Deflection compensation of bending machine table.

1. Hydraulic cylinder compensation method

The hydraulic automatic deflection compensation mechanism of the workbench is composed of a set of oil cylinders installed in the lower workbench. The position and size of each compensation cylinder are designed according to the deflection compensation curve of the slide block and the finite element analysis of the workbench. The hydraulic compensation is achieved through the relative displacement between the front, middle, and back three vertical plates to achieve the neutral version of the bulge compensation. The principle is to realize the bulge through the elastic deformation of the steel plate itself, so the compensation amount can be adjusted within the elastic range of the workbench.

2. Mechanical compensation method

The mechanical compensation is to add a convex wedge in the machine work surface, which is composed of a group of convex wedges with beveled surfaces. It can be divided into manual compensation and automatic compensation, customers choose more manual compensation on the Da41 machine, and the electro-hydraulic synchronous bending machine uses automatic compensation. The mechanical compensation is calculated by the CNC system according to the size of the load force when the workpiece is bending, and the relative movement of the convex wedge is automatically controlled, so that the gap between the upper and lower molds is consistent when bending, and the Angle of the bending workpiece is consistent in the length direction.