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Automotive Mould Design Reliability, Reduced Test Time

Jie Mei Precision Mould Ltd | Updated: Jul 07, 2017

First, the stamping process simulation (CAE) role is more prominent

In recent years, with the rapid development of computer software and hardware, stamping process simulation technology (CAE) play an increasingly important role. In the United States, Japan, Germany and other developed countries, CAE technology has become a necessary part of the Automotive Mould design and manufacturing process, widely used to predict the forming defects, optimize the stamping process and Automotive Mould structure, improve the reliability of Automotive Mould design and reduce the test time.

Many domestic Automotive Mould enterprises in the CAE application has also made significant progress, get a good effect. CAE technology can greatly reduce the cost of test mode, shorten the development cycle of stamping die, has become an important means to ensure the quality of the Automotive Mould. CAE technology is gradually turning Automotive Mould design from empirical design to scientific design.

Second, Automotive Mould three-dimensional design status to be consolidated

The three-dimensional design of the Automotive Mould is an important part of the digital Automotive Mould technology, is to achieve Automotive Mould design, manufacturing and inspection integration basis. Japan Toyota, the United States and other companies have achieved the three-dimensional design of the Automotive Mould, and achieved good results. Abroad in the Automotive Mould three-dimensional design to take some of the practice worthy of our reference. In addition to the three-dimensional design of the Automotive Mould is conducive to the realization of integrated manufacturing, the other advantage is to facilitate the interference check, can be carried out by the motion interference analysis to solve the two-dimensional design of a problem.

Third, the digital Automotive Mould technology has become the mainstream direction

In recent years has been the rapid development of digital Automotive Mould technology, is to solve the development of automotive Automotive Moulds faced by many of the effective ways. The so-called digital Automotive Mould technology, is the computer technology or computer-aided technology (CAX) in the Automotive Mould design and manufacturing process applications.

Summary of domestic and foreign automotive Automotive Mould enterprises using computer-aided technology, the successful experience of digital automotive Automotive Mould technology, including the following:

① manufacturability design (DFM), that is, in the design to consider and analyze the manufacturability, to ensure the success of the process.

② Automotive Mould surface design of the auxiliary technology, the development of intelligent surface design technology.

③ CAE auxiliary analysis and simulation of the stamping process, to predict and solve the possible defects and forming problems.

④ with three-dimensional Automotive Mould structure design to replace the traditional two-dimensional design.

⑤ Automotive Mould manufacturing process using CAPP, CAM and CAT technology.

⑥ under the guidance of digital technology to solve the test process and stamping production problems.

Fourth, the rapid development of Automotive Mould processing automation

Advanced processing technology and equipment is an important basis for improving productivity and ensuring product quality. In the advanced automotive Automotive Mould enterprises, with a dual table of CNC machine tools, automatic tool changer (ATC), automatic processing of the photoelectric control system, the workpiece on-line measurement system is not uncommon. CNC machining has been developed by a simple surface processing to the surface and structural surface of the comprehensive processing, from low-speed processing to the development of high-speed processing, processing automation technology is developing very rapidly.

Fifth, high-strength steel stamping technology is the future direction of development

High strength steel has excellent characteristics in the use of automobile in terms of yield ratio, strain hardening characteristic, strain distribution ability and impact energy absorption. At present, the use of high-strength steel stamping parts are mainly hardened steel (BH steel), duplex steel (DP steel), phase change induced plastic steel (TRIP steel) and so on. 97% of the advanced concept vehicle (ULSAB-AVC) is a high-strength steel, and the proportion of advanced high-strength steel sheet in the vehicle will exceed 60%, and the proportion of duplex steel Will account for 74% of automotive steel. Now, a large number of IF steel-based series of mild steel will be replaced by high-strength steel plate series, high-strength low-alloy steel will be dual-phase steel and ultra-high strength steel instead.

At present, the application of high-strength steel parts of domestic auto parts is also limited to structural parts and beam parts, the tensile strength of materials used in more than 500MPa below, therefore, quickly grasp the high-strength steel stamping technology, China's Automotive Mould industry needs to be solved important question.

Six, new Automotive Mould products timely introduction

With the development of automotive stamping production and automation, progressive die in the production of automotive stamping parts will be more widely used. The complex shape of the stamping parts, in particular, according to the traditional process requires multiple die re-order of small and medium-sized complex stamping parts, more and more use of progressive die forming.

Progressive die is a high-tech Automotive Mould products, technical difficulty, high precision manufacturing requirements, long production cycle. Multi-station progressive die will be one of China's key development of the Automotive Mould products.

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