

Description

Technical field [0001] The invention belongs to the technical field of metal plastic forming process analysis methods. Background technique [0002] With the large-scale development of modern industry, automatic transmission lines in plastic processing production have become more popular, and technological innovations such as stamping multi-station progressive dies and forging robots have emerged, which greatly enhanced the continuous mass production capacity of plastic processing technology. So as to ultimately improve production efficiency and reduce labor costs. Under intensive continuous production conditions, molds are not only prone to problems such as surface wear and fatigue fracture, but also often increase in mold temperature. This is because in the plastic processing process, the mold surface and the blank surface friction generate heat, and the plastic deformation work of the blank is mainly converted into heat, and a small part of the heat will be transferred to the...

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Problems solved by technology

[0004] The purpose of the present invention is to propose a solution combining finite element simulation and mechanical analysis in order to solve the current inability to accurately analyze the temperature rise of the mold under the production conditions of continuous plastic processing

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