A helical sector gear having a body and a gear segment having a plurality of helical teeth. The gear segment has a toothed sector, on which all of the helical teeth are formed, and spacing segments on the opposite circumferential ends of the toothed sector. Each of the spacing segments has a circumferential surface, which is longer than a pitch of the helical teeth, and a radial surface that is formed in a helical manner that conforms to the helix angle of helical teeth. A die set for forming the helical sector gear and a related method are also provided.

A hot-press device includes: a heating furnace; a pair of punches which includes an upper punch and a lower punch provided in the heating furnace and vertically facing each other; a lower press ram which is connected to a lower surface of the lower punch; an upper press ram which is connected to an upper surface of the upper punch; and a pressing device which is connected to any one or both of the lower press ram and the upper press ram and presses the punch so that the pair of punches are close to each other, in which the lower press ram and/or the upper press ram includes a plurality of individual press rams which are disposed at intervals, each individual press ram having one end coupled to the pair of punches.

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 press arrangement and a method for producing and processing compacts from powder material include a controller, a press frame, a pressing unit being disposed on the press frame for pressing the compact and having a die with a cavity for receiving powder material, at least two punches which, together with the cavity, provide a mold for a compact and at least one drive unit for moving at least one punch relative to the other punch along a pressing axis. A further processing module has at least one processing unit for machining a compact by metal cutting. The controller at least partially ejects or removes a compact from the die after pressing and, after the ejection holds the compact clamped between the punches. The controller uses the processing unit to process a compact being at least partially ejected from the die and held clamped between the punches.

A powder molding press method of a green compact for a cutting insert including: filling a molding space with raw material powder in a state where a lower punch is inserted from below into a hole portion of a die; performing preliminary molding by inserting an upper punch for preliminary molding including a preliminary molding surface having a shape different from a shape obtained by inverting the upper surface of the green compact for a cutting insert in a plane symmetry into the molding space from above such that a thick portion between the upper and lower surfaces in the direction of the insert center line is filled with more raw material powder than a thin portion therebetween, relative to a state before the step of performing the preliminary molding; and inserting an upper punch for final molding into the molding space from above to powder-molding-press the raw material powder.

The invention relates to a method for pressing a green compact (1) for producing a sintered molded part from a sintering powder, according to which the sintering powder is filled into a mold cavity (43a) of a die (43), and then the sintering powder is pressed by at least one punch, which is pushed at least partly into the mold cavity (43a), to form a green compact (1), wherein to form an undercut in the green compact (1) a portion of the sintering powder is pushed by a punch out of a first plane of the die (43) by forming an opening (11) in the first plane in pressing direction into a second plane of the die (11) different from the first plane. The invention also relates to a device (12) for performing said method and a correspondingly produced sintered molded part.

The invention relates to a method for producing a green compact composite comprising at least a first partial green compact and a second partial green compact, wherein, within one pressing cycle, a powder is introduced into a filling chamber and then separated into a first partial quantity and into a second partial quantity, and, within the same pressing cycle, the respective partial quantities are pressed to form a first partial green compact and a second partial green compact and the partial green compacts are amalgamated after the pressing, wherein the amalgamation forms a press fit between the first partial green compact and the second partial green compact and produces a predetermined breaking point in the green compact composite. Furthermore, the invention proposes a green compact composite, a sintered component and also a press, each of which can be based on the proposed method.

A plane plate for a pressing tool of a press; wherein the plane plate for activating a punch of the press by way of at least one lifting cylinder is displaceable along an axial direction; wherein the plane plate has a link to the at least one lifting cylinder, at least one cylindrical guiding face which for contacting a guide column is parallel with the axial direction, and a centrally disposed receptacle for contacting the punch or a punch holder of the press; wherein 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 in which a wall thickness of the plane plate is continuously variable.

A green compact of a sintered connecting rod is provided comprising a first end having a circular shape formed from a first powder, and connected to a crank shaft. A second end having a circular shape is formed from a second powder, and connected to a piston, wherein a diameter of the first end is larger than a diameter of the second end. A rod connects the first end and the second end.

Disclosed herein is a method and apparatus for forming pellets in a non-ambient environment such as a strong magnetic field. The apparatus includes a die body, a die bottom, a short push pin, a long push pin, a press tube, and an extended push pin. A powder is loaded into the die body, which is then positioned in the non-ambient environment, and the powder allowed to equilibrate. A pellet is then formed by pressing on the extended push pin while the powder is in the non-ambient environment.