System for controlling machining of a part

A control system used in the machining of a part by a machining machine, comprising:

• an acquisition module configured to acquire values of a set of input parameters relating to cutting conditions and properties of a material of said part, and
• a microprocessor configured to:
• determine at least one operational cutting parameter representative of a cutting signal from the machining machine by using a set of output parameters of an integrity model constructed previously in a learning phase, said integrity model linking said set of input parameters to said set of output parameters comprising specific cutting coefficients representative of a material integrity of the part, and
• establish at least one fatigue threshold of said at least one operational cutting parameter, said fatigue threshold allowing a progress of cutting operations to be controlled,
• wherein
• the acquisition module is configured to acquire, in the learning phase, values of input parameters comprising:
• macroscopic kinematic parameters comprising a cutting speed parameter, a tooth advance parameter, a parameter of axial engagement of a tool, and a parameter of radial engagement of the tool;
• parameters of a geometry of the tool comprising a rake angle and a helix angle;
• tribology parameters comprising a mean angle of friction;
• and
• parameters of the material comprising a specific heat capacity, a density and a Taylor-Quinney coefficient;
• and
• the microprocessor is configured to construct the integrity model by using physical analytical and/or empirical relationships linking said set of input parameters to said set of output parameters representative of the cutting forces.