Patent ID: 9008847
Filing Date: 2015-04-14
Classification: B23Q

Abstract:
1. A method of controlling a cooling device for cooling a cutting tool for a machine tool fitted with such a cutting tool, the cooling device comprising: a supply of machining fluid; a pump connected to the supply; a drive motor for driving the pump; a cooling nozzle for cooling the tool; and at least one machining fluid transfer duct connecting the pump to an input of the nozzle; the method comprising the steps of: controlling the motor to drive the pump in such a manner that the pump feeds the nozzle with machining fluid at a constant flow rate (D measuring a parameter (P) representative of a fluid outlet pressure from the nozzle; and comparing an estimated outlet pressure (P the method further including a step of: determining the first flow rate setpoint D from a database B that contains, for a plurality of given nozzle flow sections S, flow rate values P, Q for the cooling fluid necessary for generating a given theoretical level of fluid jet impact force F