In sheet metal processing, V-shaped bending is widely used and has low cost;
U-shaped bending achieves small bending radius and high precision; multiple bending achieves complex shapes and has complex processes. The selection of bending method requires comprehensive consideration of design requirements, materials, batch and cost.
In the field of sheet metal processing, the bending process is a key process for plastically deforming flat sheet metal materials through the force of the mold to obtain parts with specific angles and shapes. The bending process is widely used in various industries, from simple brackets to complex chassis shells, which are inseparable from the application of bending technology.
V-shaped bending, the most widely used bending method
V-shaped bending principle:
V-shaped bending uses the V-shaped upper die (punch) and V-shaped lower die (die) on the bending machine. Through the downward movement of the upper die, the sheet metal material is forced to bend and deform in the V-shaped die, thereby obtaining the required angle (acute angle, right angle, obtuse angle) and shape of the bent parts. It is the most widely used bending method.
Features of V-shaped bending:
V-shaped bending has the advantages of wide application, simple equipment, convenient operation and low cost, but it also needs to consider the rebound effect of the material and compensate for it; it can achieve bending at various angles, which is suitable for the bending needs of most sheet metal parts, and the required equipment usually only requires one bending machine and a set of V-shaped molds, and the technical requirements for operators are not high.
Application scenarios of V-shaped bending:
V-shaped bending is widely used in chassis cabinets (such as computer, server cabinets, distribution cabinets, etc.), household appliances (such as refrigerators, washing machines, air conditioners, etc.), architectural decoration (such as metal doors and windows, curtain walls, ceilings) and automobile manufacturing (such as body covers, structural parts) and many other fields.
U-shaped bending, a process to achieve a smaller bending radius
Principle of U-shaped bending:
U-shaped bending is similar to V-shaped bending. Both are achieved by using the mold on the bending machine, but the upper mold (punch) and the lower mold (die) are U-shaped. Through this special shape of mold, U-shaped bending is usually used to achieve bending needs with a smaller bending radius.
U-shaped bending features:
U-shaped bending can achieve a smaller bending radius than V-shaped bending, and the contact area between the sheet metal material and the mold is larger, and the force is more uniform, which is conducive to improving the forming quality of the bent parts and reducing deformation and defects, but the corresponding requirements for the accuracy of the bending machine and the manufacturing accuracy of the mold are higher, and the mold cost is also higher.
U-shaped bending application scenarios:
U-shaped bending is mainly used in occasions with special requirements for bending radius, such as electronic products (such as mobile phones, tablets, internal metal brackets, connectors), medical devices (such as surgical instruments, medical equipment shells) and precision instruments (such as optical instruments, measuring instruments, Internal metal structural parts) and other fields.
Multiple bending, the realization of complex shapes
Multiple bending principle:
Multiple bending refers to multiple bending on the same sheet metal part. Different bending methods such as V-shaped bending and U-shaped bending can be combined. Through multiple bending operations, various complex geometric shapes can be achieved. It is the main way to obtain sheet metal parts with complex spatial shapes.
Features of multiple bending:
Multiple bending has extremely high design freedom, which can realize various complex sheet metal designs and meet diverse product needs, but the process is relatively complex and requires precise control of the angle, position and sequence of each bend. It usually requires the use of a multi-station bending machine or a bending machine equipped with a special mold, resulting in relatively low production efficiency.
Application scenarios of multiple bending:
Multiple bending is mainly used in the manufacture of sheet metal parts with complex shapes, such as aerospace (such as various complex metal components inside aircraft), automobile manufacturing (such as various special-shaped parts inside automobile bodies) and various customized products.
Comparison of V-shaped, U-shaped and multiple bending
V-shaped bending has become the most commonly used bending method with its wide applicability, low equipment and mold costs, and simple operation, and can achieve bending at various angles. In contrast, although the equipment and mold costs of U-shaped bending are higher and the process is relatively complex, it can achieve a smaller bending radius and is suitable for applications with special requirements for bending radius. Multiple bending is unique in achieving complex shapes. It allows extremely high design freedom, but the process is the most complicated and the production efficiency is relatively low. It usually requires more advanced equipment support.
Of course, in actual production, the choice of bending method depends on the comprehensive consideration of various factors such as the design requirements, material properties, production batch and cost of sheet metal parts. If you choose a service provider to customize the sheet metal bracket, then you don’t have to worry about this. The manufacturer will inform you of the process based on the actual product. In addition, if you want to find a standardized and reliable sheet metal manufacturer, you can choose to cooperate with Mulan Group. Mulan Group is a professional Chinese sheet metal manufacturer with 12 years of experience in sheet metal production and trade export. Choosing Mulan Group can give you strong business support.
Here is our Sheet metal bending parts Display：
