A schematic presentation of nozzle straightness               The digital measurement of nozzle exit radius

The Criteria of Top-Grade Wire Guide Nozzle

          In your capacity as a world-renowned coil manufacturer, what are your criteria in choosing wire guide nozzles for your coil winding machines? We would venture to say that you are looking for:

                                    High wear resistance
                                    Scratch-proof guidance
                                    Straightness and Stiffness
                                    Precise exit radii

          COSMOS Wire Guide Nozzles meet your discerning requirements.

High Wear Resistance

          This is assured by the choice of materials for wear elements possessing a minimum hardness in excess of Vickers 1,000 (HRC 70), namely: Alumina, Ruby, Sapphire, Tungsten Carbide.

Scratch-Proofing

          To ensure Scratch-proofing, the wire-guiding surfaces are mirror finished by diamond lapping to a surface roughness of 2 – 4 micro inches Ra or better, material permit.

Straightness and Stiffness

          Straightness and Stiffness are defined by the wire exit being concentric and inflexible with respect to the nozzle locating Ø.  In plain terms, the wire should exit from the nozzle concentric to the locating Ø to within 0.02 mm, with or without load. A schematic presentation is shown at upper left.

Precise Exit Radii

          Because the coil winding nozzle's Exit Radii governs the angle of the wire exit from one coil to the next, it should be monitored to + / - 0.025 mm. This is done by digital measurement, shown at upper right.

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