Patent ID: 7324868

Claim:
A method for producing a die for a press brake which is formed by an upper die and a lower die, comprising the steps of: preparing three-dimensional CAD data for a product to be bent; preparing three-dimensional CAD data corresponding to shapes of the upper die and the lower die for the press brake based on the three-dimensional CAD data for the product, the upper die and lower die each having a respective surface for engaging and bending the product; dividing the upper die and lower die into plate-shaped die elements having a uniform thickness based on the three-dimensional CAD data for the die, wherein each die element comprises a portion of one of the respective surfaces; preparing a laser beam machining program for each divided die element; manufacturing each die element by subjecting a raw material to laser beam machining by using the machining program; producing the die by assembling the die elements, and further comprising the step of putting an element number on each die element by laser beam machining.