Definition of the part punched out by blanking
Blanking and punching is a commonly used separation process in the field of metal processing and mechanical manufacturing. Blanking refers to separating the required material from the plate-like parent material through a press or other equipment to form the required parts or shapes. Punching is to use a die to form holes in the plate. These two processes are widely used in industrial production, especially in the fields of automobile manufacturing, home appliance production, and mechanical equipment manufacturing. The blanking and punching process not only ensures the quality and precision of the workpiece, but also improves production efficiency and reduces material waste.
In the blanking and punching process, the part punched out is not the workpiece itself, but the waste part that is punched out. This is because in the process of sheet metal blanking, in order to ensure the precision and quality of the workpiece, the excess material needs to be punched out. These waste parts usually include laps, feed laps, and edge laps, which play a role in auxiliary positioning and support during the blanking process, but will eventually be punched out and separated.
Shape and size of the part punched out by blanking
The shape and size of the waste part punched out by blanking depends on the design of the blanking die (dies). The shape of the die determines the outline of the waste part, while the size of the die determines the size of the waste part. In actual production, in order to ensure the accuracy and quality of the workpiece, the size of the die is usually slightly larger than the workpiece size, and this part of the extra material is the waste. The shape and size of the waste vary depending on the workpiece and the die, but in general, it is the excess material that is flushed out during the punching process.
The role of the part punched out by the blanking in the process
The waste part punched out by the blanking mainly plays the role of auxiliary positioning and support in the process. In the punching process, in order to ensure the accuracy and quality of the workpiece, the excess material needs to be flushed out. These waste parts play the role of positioning the workpiece and supporting the die during the punching process through the design of the die, thereby ensuring the accuracy and stability of the punching. At the same time, the separation of waste also helps to improve production efficiency and reduce unnecessary waste.
Material properties and utilization of the parts punched out of blanking
The material properties of the waste parts punched out of blanking are the same as those of the original sheet, but due to the deformation and fracture experienced during the blanking process, their mechanical properties and surface quality may be affected. However, these waste parts still have certain utilization value. For example, they can be recycled and reused to make other products; or after further processing, they can be used in other industrial fields. In actual production, the recycling and utilization of waste materials are of great significance for saving resources and protecting the environment.
Common problems and solutions in blanking and punching process
In the blanking and punching process, some common problems may be encountered, such as burrs, bulges around the hole mouth, copper foil flipping, delamination and whitening, hole wall tilt or deviation, rough cross section, etc. The occurrence of these problems is usually related to factors such as die design, material properties, and processing parameters. In order to solve these problems, a series of measures can be taken, such as reasonably selecting the die gap, ensuring the sharp edge, adjusting the processing parameters, and optimizing the die design. In addition, strengthening material inspection, improving the rigidity and precision of the die, and ensuring the concentricity of the die are also effective solutions. Through the implementation of these measures, the quality and efficiency of the blanking and punching process can be significantly improved.
Of course, the above content is only for non-professionals to understand. In the actual sheet metal manufacturing process, there may be differences in the names of processing techniques in different countries and regions, but the corresponding functions are basically the same. You still need to make a detailed comparison yourself to prevent misunderstandings. In addition, if you are looking for a sheet metal service provider to do sheet metal processing, you can also directly ask the service provider for a detailed description of this process. Generally speaking, the service provider will be happy to explain.
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