1.Springback of bending workpiece
There are many factors that affect the springback of a bent part, including the mechanical properties of the material, wall thickness, bending radius, and normal pressure during bending. In addition, the greater the ratio between the fillet sheet metal and the plate thickness of the bent sheet metal workpiece, the greater the springback. The springback of the bent parts is currently avoided as long as the manufacturer takes certain measures when designing the mold. At the same time, some structures have been improved in design, and the springback angle has been increased. For example, stiffeners are pressed into the bending area, which not only improves the rigidity of sheet metal processing parts, but also helps to inhibit springback.
2. Selection of bending knife
The sheet metal processing parts are mainly selected according to the shape of the sheet metal processing parts during the bending process. The shape of the bending tools of the general processing factory is more shape, especially for manufacturers with a high degree of specialization, to process various complex bending. There are also many factors that affect the accuracy of the bending knife, mainly including the arc radius of the upper die, material, material thickness, strength of the lower die, and die size of the lower die. In order to meet the needs of the product, it is necessary to ensure the safety of the bending machine. Under the circumstances, the manufacturer has serialized the bending knife mold.
3. The principle of bending processing sequence
The principle of bending processing sequence should be bending from small to large; bending from inside to outside models; bending a relatively special shape first, and then bending a general shape; after the previous process is formed, it has no effect on the subsequent process or interference.