Patent ID: 7311030

Claim:
A method of optimizing setting parameters for a braiding machine fitted with spindles, themselves provided with reels of braiding wires constituted by strands of a particular material for braiding a shielding sheath of determined diameter on bundles of electrical conductors, said setting parameters comprising a plurality of groups of spindles, and a plurality of groups of braiding wires, wherein: A/ in a first step I, for each diameter of electrical conductor bundle, a first set (E 1 ) of spindle groups and of braiding wire groups is determined for which a range (P) of braiding angles is defined specifically for each wire, each range (P) firstly being defined by minimum and maximum braiding angles (AMI, AMA) lying in a predetermined range of braiding angles (PDT), and secondly corresponding to a predetermined maximum value (Ro) for the DC linear electrical resistance and to a predetermined minimum value for the optical coverage percentage (Kc); B/ in a second step II, for each diameter of electrical cable bundle and for each spindle group associated with each of the braiding wire groups in said first set (E 1 ), it is verified that the corresponding transfer impedance, for each braiding angle lying in said range (P), lies below a characteristic curve (G) representing the variation in an upper limit for transfer impedance as a function of the frequency of conducted type electromagnetic radiation, and a second set (E 2 ) of spindle groups and of braiding wire groups is selected from said first set (E 1 ), so that an optimum braiding angle (AOP) corresponds to a minimum weight for the shielding sheath; and C/ in a third step III, for each diameter of electrical conductor bundle, a single spindle group and a single braiding wire group is selected from those obtained in said second set (E 2 ) together with the corresponding single braiding angle so as to minimize the number of combinations (C) of spindles groups and of braiding wire groups, a different combination (C) being allocated to each different series of consecutive diameters of electrical conductor bundles.