A cylindrical sintered material made of metal, in which one of an inner peripheral surface and an outer peripheral surface of the sintered material includes: a plurality of helical teeth arranged in parallel along a circumferential direction of the sintered material; and a sizing mark provided on at least a part of a tooth bottom surface, a tooth surface, and a tooth tip surface of each of the helical teeth, the helical tooth has a tooth profile error less than or equal to 6 μm, and the helical tooth has a tooth trace error less than or equal to 27 μm.

A plane plate for a pressing tool of a press in which the plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction. The plane plate has a link to the at least one lifting cylinder, a centrally disposed receptacle 9 for contacting the punch or a punch holder of the press and at least one at least partially cylindrical guiding face, which for contacting a first guide column is parallel with the axial direction. The plane plate has, in at least a first cross section which runs through the link and the receptacle parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction, at least a first region between the link and the receptacle, having a wall thickness, wherein the wall thickness in the first region and so as to be spaced apart from the receptacle as well as from the link has at least a minimum.

A plane plate for a pressing tool of a press in which the plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction. The plane plate has a link to the at least one lifting cylinder, a centrally disposed receptacle 9 for contacting the punch or a punch holder of the press and at least one at least partially cylindrical guiding face, which for contacting a first guide column is parallel with the axial direction. The plane plate has, in at least a first cross section which runs through the link and the receptacle parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction, at least a first region between the link and the receptacle, having a wall thickness, wherein the wall thickness in the first region and so as to be spaced apart from the receptacle as well as from the link has at least a minimum.

A metal part with a wall thickness less than 5 mm includes a preform made from a flexible composite sheet, a flexible composite sheet segment, and an appended insert including a fastening portion that is sandwiched between a rear end of the preform and the flexible composite sheet segment. The flexible composite sheet segment encloses the fastening portion of the appended insert.

A metal part with a wall thickness less than 5 mm includes a preform made from a flexible composite sheet, a flexible composite sheet segment, and an appended insert including a fastening portion that is sandwiched between a rear end of the preform and the flexible composite sheet segment. The flexible composite sheet segment encloses the fastening portion of the appended insert.

An apparatus for forming E-shaped or U-shaped dust cores includes: a die; an upper punch arranged to be insertable and removable into and from the die; a lower punch arranged so as to face the upper punch and to be insertable and removable into and from the die; and a core rod arranged to be insertable and removable into and from the upper punch and the lower punch. The upper punch and the lower punch each has a horizontal cross-sectional shape corresponding to the horizontal cross-sectional shape of two dust cores that are arranged distant from each other with their respective magnetic pole surfaces facing each other. The core rod has a horizontal cross-sectional shape corresponding to the horizontal cross-sectional shape of a hollow part formed between the two dust cores that are arranged distant from each other with their respective magnetic pole surfaces facing each other.

An apparatus for forming E-shaped or U-shaped dust cores includes: a die; an upper punch arranged to be insertable and removable into and from the die; a lower punch arranged so as to face the upper punch and to be insertable and removable into and from the die; and a core rod arranged to be insertable and removable into and from the upper punch and the lower punch. The upper punch and the lower punch each has a horizontal cross-sectional shape corresponding to the horizontal cross-sectional shape of two dust cores that are arranged distant from each other with their respective magnetic pole surfaces facing each other. The core rod has a horizontal cross-sectional shape corresponding to the horizontal cross-sectional shape of a hollow part formed between the two dust cores that are arranged distant from each other with their respective magnetic pole surfaces facing each other.

A plane plate for a pressing tool of a press in which the plane plate for activating a punch of the press is by way of at least one lifting cylinder is displaceable along an axial direction. The plane plate has a link to the at least one lifting cylinder, a centrally disposed receptacle for contacting the punch or a punch holder of the press and at least one at least partially cylindrical guiding face which for contacting a guide column is parallel with the axial direction. The plane plate in at least a first cross section which between the receptacle and the guiding face runs parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction has at least a first region with a wall thickness and a first centerline, wherein the first centerline runs at least partially at a first angle of at least 10 angular degrees and of at most 80 angular degrees in relation to the radial direction.

A plane plate for a pressing tool of a press in which the plane plate for activating a punch of the press is by way of at least one lifting cylinder is displaceable along an axial direction. The plane plate has a link to the at least one lifting cylinder, a centrally disposed receptacle for contacting the punch or a punch holder of the press and at least one at least partially cylindrical guiding face which for contacting a guide column is parallel with the axial direction. The plane plate in at least a first cross section which between the receptacle and the guiding face runs parallel with the axial direction and along a radial direction that runs so as to be perpendicular to the axial direction has at least a first region with a wall thickness and a first centerline, wherein the first centerline runs at least partially at a first angle of at least 10 angular degrees and of at most 80 angular degrees in relation to the radial direction.

According to a method for pressing a green compact from a sintering powder for producing a gear having a first track and a second track, wherein a first helical toothing with a first helix angle and a first diameter is produced as the first track and a second helical toothing with a second helix angle and a second diameter is produced as the second track, the sintering powder is filled into a mold cavity of a die, and then the sintering powder is pressed to form the green compact with an upper stamp and a lower stamp, and wherein the first and the second helical toothings are produced having the same pitch height.