Press brake with crown adjustment and movable table adjustment calculate from first and second die contiguous position

摘要

An apparatus for controlling a press brake is advantageously employable for a press brake for which a high operational efficiency and a high working accuracy are required. In response to inputting of working conditions inclusive of a target bending angle for a plate, the apparatus calculates displacement of a load active on a stationary table and a movable table, automatically calculates a quantity of crowning to be adjusted based on results derived from the foregoing calculation and then calculates the present position assumed by the movable in additional consideration of the quantity of crowning to be adjusted, based on results derived from the aforementioned calculations. The press brake accurately bends the plate based on the thus derived quantity of crowing to be adjusted and the present position assumed by the movable table without an occurrence of malfunction of so-called intermediate opening of the bent plate.