The invention relates to an electrotechnical coil, to a method for producing same, and to an electromagnet or an electric machine comprising at least one such coil. The aim of the invention is to produce and use an electrotechnical coil for achieving an increased slot fill factor reliably and easily in a reproducible and economical manner. This is achieved in that the method according to the invention has the steps: step A: casting an electrotechnical coil with at least one winding which runs about a coil axis; and step B: shaping the coil, thereby changing the cross-section Q, Q of the at least one winding, such that the centroid FS, FS of the cross-section Q, Q of the at least one winding is displaced at least partly in the radial direction R relative to the coil axis A.

The invention relates to an electrotechnical coil, to a method for producing same, and to an electromagnet or an electric machine comprising at least one such coil. The aim of the invention is to produce and use an electrotechnical coil for achieving an increased slot fill factor reliably and easily in a reproducible and economical manner. This is achieved in that the method according to the invention has the steps: step A: casting an electrotechnical coil with at least one winding which runs about a coil axis; and step B: shaping the coil, thereby changing the cross-section Q, Q of the at least one winding, such that the centroid FS, FS of the cross-section Q, Q of the at least one winding is displaced at least partly in the radial direction R relative to the coil axis A.

A wire coil component includes a shaped article, a wire wound around the shaped article, and terminal electrodes to which the ends of the wire are connected. The shaped article is formed from a magnetic resin containing a binder resin and a magnetic metal powder and has a thermal expansion coefficient of about 12 ppm/K or more and about 16 ppm/K or less (i.e., from about 12 ppm/K to about 16 ppm/K) from 55 C. to 150 C.

A wire coil component includes a shaped article, a wire wound around the shaped article, and terminal electrodes to which the ends of the wire are connected. The shaped article is formed from a magnetic resin containing a binder resin and a magnetic metal powder and has a thermal expansion coefficient of about 12 ppm/K or more and about 16 ppm/K or less (i.e., from about 12 ppm/K to about 16 ppm/K) from 55 C. to 150 C.

The invention provides a method and a device for producing a winding element from a supplied wire, in particular from a round copper wire, said method and device allowing the economical and flexible production of a winding element which, when subsequently used in the field of electrical engineering as a coil or inductor fitted in a stator, ensures the highest possible groove filling factor. For this purpose, the wire is wound to a three-dimensional shape and the cross section of the wire is changed simultaneously, as a result of which separate method steps and therefore tool arrangements for three-dimensional winding of the wire as well as the change of the cross-section of the wire can advantageously be dispensed with.

The invention provides a method and a device for producing a winding element from a supplied wire, in particular from a round copper wire, said method and device allowing the economical and flexible production of a winding element which, when subsequently used in the field of electrical engineering as a coil or inductor fitted in a stator, ensures the highest possible groove filling factor. For this purpose, the wire is wound to a three-dimensional shape and the cross section of the wire is changed simultaneously, as a result of which separate method steps and therefore tool arrangements for three-dimensional winding of the wire as well as the change of the cross-section of the wire can advantageously be dispensed with.

A wire coil component includes a shaped article, a wire wound around the shaped article, and terminal electrodes to which the ends of the wire are connected. The shaped article is formed from a magnetic resin containing a binder resin and a magnetic metal powder and has a thermal expansion coefficient of about 12 ppm/K or more and about 16 ppm/K or less (i.e., from about 12 ppm/K to about 16 ppm/K) from 55 C. to 150 C.

A wire coil component includes a shaped article, a wire wound around the shaped article, and terminal electrodes to which the ends of the wire are connected. The shaped article is formed from a magnetic resin containing a binder resin and a magnetic metal powder and has a thermal expansion coefficient of about 12 ppm/K or more and about 16 ppm/K or less (i.e., from about 12 ppm/K to about 16 ppm/K) from 55 C. to 150 C.

In a coil forming device, an edge line in an escape region is formed so that a clearance between the edge line in the escape region and a recess portion in an axis direction is larger than a minimum clearance between the edge line in an inclined region and the recess portion in the axis direction. When a second die is rotated relative to a first die in the clockwise direction the flat-square conductive material end is bent in flatwise bending by the recess portion and the inclined region of a protrusion portion, and then, the flat-square conductive material end reaches the escape region.

A coil-forming apparatus for forming a bare coil wire into a U-shape, the apparatus including: one bare coil-wire holding unit that winds and holds a bare coil wire; a take-up drum that includes one or a plurality of housing units that house the bare coil wire supplied from the one bare coil wire holding unit at a circumference; a cutting member that cuts the bare coil wire housed in housing units and wound around the take-up drum, at a portion of the circumference of the take-up drum; a drawing member for drawing the bare coil wire outward in a radial direction of the take-up drum after being cut by the cutting member, from a position separated from the cutting member; and a forming unit that forms the bare coil wire drawn by the drawing member into a U-shape.