Electromagnetic Induction Method and Apparatus Therefor for Collapsing and Propelling a Deformable Workpiece.
Patent, Filed 20 Feb 85, patented 14 Apr 87,
DEPARTMENT OF THE NAVY WASHINGTON DC
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An improved electromagnetic induction method and apparatus is described for simultaneously collapsing and propelling a deformable annular-shaped workpiece of relatively lightweight construction in a direction outwardly of the apparatus and along its axis wherein the apparatus is made up of seven different embodiments for carrying out the method. Each apparatus is generally comprised of a framework. The framework includes at least one pulse coil means and a power supply circuit is connected to the pulse coil means. Annular-shaped surface portions of various embodiments of the apparatus define part of an aperture or passageway for receiving a workpiece and function to position the workpiece in mutual inductance relation to the coil means. The pulse coil means, when energized after positioning of a workpiece in an apparatus, causes the formation of a series of magnetic forces acting on the workpiece that causes progressive collapsing of the workpiece in a direction towards the axis of the apparatus so as to form a slug of solid-like construction and approximately cylindrical or spherical shape.
- Manufacturing and Industrial Engineering and Control of Production Systems
- Electricity and Magnetism