Abstract: The invention relates to a powder press (1) for producing a pressed article from a material that can be pressed, having a press frame (10), an upper and/or lower punch assembly (14) and a die assembly, which define a molding cavity, into which the material that can be pressed can be introduced, and an electric drive unit (12) which is operatively connected to the punch assemblies (14) and/or the die assembly, wherein, in order to mold the pressed article, the punch assemblies (14) and the die assembly can be moved relative to each other along a pressing axis (18) and pressed against each other by means of the electric drive unit (12). Furthermore, the operative connection between the electric drive unit (12) and one of the punch assemblies (14) comprises a toggle lever drive (16) which moves the punch assembly (14) into a pressing end position along the pressing axis (18).

Abstract: A powder press for producing a pressed piece from a powdered material, with a frame, a punch arrangement, and a die arrangement, which defines a die cavity into which the powdered material is fillable. To form the pressed piece, the punch arrangement and the die arrangement are movable relative to one another along a press stroke axis Z-Z; are pressible against each other; and one or both contains a linking element connected to two driving means, as well as a die plate and/or punch plate guided on guiding means along the stroke direction Z-Z and connected to the linking element. The driving means are each connected to the linking element by means of a flexible connecting means which lie on a first straight line X-X which is orthogonal to the press stroke axis Z-Z.

Abstract: A powder press for producing a metal powder compact comprises an upper punch arrangement and a lower punch arrangement (1) which accommodates the die arrangement (3) which forms the mold cavity (8) into which the metal powder is filled, whereupon the pressing process is carried out. The lower punch arrangement (1) is equipped with a plate (2) on which the die arrangement (3) is placed and to which plate (2) cross pressing devices (4) are fastened. Each cross pressing device (4) is equipped with a cross pressing punch (5) that can be linearly driven by a drive unit and that can be pressed into and retracted out of the mold cavity (8) in the cross pressing direction through an opening (6) in the die (7) which is essentially perpendicular to the pressing direction.

Abstract: A powder press for producing a metal powder compact comprises an upper punch arrangement and a lower punch arrangement (1) which accommodates the die arrangement (3) which forms the mold cavity (8) into which the metal powder is filled, whereupon the pressing process is carried out. The lower punch arrangement (1) is equipped with a plate (2) on which the die arrangement (3) is placed and to which plate (2) cross pressing devices (4) are fastened. Each cross pressing device (4) is equipped with a cross pressing punch (5) that can be linearly driven by a drive unit and that can be pressed into and retracted out of the mold cavity (8) in the cross pressing direction through an opening (6) in the die (7) which is essentially perpendicular to the pressing direction.

Abstract: A thread grinding machine comprising a headstock movable to-and-fro upon a machine frame. This to-and-fro movement is generated by a threaded rod driven by a spindle and transmission means and a rod member pivotably mounted at one end in a fixed adjustment arm of the headstock and at the other end guided to be axially and pivotably movable at the threaded rod. The rod member is also guided to be axially displaceable in a guide element pivotably mounted in a bearing block adjustably connected with the machine frame. A control device reverses the direction of rotation of the driven spindle.

Abstract: A hydraulic driven press for embossing, bending, stamping, especially fine or precision blanking, comprising a plunger or ram guided in an upright or stand. The plunger or ram is supported at the stand by means of pressure chambers and a piston, the pressure chambers comprising at least one actuation pressure compartment and a counter pressure compartment which are supplied by a pump or the like with a pressurized medium. Devices measure and determine the displacement path of the plunger or ram and the plunger or ram speed as well as the delivered quantity of pressurized medium. There is also provided a regulation device for regulating plunger or ram movement as a function of the aforementioned measurement values.