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The bending parameters of sheet metal bending machine
Sheet metal bending is an integral part of many fabrication processes, and the selection of the correct machine and parameters are critical when it comes to achieving the desired result. When selecting a sheet metal bending machine, you must consider the material being bent and the size of the end product. Additionally, the machine must be able to handle the load of the sheet, which is calculated by taking into account the thickness and weight of the sheet material.
Bending parameters refer to the settings and measurements necessary for bending sheet metal. The main parameters are the throat depth, depth of penetration, and the angle of bend. Throat depth determines how deep the curved shape is, and penetration depth is the distance from the surface of the work piece to the center of the bend. Angle of bend is the angle at which the sheet is bent relative to the work pieces surface.
The most common configuration of a sheet metal bending machine is the C-frame type. It consists of two very heavy steel plates between which the sheet metal is clamped. A beam is placed between the two frames that is hinged to the rear frame and can be adjusted for the desired angle of bend. Traditional C-frame machines are manually operated, and can bend sheets with thicknesses from 0.5 to 10mm.
Many C-frame bending machines are now motorized and can be programmed to produce multiple bends with complex geometries. The motorized version has adjustable bending speed, which can be programmed to bend sheets with different thicknesses and configurations with accurate results. However, this type of machine is much more expensive than a manual version.
CNC press brakes are becoming increasingly popular for small series production of sheet metal parts. This type of machine is computer-controlled, and is capable of performing a variety of bends in one cycle. The machine can accurately adjust the bending parameters, such as throat depth, penetration depth, and angle of bend, as well as the pressure and speed of the press.
These machines are used primarily in the automotive and aircraft industries, due to their high level of accuracy, repeatability, and production speed. They can be used to manipulate heavy gauge steel up to 3m in length and 0.5m in width, and as such they are also suitable for large-scale production applications.
In addition to C-frame and CNC press brake machines, there are three other types of machines used for bending sheet metal: arc machines, induction machines, and hydro-forming machines.
Arc machines use electric current to heat and bend the metal. This process is typically used for large-scale bending applications, and can handle heavier gauge metal than other types of machines.
Induction machines use electric current to induce an electrical vibration in the sheet metal, causing the metal to bend. This process is also used for larger fabrication jobs, as it is more accurate and more efficient.
Finally, hydro-forming machines use a liquid-filled chamber to bend metal in a variety of shapes. This process allows for extremely accurate bends and is known for its speed and efficiency.
Overall, when selecting the appropriate sheet metal bending machine and parameters, it is important to consider the sheet metal being bent and the specific needs of your application. Machines can be adjusted and programmed to produce complex shapes and bend different thicknesses of sheet metal accurately. Choosing the correct machine and parameters can help you achieve your desired product with speed and precision.
