The correlation between the rebound of sheet metal parts and bending machine tooling

The correlation between the rebound of sheet metal parts and bending machine tooling

Metals have certain physical properties, and different types of metals differ greatly in their hardness, strength and even melting point and density. Therefore, when using bending machine tooling to process sheet metal parts, it is necessary to set its bending radius and angle according to the metal material. If the setting is not good, there will be a rebound, that is, the bending radius is less than expected, and the precision of the machine part cannot reach the requirement.

What is the relationship between the springback of sheet metal parts and the die type?

The reason for the springback of sheet metal parts is largely because the bending radius is set too large and the metal bends to produce breakage, but because the radius is large, it is not yet to the extent of breakage, and it has its own shape memory function, like a certain type of alloy, which not only requires a larger impulse when bending, but also is prone to springback. In this case, the bending radius will be set slightly smaller can be prevented from rebound. Shape memory alloy has another characteristic, that is, how to bend again, as long as the internal metal chain is not broken, a heating back, so in the processing of such materials as far as possible to control the low temperature, bending processing, cooling process to follow up.

What is the role of bending machine tooling in the process?

The upper and lower dies of the bending machine are like the upper and lower teeth that will bite together, and they approach each other and the sheet metal parts are bent into the shape people want. The bending radius of the part is controlled by the die, so when the bending radius is determined, the type of die is basically determined. There are three types of bending dies to choose from when processing in the bending machine, there are rounded corners, there are right angles, there are single bends, and there are also continuous multi-bends. When calculating the radius, all the bends should be considered, so that the parts can try to avoid rebounding or even using this phenomenon.