At present, the simple stamping dies mainly include rubber stamping die, polyurethane rubber stamping die, steel stamping die, sheet stamping die, low melting point alloy stamping die, zinc alloy stamping die and combined stamping die.
The research and development of these simple dies have important practical value in cold stamping production. This is because, compared with the conventional stamping die, the simple stamping die has faster production time and lower manufacturing cost, which provides a more economical and effective way for the trial production of some new products and the production of stamping parts with little batch requirements. Therefore, strengthening the research and development of simple stamping die will effectively promote the upgrading and production development of industrial products, which is of great practical significance to further improve economic benefits and improve the existing industrial production technology level.
Stamping-at room temperature, the required parts are obtained by applying pressure to the material by using the die installed on the press to separate or plastically deform it.
Stamping die-in the cold stamping process, materials (metal or nonmetal) are processed into parts (or semi-finished products), which is called cold stamping die (commonly known as cold stamping die).
In the production of stamping parts, reasonable stamping technology, advanced die and efficient stamping equipment are three essential elements.
Characteristics of stamping: Due to the above outstanding advantages, cold stamping has been widely used in mass production and occupies a very important position in modern industrial production. It is an essential processing method in national defense industry and civil industrial production.
1. High stamping productivity and high material utilization rate;
2. The produced parts have high precision, complexity and consistency;
Stamping processing must have a corresponding die, which is a technology-intensive product, and its manufacture belongs to single piece and small batch production, which has the characteristics of great processing difficulty, high precision, high technical requirements and high production cost (about 10% ~ 30% of the product cost). Therefore, only mass production of stamping parts can fully reflect the advantages of stamping process and obtain good economic benefits.
Because the shape, size and precision of the parts are different, the stamping process is also different. According to the deformation characteristics of materials, the cold stamping process can be divided into two types: separation process and forming process.
Separation process-refers to the separation of the blank after the stress of the deformed part reaches the strength limit σb under the impact force. The separation process mainly includes cutting and stamping.
Forming process-refers to the processing process that under the impact force, the stress of deformed parts reaches the yield limit σs but not the strength limit σb, so that the blank is plastically deformed and becomes a part with a certain shape, size and accuracy. The forming process mainly includes bending, stretching, flanging and spinning. Detailed classification and characteristics of stamping process
Stamping die is an essential process equipment for stamping production and a technology-intensive product. The quality, production efficiency and production cost of stamping parts are directly related to the design and manufacture of dies. The technical level of mold design and manufacturing is one of the important symbols to measure the manufacturing level of a country's products, which largely determines the quality, benefit and development ability of new products.
There are many forms of stamping dies, which can generally be classified according to the following main characteristics:
1. Classification according to process attributes
(1) Stamping die A die that separates materials along a closed or open contour. Such as blanking die, punching die, cutting die, cutting die, trimming die, cutting die, etc.
(2) Bending the die makes the blank or other blanks bend and deform along a straight line (bending line), thus obtaining a die with a certain angle and shape.
(3) Drawing die is a die that makes the blank of sheet metal into an open hollow part or further changes the shape and size of the hollow part.
(4) The forming die is a die for directly copying and forming a blank or semi-finished workpiece according to the shapes of the male die and the female die, and the material itself only produces local plastic deformation. Such as expanding die, necking die, flaring die, wavy forming die, flanging die, shaping die, etc.
Shandong Liaocheng Huo Xing stamping parts manufacturing Co., Ltd.
Liaocheng Spark Stamping Parts Manufacturing Co., Ltd. mainly produces various series of stamping parts, stamping parts, flat mats, flanges, wafers, blind plates, mechanical parts, elevator parts, fire extinguisher bottles, bicycle parts and so on. And can undertake all kinds of stamping parts and stamping parts, and can be customized according to customer requirements. Liaocheng Stamping Parts Factory has excellent processing equipment and perfect testing instruments.