Method and apparatus for applying uniaxial compression stresses to a moving wire
OwnerAlfred R. Austeninventor
Life of this patent
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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.
Claims14
An apparatus for moving a wire or other elongated rod like object along its own axis comprising in combination:
- a wheel mounted for rotation about an axle, said wheel having at least one continuous generally “V” shaped groove in a peripheral surface of said wheel;
- a plurality of pressure rollers juxtaposed to said peripheral surface of said wheel, each of said pressure rollers mounted for rotation about an axis parallel to said axle of said wheel, each of said pressure rollers adapted to exert pressure on a wire disposed in said groove in said wheel, said pressure rollers and said drive wheel co-acting to move said wire in the direction of rotation of said wheel, and;
- a plurality of guide rollers juxtaposed to said peripheral surface of said wheel said guide rollers disposed tandemly immediately after said pressure rollers in a direction of rotation of said wheel, said guide rollers dispersed along an arc having a radius longer than a radius of said wheel, said arc tangent to said peripheral surface of said wheel where a first of said guide rollers is positioned, whereby said guide rollers position said wire for entry into a wire processing device.
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.