Method for producing a spiral-shaped body with a compressed spiral
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsMatthias BUSSE, Franz-Josef WÖSTMANN
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Abstract
A method for producing a spiral-shaped body, in particular an electric coil, made of an electrically conductive material. First, the material is wound about a mandrel in a casting mold in order to form a coil with a plurality of windings, and pressure is then exerted onto the coil in the axial direction of the coil. The pressure leads to a deformation and compression of the cross-section of the individual windings in the axial direction of the coil. By compressing the coil, an optimal use of space is achieved with an electric coil, for example for an electric machine.
Claims11
1-10, (canceled)
A method for producing a helical body including an electrical coil from an electrically conductive material, comprising:
- first winding the material, in a strand shape, around a mandrel to form a helix having a multitude of turns,
- next, prior to exerting a pressure, the mandrel and the helix are placed into a die, and a base plate fixedly connected to the mandrel is connected to the die by way of a form-locked connection, including a bayonet catch,
- then a pressure is exerted on the helix in an axial direction thereof, which results in a deformation and a compression of the cross-sections of the individual turns in the axial direction of the helix.
Dependencies are inferred from the claim text.