Definition Stamping is a production technology that uses a mold installed on a press to apply a deformation force to the sheet placed in the mold, so that the sheet is deformed in the mold, thereby obtaining product parts of a certain shape, size and performance.
Because stamping is often carried out at room temperature, it is also called cold stamping. Stamping is one of the metal pressure processing methods. It is a material forming engineering technology based on the theory of metal plastic deformation. The raw materials for stamping are generally sheet or strip, so it is also called sheet stamping. Stamping process refers to the specific method of stamping processing (the sum of various stamping processes) and technical experience; stamping die refers to a special tool for processing sheet metal into stamping parts.
Sheet metal, die and stamping equipment are the three essential elements that constitute stamping processing.
Characteristics and application of stamping processing
Stamping production relies on dies and presses to complete the processing process. Compared with other processing methods, it has the following characteristics in terms of technology and economy:
- The dimensional accuracy of stamping parts is guaranteed by the dies and has exactly the same characteristics, so the quality is stable and mutual. Good exchangeability.
- Due to the use of mold processing, it is possible to obtain parts with thin walls, light weight, good rigidity, high surface quality and complex shapes that cannot or are difficult to manufacture by other processing methods.
- Stamping generally does not need to heat the blank, and does not cut a lot of metal like cutting, so it not only saves energy, but also saves metal
- For ordinary presses, dozens of pieces can be produced per minute, while high-speed presses can produce hundreds of thousands of pieces per minute. So it is a highly efficient processing method.
Because the stamping process has the above-mentioned outstanding characteristics, it is widely used in various fields of the national economy. For example, industries such as aerospace, machinery, electronic information, transportation, weapons, household appliances and light industry all have stamping processing. Not only is it widely used in the industry, but everyone is in direct contact with stamping products every day. Stamping can manufacture small precision parts in clocks and instruments, as well as large covers for automobiles and tractors. Stamping materials can use ferrous metals, non-ferrous metals and some non-metallic materials.
Disadvantages Stamping also has some shortcomings, mainly in the noise and vibration during stamping processing. These problems are not entirely caused by the stamping process and the die itself, but are mainly caused by the backwardness of traditional stamping equipment. With the advancement of science and technology, these two kinds of pollution will definitely be solved.
What are the main applications of stamping processing?
Metal stamping parts are widely used in various fields of our life, including some electronic devices, auto parts, decorative materials and so on. Metal stamping parts are parts that can be processed by means of stamping, bending, stretching, etc. A general definition is – parts with constant thickness during processing. It is beneficial to improve the utilization rate of metal materials, reduce the variety and specifications of materials, and reduce the consumption of materials as much as possible. Use low-cost materials where possible, and make parts as scrap-free and blank as possible.
Matters needing attention when processing metal stamping parts:
1. Reform the process, mold and operation method, and realize the manual operation outside the mold.
For mass production operations, mechanization and automation can be achieved by reforming processes and molds. For example, the use of automation, multi-station stamping machinery and equipment, the use of multi-tool cutting tools and mechanized production equipment, the use of continuous molds, composite molds and other combined process measures. All of these not only ensure the safety of stamping operations, but also greatly improve production efficiency.
2. Transform stamping equipment to improve production safety and reliability.
At present, there are many unsafe factors in the operating system and electrical control system of many old hardware stamping equipment. If they continue to be used, they should be technically transformed. Stamping equipment manufacturers should improve product design to ensure the safety and reliability of stamping equipment.
3. Install protective devices.
Due to the small production batch, safety protection devices must be installed in stamping operations that cannot be automated and cannot use safe stamping tools to prevent injury accidents caused by operational errors. All kinds of protective devices have their own different characteristics and scope of use. Improper use will still cause injury accidents. Therefore, it is necessary to clarify the role of various protective devices in order to use them correctly and ensure safe operation.