What special processes are used in the bending machine?

The bending machine can not only carry out conventional bending processing on plates, but also complete many special processing treatments on this basis, such as expansion after bending, groove pressing before bending, cutting holes or cutting lines along the bending line, and reprocessing to the design size after bending near the bending line, etc. When there is only one or several pixel holes whose distance to the bending line is less than the minimum hole pitch, and when the product appearance requirement is strict, in order to avoid the material when bending, the pixel can be treated with a reduced hole at this time, but when there are many engineering numbers, the efficiency is low. In actual design due to the needs of structural design, the actual distance is often smaller than the above distance, and the processing manufacturer often adopts groove pressing before bending. Since the CNC bending machine pressed, it is a little less efficient and the precision is low, and it should be avoided as much as possible in principle. When the bending line used by the bending has no effect on the appearance of the workpiece or can be accepted, the processability is improved by cutting holes, but the disadvantage of doing so is that the appearance effect is, and because the cutting line or cutting narrow groove generally needs to be cut by laser machine, which affects the appearance effect. When it is required to ensure the hole margin it is necessary to reprocess to the design size after bending near the bending line, but generally this secondary material removal can not be completed on the punch press, and can only cut twice on the laser cutting machine, which is troublesome to position, and the cost of this processing is very high.