Bending

Several types of bending in sheet metal

There are quite a few different methods for the sheet metal bending process. Each method has its advantages. Simple methods are more flexible, and most importantly, require fewer different tools to finish the process.

1. V-shape bending

V-shape bending is the most common bending method by using punches and dies. V shape bending including hit bottom, air bending, and coining. Air bending and hit bottom methods are approximately 90% in all V-shaped bending works.

2. U-shape bending

In principle, U shape bending is very similar to V-shape bending. There is a die and a punch, which are both U-shaped and then create a similar bending. It is a very simple bending method for  U-channels steel, but is not common because this method is always instead of other more flexible methods.

3. Roll bending

Roll bending is a method used to bend sheet metal into a rolled or curved shape. Roll bending uses a hydraulic press, a bending machine, and three sets of rollers to finish the different bending or large round bending. Roll bending can manufacture tubes or different shapes of cones

4. Wipe bending

Wipe bending is another method of bending sheet metal edges. It is important to ensure that the sheet metal is pushed onto the wiper die correctly. Therefore, wiping mold also determines the inner radius of the bending part. The amount of slack between the wipe die and punch plays a significant role in getting good results.

5. Rotational bending

Another way to bend edges is rotational bending. It has a big advantage over wipe bending or V-shape bending, that is it will not scratch the surface of the parts. Rotary tube benders can also bend angles that are sharper than 90 degrees. This helps a lot for common angles because kickbacks can be avoided.

6. step bending

In the metal bending process, the step bending essentially is the repeating V-shape bending, also called bump bending. It uses many V-shaped bends in succession to obtain a large radius for the part.