Patent ID: 8890641

Claim:
Method for controlling the magnetic clamping of a part ( 31 ) in a magnetic clamping device ( 2 ) of an industrial installation ( 1 ) comprising, a unit ( 23 ) for controlling the magnetic clamping, a clamping plate ( 21 ) whereon is positioned the part to be clamped ( 31 ), several magnetic studs ( 5 ) housed in this plate ( 21 ), with the studs being connected to magnetic flux measuring circuits ( 51 a , 51 b , 51 c , 51 d ) defining measuring zones (A, B, C, D) and to power circuits making it possible to magnetise or demagnetise the studs ( 5 ), characterised in that the method comprises prior steps consisting in: a) determining ( 100 ) at least two treatment zones (Za, Zb, Zc, Zd) each defined by at least one measuring zone (A, B, C, D) b) defining ( 102 ) a surface (S) of the clamping plate ( 21 ) in contact with the part to be clamped ( 31 ) and in that the method comprises for each treatment zone (Za, Zb, Zc, Zd), steps consisting in: c) identifying ( 103 ) one or more magnetic studs ( 5 a , 5 b , 5 c , 5 d ) included in the surface (S) of the clamping plate ( 21 ) in contact with the part to be clamped ( 31 ), d) measuring ( 105 ) the magnetic flux produced by the stud or studs ( 5 a , 5 b , 5 c , 5 d ) identified in step c) e) calculating ( 106 ) an actual magnetic clamping force (Ea, Eb, Ec, Ed) based on the measurement of the step d), on the definition of the surface (S) in contact carried out in the step b) and on the identification of the studs ( 5 a , 5 b , 5 c , 5 d ) carried out in the step c), f) calculating ( 108 ) a theoretical magnetic force (E′a, E′b, E′c, E′d) thanks to the definition of the surface (S) in contact carried out in the step b) and the identification of the studs ( 5 a , 5 b , 5 c , 5 d ) carried out in the step c).