Research status and development trend of fine blanking technology

Innovation of fine blanking technology
Since the emergence of fine blanking technology, many practical and innovative fine blanking technologies have been invented to meet different manufacturing requirements. The traditional fine blanking method can only process thin plate parts. In order to solve the problem of fine blanking for thick plates, there have been several processing methods, such as fine blanking with opposite concave die, fine blanking by reciprocating forming, and fine blanking by extrusion. In order to avoid the influence of blank holder ring on parts, the fine blanking technology of plane strong pressing plate is developed. In order to reduce the burr height of fine blanking parts and form a smooth blanking surface, a negative clearance fine blanking method is developed.
With the development of manufacturing industry and the complexity of manufacturing requirements, the requirements of fine blanking production are becoming higher and higher. In order to process some special structural parts and meet more production requirements, innovative fine blanking method is one of the directions that should be studied in the future.
Practical finite element simulation technology
Because of the high price of fine blanking die and the long manufacturing cycle, it is very difficult to carry out the fine blanking experimental research. In order to study various process parameters and stress-strain situation in fine blanking, finite element simulation technology is widely used. However, the research of finite element simulation technology still stays on the analysis of parts and dies in the process of fine blanking, which is only helpful to the adjustment of process parameters and die design.
For the production process of fine blanking parts, it also needs to go through many subsequent processes such as deburring, heat treatment and surface treatment after the finish blanking process. Some of these processes have a great impact on the size and shape of fine blanking parts, and the size and shape of some parts after subsequent processing may not meet the relevant technical requirements of the drawing.
At present, there are few simulation studies on the whole part production cycle. It is one of the future research directions to design and develop the finite element simulation software which can calculate, simulate and control the whole production cycle of fine blanking parts, and integrate the modules of plastic deformation, heat treatment and surface treatment.
This paper introduces the research status of fine blanking technology from four aspects: fine blanking mechanism, fine blanking process, fine blanking equipment and die, and fine blanking industrialization production. According to the problems and difficulties faced by fine blanking technology, the current solutions are briefly described and analyzed. According to the technical characteristics of high production efficiency and low production cost of fine blanking industry, as well as the increasingly complex demand state of parts, the future development trend of fine blanking technology is prospected, and the importance of intelligent fine blanking production, innovation of fine blanking method and fine blanking finite element simulation technology are expounded.