In recent years, with the rapid development of computer software and hardware, the imitation skill (CAE) of stamping process plays an increasingly important role. In the United States, Japan, Germany and other developed countries, CAE technology has become a necessary link in the process of die planning and manufacturing, which is widely used to guess forming defects, optimize stamping skills and die structure, advance the reliability of die planning, and reduce the time of die testing.

The role of CAE in stamping process is becoming more and more prominent

In recent years, with the rapid development of computer software and hardware, the imitation skill (CAE) of stamping process plays an increasingly important role. In the United States, Japan, Germany and other developed countries, CAE technology has become a necessary link in the process of die planning and manufacturing, which is widely used to guess forming defects, optimize stamping skills and die structure, advance the reliability of die planning, and reduce the time of die testing.

Many domestic car mold companies have made significant progress in CAE application and achieved outstanding role. The application of CAE technology can greatly save the cost of the die test and shorten the development cycle of the stamping die, which has become the primary method to ensure the quality of the die. CAE skills are gradually transforming mold planning from experience planning to scientific planning.

The position of 3D die planning is stable

The 3D planning of die is the first content of digital die skills, and the foundation of the integration of mold planning, production and inspection. Toyota, general motors and other companies have completed the 3D planning of the mold, and achieved outstanding application role. Some foreign practices in 3D die planning are worth learning. Besides the integration of die 3D planning, another advantage is that it is easy to do and inspect, and it can be used for movement drying and analysis, and it deals with a difficult problem in 2D planning.

Digital die skills have become the main flow direction

The digital die skills developed rapidly in recent years are the effective way to deal with many questions in the development of car mould. The so-called digital mold skills, namely, the computer skills or computer assisted skills (CAX) in the process of mold planning and production.

The successful experience of computer assisted skills in domestic and foreign car mold companies is summarized. The digital car mold skills mainly include the following aspects:

â‘  DFM is to think and analyze the manufacturability in planning to ensure the success of skills.

â‘¡ Assist skills of mold surface planning, and develop intelligent shape planning skills.

â‘¢ CAE assisted in analyzing and simulating the process of stamping skills, guessing and handling the shortcomings and forming questions that may appear.

â‘£ The traditional two-dimensional planning is replaced by three-dimensional die construction planning.

⑤ CAPP, cam and cat skills are selected in the process of mold making.

â‘¥ The problems in the process of processing die test and stamping production are dealt with under the guidance of digital skills.

Rapid development of mold processing initiative

Leading processing skills and equipment are the primary root of advancing productivity and ensuring commodity quality. Among the leading car mould companies, it is not uncommon to have CNC machine tools with double worktables, ATC, photoelectric control system for active processing and online measurement system of workpieces. The NC machining has been carried out from simple profile processing to all the processing of profile and construction surface, from medium and low speed processing to high-speed processing, and the processing initiative skills are very quick.

Stamping skills of high strength steel plate are the direction of future development

High strength steel has excellent properties in the aspect of yield strength ratio, strain hardening, strain distribution and bump energy absorption, and the application amount in car is constantly added. Now, the high strength steel used in the stamping parts of car mainly includes BH steel, DP steel, TRIP steel and so on. 97% of the world ultra light vehicle (ulsab-avc) is high-strength steel, and the proportion of leading high-strength steel plate in the vehicle materials will exceed 60%, while the share of duplex steel will account for 74% of the vehicle steel plate. Nowadays, many of the soft steel series mainly used if steel will be replaced by high-strength steel plate series, and high-strength low alloy steel will be replaced by duplex steel and ultra-high strength steel plate. Nowadays, the application of high strength steel plate for domestic car parts is still limited to structural parts and beam parts. The tensile strength of the data is more than 500MPa. Therefore, it is a primary question that the Chinese car die profession should be able to grasp the stamping skills of high-strength steel plates quickly.

New mould commodities are on the go

With the development of high efficiency and initiative in car stamping production, progressive die will be used more and more widely in the production of car stamping parts. The progressive die is used to form the disordered shape stamping parts, especially the small and medium-sized ones which are made in sequence according to the traditional skills.

Progressive die is a kind of high-tech mold commodity, which is difficult to produce, high precision request and long production cycle. Multi station progressive die will be one of the key mold commodities in China.

Mold data and appearance processing skills will be reused

The quality and function of die data are the primary factors that affect the quality, life and cost of the die. In recent years, in addition to a variety of high resistance and high wear resistance cold working die steel, flame quenching cold working die steel, powder metallurgy cold working die steel, the selection of cast iron materials in large and medium-sized stamping die abroad is a worthy of attention. Ductile iron has excellent strong resistance and wear resistance, and its welding function, processability and external quenching function are better, and the money is lower than alloy cast iron, so it is widely used in car stamping die.

The scientific and information management is the direction of mold company

Another primary aspect of the development of car mold skills is the scientific and information-based management. The scientific management makes the mold company continue to develop the direction of just in time manufacturing and lean production. The company has been more accurate in handling, the production power has been greatly advanced, and the ineffective organization, links and personnel are constantly streamlined.

With the development of modern management skills, many leading information-based processing tools, including ERP, CRM, SCM and PM, are widely used in mold companies.

Fine manufacturing of die is an inevitable trend

The so-called fine manufacturing of die is for the development process and production results of the mold, which is shown in detail as follows: rationalization of stamping skills and die structure planning, high precision of mold processing, high reliability of mold commodities and close handling of skills. The fine manufacturing of mould is not a single skill, but a summary of planning, processing and handling skills. The completion of fine mold production depends on the skill of carving, but also by close handling to ensure.