Patent ID: 8534105
Filing Date: 2013-09-17
Classification: B21D

Abstract:
1. A bending machine having a punch and a die for bending a sheet-shaped work, a ram rendered vertically movable for vertically moving any of the punch and the die, and pressurizing module which pressurizes the work in a space between the punch and the die by vertically moving the ram, comprising: an inputting module which inputs die information on the punch and the die, material information on a work, and bending information; a database storing data on a pressure per unit length required for bending the work; a first calculating module which calculates a total pressure necessary for the pressurizing module based on various information inputted from the inputting module and on the data on the pressure stored in the database; a second calculating module which calculates a pressure necessary for the left and right pressurizing module based on the total pressure calculated by the first calculating module and on layout position information on the work relative to the bending machine; and a controlling module which controls the left and right pressurizing module based on the result of calculation by the second calculating module.