Method and apparatus for applying uniaxial compression stresses to a moving wire
OwnerAlfred R. Austeninventor
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Abstract
An apparatus and method for moving a wire along its own axis against a high resistance to its motion causing a substantial uniaxial compression stress in the wire without allowing it to buckle. The apparatus consists of a wire gripping and moving drive wheel and guide rollers for transporting the moving wire away from the drive wheel. Wire is pressed into a peripheral groove in a relatively large diameter, rotating drive wheel by a set of small diameter rollers arranged along part of the periphery causing the wire to be gripped by the groove.
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A method for applying uniaxial compression stresses to a moving wire comprising the steps of:
- moving said wire along an articulate path;
- applying shear stress at multiple gripping locations along the surface of the wire as it is moved along said path and
- providing resistance to said wire moving along said path in combination with shear stress on said moving wire to cause high uniaxial compression stresses in said wire.
A method for eliminating high shear stress concentrated at an interface between core and cladding during extrusion of a composite wire comprising the steps of:
- applying axial compression stresses to said wire prior to entering an extrusion apparatus, said compression stresses applied at a level to reduce said shear stress at said interface to a low shear stress.
Dependencies are inferred from the claim text.