Abstract: A mold assembly for producing a casting core for a cooling jacket of an electric motor has an external mold and an internal mold enclosed by the external mold. The external mold forms an outer wall and the internal mold an inner wall of the core molding cavity fillable with a core material and having a cylindrical shape. The internal mold has two first mold shells and two second mold shells. The two first mold shells and the two second mold shells jointly form the inner wall of the core molding cavity. The second mold shells are arranged between the first mold shells. A first demolding mechanism is arranged between the first mold shells and enables movement of the first mold shells toward one another. A second demolding mechanism is arranged between the second mold shells and enables movement of the second mold shells toward one another.

Abstract: For producing a cylindrical surface that has a surface structure of predetermined geometry suitable for application of material by thermal spraying, a geometrically predetermined groove structure of minimal depth and width is introduced into the surface by a tool embodied as a follow-on tool in that a groove cross-section is processed successively to a final size. In order for the surface to be producible in mass production with constant quality, the groove structure is worked in such that first a base groove is introduced with a groove bottom width that is smaller than the groove bottom width of the finished groove. Subsequently, at least one flank of the base groove is processed for producing an undercut groove profile by a non-cutting action or cutting action wherein the introduced groove structure is deformed in such a way that the groove openings are constricted by upsetting deformations of material.

Abstract: A casting mold of a casting assembly is openable in first and second release directions different from each other. The casting mold has a first base plate transverse to the first release direction and an opposite second base plate. First mold parts on first base plate and second mold parts on second base plate define first and second casting cavities. First and second lateral parts are arranged between first and second base plates. A third mold part on the first lateral part defines the first casting cavity. A fourth mold part on the second lateral part defines the second casting cavity. A fifth mold part on first base plate defines the first and second casting cavities. The first and second lateral parts are movable in second release direction. The first mold parts are moveably supported on guides of first base plate extending in second release direction.

Abstract: For producing a cylindrical surface that has a surface structure of predetermined geometry suitable for application of material by thermal spraying, a geometrically predetermined groove structure of minimal depth and width is introduced into the surface by a tool embodied as a follow-on tool in that a groove cross-section is processed successively to a final size. In order for the surface to be producible in mass production with constant quality, the groove structure is worked in such that first a base groove is introduced with a groove bottom width that is smaller than the groove bottom width of the finished groove. Subsequently, at least one flank of the base groove is processed for producing an undercut groove profile by a non-cutting action or cutting action wherein the introduced groove structure is deformed in such a way that the groove openings are constricted by upsetting deformations of material.

Abstract: For producing a cylindrical surface that has a surface structure of predetermined geometry suitable for application of material by thermal spraying, a geometrically predetermined groove structure of minimal depth and width is introduced into the surface by a tool embodied as a follow-on tool in that a groove cross-section is processed successively to a final size. In order for the surface to be producible in mass production with constant quality, the groove structure is worked in such that first a base groove is introduced with a groove bottom width that is smaller than the groove bottom width of the finished groove. Subsequently, at least one flank of the base groove is processed for producing an undercut groove profile by a non-cutting action or cutting action wherein the introduced groove structure is deformed in such a way that the groove openings are constricted by upsetting deformations of material.