Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1003/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :19/03/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : A METHOD OF CONTROLLING A COOLING DEVICE FOR A MACHINE TOOL
(51) International classification :F02D
(31) Priority Document No :11 52424
(32) Priority Date :23/03/2011
(33) Name of priority country :France
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
(71)Name of Applicant :
1)MESSIER-BUGATTI-DOWTY
Address of Applicant :Inovel Parc Sud 78140 Velizy
Villacoublay France
(72)Name of Inventor :
1)CLAUSMANN Denis
2)AUGELMANN Laurent
3)KEHREN Claude
4)JOUBERT Christophe
(57) Abstract :
A method of controlling a cooling device (1) for cooling a cutting tool (2) in a machine tool (3). The method comprising the steps
of: controlling the motor (M) to drive the pump (5) in such a manner that the pump (5) feeds the nozzle (6) with machining fluid
at a constant flow rate (D1) that is equal to a first flow rate setpoint; measuring a parameter (P) representative of a fluid outlet
pressure from the nozzle (6); and comparing an estimated outlet pressure (Pestim) as estimated from the parameter (P) with a first
predetermined pressure threshold (Ps1) and controlling the motor (M) so as to increase the fluid flow rate (D1) as delivered by the
pump (5) if the estimated output pressure drops below the first pressure threshold (Ps1).
No. of Pages : 26 No. of Claims : 10
The Patent Office Journal 21/06/2013 13703