Stamping is not unfamiliar in manufacturing, and stamping is often required to produce parts of various materials and shapes.
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Stamping processing is the production technology of product parts with certain shape, size and performance by means of the power of conventional or special stamping equipment, so that the sheet metal is directly subjected to deformation force in the mold and deformed, so as to obtain product parts of certain shape, size and performance. Stamping processing can be divided into precision stamping and Normal stamping.
Precision stamping is a material processing method developed on the basis of ordinary stamping technology. It is achieved by improving the guiding accuracy, reducing the gap between the convex and concave dies, increasing the reverse pressure and the V-ring blank holder. Under the condition of three-way compressive stress, the process of precision stamping or precision stamping and other forming processes is realized to obtain precision stamping parts.
Precision stamping requires high precision of stamping parts. In the process of processing and production, stamping coil material or forming must consider the technical support of suitable precision punching machines, molds, materials, lubricants, etc., and the requirements are relatively high.
Ordinary stamping does not have high requirements on the accuracy of stamping parts, but it also has its specific market demand. The thickness of the substrate is thick and does not require cutting, cutting, stretching and other processes. The stamping materials are plates, pipes, etc. When it is not big, ordinary stamping can meet the requirements.
In the production process of precision stamping parts, stamping coils or forming, it is necessary to consider the appropriate technical support of precision punches, molds, materials, lubricants, etc.
The other is to apply about 25% of the main blanking pressure on the end face of the product’s unfeeder, which is called back pressure. These three pressures do not interfere with each other, and the size of each pressure is synchronized with the forming, which must be suitable for the processing requirements of forming and blanking, and can be adjusted arbitrarily. In addition, the processing speed must also be adjusted according to the required conditions of the processing object of forming or blanking. The construction of the mold is not only required to be simple and light in weight, but also suitable for use.
When processing thick plates, for molds that are prone to deformation, there is no obvious deformation due to the use of center support. Even during blanking, when the workpiece is squeezed into the die, if the ejector retreats, the inside of the die is supported by the center support. If the hydraulic piston is connected to the side of the ring gear pressure plate, and the piston retreats, the inner side of the die ring gear pressure plate is still supported by the center bearing, so the rigidity will not be destroyed at any time.
The difference between precision stamping and ordinary stamping lies in the requirements for stamping equipment and the precision of stamping parts required. If the precision of stamping parts is required to be high and the number of stamping parts is large, precision stamping can be selected. On the contrary, if the precision of stamping parts is not too high, and the stamping parts are stamped from ordinary sheet materials, ordinary stamping machines can be selected, which needs to be based on their own requirements. Punch feature selection.
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