Sheet metal bending is a metal plate processing technology formed by pressure processing of sheet metal materials during the manufacturing process according to design requirements. Mechanical equipment is used to pressure bend the sheet metal to achieve the final processing requirements. Sheet metal bending is generally processed using a professional bending machine.

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Sheet metal bending can produce sheet metal products of various shapes, lengths, sizes, and shapes. This process can transform single or multiple sheet metal sheets into parts with different geometric shapes, high precision, and high strength that meet specific requirements.

Sheet Metal Bending Manufacturing

Before bending sheet metal, the corresponding angle, pressure, and line speed must be set on the machine to ensure the processing quality.

Usually, the sheet metal to be bent must be cut into the appropriate size and shape before it is placed in the clamp of the bending machine. Next, the clamp will make the sheet metal thoroughly contact the upper and lower dies of the bending machine, and then it will be processed by the machine. After processing, the processed parts are clamped out for the next assembly or processing.

Types of Sheet Metal Bending Processes

1. Partial bending uses an upper die below 88 degrees and a lower die with V=12t (V represents the groove width, and t represents the material thickness) to perform right-angle and obtuse-angle bending.
2. Close bending is a method of bending at right and obtuse angles using a 90-degree angle. The lower die for close bending uses V=6~12t.
3. The embossing bending is performed at 90 degrees; the upper die is used for right-angle bending. (It is a standard right-angle bending) The lower die of the embossing bending is selected to be V=5~6t.

Principles of Bending Process Sequence

• Bend from inside to outside.
• Bend from small to large.
• Bend unique shapes first, then general shapes.
• The previous process does not affect or interfere with the subsequent process after forming.

What is a Bending Mold?

Let’s start with the basics. A bending mold, or press brake die, is a specialized tool installed on a press brake machine to shape sheet metal. The process is a simple concept:

1. The Punch: The upper tool, attached to the moving ram of the press brake.
2. The Die: The lower, stationary tool over which the metal is placed.

The machine forces the punch down into the metal, pressing it into the die’s cavity. This action creates a precise bend at a predetermined angle. The shape and size of the punch and die directly determine the final shape of the metal part.