A method for optimizing the assembly of bending tools (9, 10) of a bending machine, which bending tools (9, 10) are formed by a plurality of serially successive bending punches and by a plurality of serially successive bending dies functionally cooperating with the bending punches, whereby at least one bending tool line of bending punches and at least one bending tool line of bending dies is formed, wherein the bending tools (9, 10) can be optionally positioned regarding the longitudinal direction of a first and second tool holder (12, 15) of the bending machine and can be fixed at the selected positions, the method comprising the steps of: - entering data of at least one bending model, which is a basis for a workpiece to be produced, or of multiple bending orders of a bending order stack to be carried out sequentially, into a computing unit; - determining or suggesting, by the computing unit and/or an operator, a selected set of bending tools (9, 10) from an available inventory of bending tools (9, 10), with which selected set of bending tools (9, 10) at least one of the bending models can be at least partially realized or at least individual ones of the bending orders of the bending order stack can be carried out, characterized by - determining a change frequency number by means of the computing unit for at least individual ones of the bending tools (9, 10) from the selected set of bending tools (9, 10) regarding at least one of the bending models to be realized or regarding the at least one bending order stack to be processed; by - determining or suggesting, by the computing unit, positions of the individual bending tools (9, 10) of the selected or required set of bending tools (9, 10) relative to their tool holders (12, 15), taking into account the respective change frequency numbers of the bending tools (9, 10); and by - positioning the bending tools (9, 10) in the bending machine taking into account the change frequency numbers of the bending tools (9, 10). wherein the bending tools (9, 10) can be optionally positioned regarding the longitudinal direction of a first and second tool holder (12, 15) of the bending machine and can be fixed at the selected positions, the method comprising the steps of: - entering data of at least one bending model, which is a basis for a workpiece to be produced, or of multiple bending orders of a bending order stack to be carried out sequentially, into a computing unit; - determining or suggesting, by the computing unit and/or an operator, a selected set of bending tools (9, 10) from an available inventory of bending tools (9, 10), with which selected set of bending tools (9, 10) at least one of the bending models can be at least partially realized or at least individual ones of the bending orders of the bending order stack can be carried out, characterized by - determining a change frequency number by means of the computing unit for at least individual ones of the bending tools (9, 10) from the selected set of bending tools (9, 10) regarding at least one of the bending models to be realized or regarding the at least one bending order stack to be processed; by - determining or suggesting, by the computing unit, positions of the individual bending tools (9, 10) of the selected or required set of bending tools (9, 10) relative to their tool holders (12, 15), taking into account the respective change frequency numbers of the bending tools (9, 10); and by - positioning the bending tools (9, 10) in the bending machine taking into account the change frequency numbers of the bending tools (9, 10). - entering data of at least one bending model, which is a basis for a workpiece to be produced, or of multiple bending orders of a bending order stack to be carried out sequentially, into a computing unit; - determining or suggesting, by the computing unit and/or an operator, a selected set of bending tools (9, 10) from an available inventory of bending tools (9, 10), with which selected set of bending tools (9, 10) at least one of the bending models can be at least partially realized or at least individual ones of the bending orders of the bending order stack can be carried out, characterized by - determining a change frequency number by means of the computing unit for at least individual ones of the bending tools (9, 10) from the selected set of bending tools (9, 10) regarding at least one of the bending models to be realized or regarding the at least one bending order stack to be processed; by - determining or suggesting, by the computing unit, positions of the individual bending tools (9, 10) of the selected or required set of bending tools (9, 10) relative to their tool holders (12, 15), taking into account the respective change frequency numbers of the bending tools (9, 10); and by - positioning the bending tools (9, 10) in the bending machine taking into account the change frequency numbers of the bending tools (9, 10).