Coil and method and tool for producing coil

Abstract

The invention relates to a method for producing a coil (6), in which, by means of casting, a semi-finished product (5) in the form of an elongate conductor is formed in a cavity (2) of a casting tool and the coil (6) is formed following a demolding of the semi-finished product (5) by shaping this semi-finished product (5), wherein the form of the semi-finished product (5) may be derived from a shape of the finished coil (6) by stretching along a longitudinal axis of the coil (6) and/or by bending this longitudinal axis, and wherein the semi-finished product (5), during the shaping, is bent and compressed so that windings of the coil (5) already present in the semi-finished product (5) are brought closer to one another at least in some regions during the shaping and are brought into an arrangement along the longitudinal axis of the finished coil (6), wherein the conductor, whilst being shaped, is twisted or bent by no more than a right angle over the course of each individual turn. The invention also relates to a coil (6) produced in this way and to a casting tool which may be used to carry out the described method.

Dependencies are inferred from the claim text.