Abstract: A reverse parametric engineering method for the design of tools is characterized by the following steps: importing an existing model [the design of the tool for the existing piece], production of a template for the existing tool, separation of the tool from the piece, cataloguing [saving in the form of a numerical database structured in the form of a catalogue], generating the existing tool using the section lines and characteristic lines, removing the original piece, parameterisation of the template of the existing tool [creating a parameter profile on the section lines and the characteristic lines], importing the new piece, matching the parameter template to the new piece and creating the new model, in other words the new tool for the new piece.

Abstract: The invention concerns a method for digital simulation of a die-stamping process comprising the following steps: recording at least one metamodel consisting of a permanent collection of the digital representations of elementary components of die-stamping tools, each of the elementary components being defined in the form of finished elements, and comprising digital static attributes; recording a digital model for deforming a blank used in the process to be simulated; selecting a subassembly of the permanent collection, by temporarily recording the elementary components representing a particular die-stamping tool corresponding to the simulation concerned, the subassembly constituting a specific collection in the form of digitized finished elements of the specific collection, parameterizing said digitized finished elements of the specific collection, and the corresponding attributes based on the characteristics of the process to be simulated; recording the digital data representing the relative movements of the