Deflection compensation structure of bending machine

The invention discloses a bending machine deflection compensation structure which comprises a bending machine frame, a supporting base is fixedly arranged on the lower portion of the bending machine frame, deflection compensation assemblies are fixedly installed on the supporting base, a lower die holder is installed on the deflection compensation assemblies, and the multiple groups of deflection compensation assemblies are arranged side by side. The deflection compensation assembly comprises two sets of side baffles fixedly arranged on the upper portion of the supporting base, a compensation base is fixedly arranged between the two sets of side baffles, a lower inclined block is fixedly installed at the upper end of the compensation base, and an upper wedge block matched with the lower inclined block is arranged between the two sets of side baffles in a sliding mode. The compensation base is provided with a driving piece used for driving the upper wedge block to ascend and descend. The upper wedge block is u