Abstract: The invention relates to a drawing press (10) having a first ram (17) and a second ram (18). The first ram (17) is moved in a working direction (A) by an electromotive first ram drive (25) and the second ram (18) by an electromotive second ram drive. The drawing press (10) also has a coupling means (35) which can be switched between an uncoupling state and a coupling state. In the uncoupling state, the two rams (17), (18) can move independently of one another in the working direction (A). In the coupling state, the coupling means (35) ensures that a relative movement between the two rams (17, 18) is prevented. The drawing press (10) can therefore be operated as a single-acting or double -acting press.

Abstract: The method forms a blank into the container body. A disc-shaped blank is punched out of a metal sheet. Following the punching process, the two edges of the blank are compressed. The disc-shaped blank thus obtains a symmetrical shape. With any of its two flat sides, the blank can be transported into a forming position, from which it is then formed into the container body. The edges obtain an accurately predetermined shape and can thus be arranged more easily in the desired forming position. Preferably, both edges are machines simultaneously in response to compressing the two edges of the blank.

Abstract: The apparatus transports cylindrical containers between different operating stations. The containers are thereby transported successively between adjacent operating stations in a stepwise manner. The apparatus encompasses a main drive, which is equipped to move receiving units of the apparatus along a predetermined path between two operating stations. Each receiving unit encompasses a holding device for holding an assigned container. The holding device of the receiving unit encompasses a cylindrical clamping mandrel comprising a plurality of clamping segments.

Abstract: The invention relates to a drive device for multiaxial transport of workpieces through successive machining stations of a machine tool, in particular of a multistage forming press, wherein the drive device comprises two gripper rails, wherein the two gripper rails are transversely displaceable independently of each other by a first transverse drive assigned to the first gripper rail and a second transverse drive assigned to the second gripper rail for the execution of a closing movement. The gripper rails are here vertically displaceable independently of each other for the execution of a lifting movement, and/or the gripper rails are longitudinally displaceable independently of each other for the execution of a transport movement.

Abstract: A press, a method for operating the press, and a lubricating arrangement for the press or for another working machine. The press has a press drive that is connected with a ram of the press, which ram can be moved via a transmission in a working direction (Z). The transmission has at least one sliding bearing with one and, preferably, several lubricating points. In a first press operating state, all the lubricating points of the sliding bearing are supplied with lubricant at a first lubricant pressure (p1). In a second press operating state, the thickness of the lubricant film formed in the sliding bearing drops below a minimum value in the region of at least one first lubricating point and lubricant is supplied thereto at a second greater lubricating pressure (p2) in order to prevent increased wear of the sliding bearing.

Abstract: A method of operating a servo press and apparatus therefore, including a press plunger and a servo drive and such a press, the press plunger is operated in accordance with a predetermined guide angle/position-curve based on a guide angle ? and the movement of the plunger is controlled in accordance with this curve with a tolerance which depends on the guide angle ?.

Abstract: The invention resides in a hydraulic cylinder (23) for a hydraulic drawing cushion (20) of a drawing press (10). The hydraulic cylinder (23) includes a first operating chamber (47), a second operating chamber (48), and a third operating chamber (53). An annular piston (45) with a first piston surface area (49) and a second piston surface area (50) separates the first operating chamber (47) from the second operating chamber (48). The first and the second piston surfaces (49, 50) have the same size. A front surface of the piston rod (33) forms a third piston surface (54) which is larger than the first and second piston surfaces. The third piston surface (54) delimits the third operating chamber (53) of the hydraulic cylinder (23). The first and the second operating chambers (47, 48) are provided for controlling the position and/or the movement of the piston rod (33). The third operating chamber (53) serves to control the metal sheet clamping force of the drawing press via the piston rod (33).

Abstract: For the manufacture of can bodies as they are needed for the manufacture of aerosol cans or beverage cans, a special tool 2 is provided which combines the manufacture of the cup as well as the transformation of the cup into a can body into a single tool 3. The process is based on preferably round metal sheets which are first drawn in a first draw-stretching step of the tool 2 into cups and then are draw-stretched in a second draw-stretch process, the further draw- and slide-down-stretch to form can bodies. The drawing arrangements are the same in both operating steps. The tools required therefore are simple sturdy tools providing for a simple sturdy manufacturing process.

Abstract: The invention relates to a press drive for a press or a press having a press drive. The invention also relates to a method for controlling the press drive by means of a control unit. The press drive is used for moving a ram of the press in a stroke direction H between an upper return point OT and a lower return point UT. It comprises a knee lever gear having a first lever and a second lever. A connecting rod engages on the knee lever of the two levers and is connected on the other end to an eccentric of an eccentric drive. The control unit can drive the eccentric drive in a first operating mode B1 or a second operating mode B2 or, in particular, also a third operating mode B3. In the first and the second operating modes B1, B2, the eccentric oscillates in a respectively different angle region W1, W2 about a rotation axis D of the eccentric drive, thus resulting in different force and movement states of the ram in both operating modes.

Abstract: A method of using data on the force flow in a press for the operation of a plunger, wherein the loads of the parts involved in the force flow can differ as a result of eccentrically operating forces, in such a way that the data about the respectively acting forces that, in accordance with Hooke's law, cause an extension or compression of a movement of the parts involved in the force flow, is measured and evaluated in relation to a drive device and a position of the plunger, whereupon a skewed position of the plunger is permitted or a skewed position of the plunger is counteracted or a skewed position of the plunger is set during operation of the press.

Abstract: In a press comprising at least one tool part with certain rigidity, the rigidity of the tool part is adjustable by changing the coupling of the tool part to the plunger or the press table to control the transmission of deformations by bending.

Abstract: A can body (II) having a can base (13) and a can wall (14) is shaped by a wall ironing process starting with a blank (12). A drawing punch (15) moves the blank (12) through a wall ironing container (34) from an opening (35) to an exit (36). The edge (R) of the can body (II) opposite the can base (13) is separated using a cutting device (45), which has a force generating unit (46) arranged adjacent to the exit (36) and at least one cutting edge (26, 27) which can be arranged on the drawing punch (15). The force generating unit (46) generates a force (F) onto the can wall (14) edge (R) to be separated, whereby the edge is sheared off on the at least one cutting edge (26, 27). The can body (II) is located on the drawing punch (15) while the edge (R) is being separated.

Abstract: A casting valve configured to supply a melt of a casting device includes a valve housing comprising a melt channel connection as an inlet and a valve outlet as a run-out. A melt channel is configured to be pressurizable via a casting pressure. A valve compartment is configured to receive the melt. The valve compartment is connectable via the melt channel connection with the melt channel. A closing device is configured to modify a cross-sectional surface of the valve outlet. A post-compression piston is configured to post-compress the melt after a completion of a mold filling.

Abstract: A casting device includes a mold cavity configured to form a hollow space for a cast part, a casting chamber for a metal melt, a gating system, an annular duct for the metal melt, and at least two annular duct connections configured to connect the casting chamber to the annular duct. The annular duct is configured to be connectable with the mold cavity via the gating system.

Abstract: The invention is to a device and method, for cutting a can blank in which case an end section of the can blank is severed. The can blank is moved by means of a conveyor arrangement at a constant speed about a first axis of rotation. Preferably, a laser beam is used as the cutting means. A deflecting arrangement deflects the laser beam to a focal point where the side surface of the can blank is located. Due the rotation of the can blank about its longitudinal axis, the axial end section of said can blank is severed. The focal point of the laser beam does not change relative to the longitudinal axis of the can blank during the laser cutting operation.

Abstract: A method for manufacturing a cast component with a casting device includes providing a casting device. The casting device comprises a filling chamber, a mold cavity comprising a hollow space, runners comprising at least one of a different length and a different cross-section, and a plunger arranged in the filling chamber. The metal melt is provided in a fluid state in the filling chamber. The metal melt is advanced via the runners from the filling chamber to the mold cavity by advancing the plunger in the filling chamber. Electromagnetic fields are provided. A flow velocity of melt currents in the respective runners is increased or decreased via the electromagnetic fields so that a melt front in each of the runners reaches the mold cavity when the filling chamber has been completely filled by the plunger.

Abstract: The invention relates to a drive device for multiaxial transport of workpieces through successive machining stations of a machine tool, in particular of a multistage forming press, wherein the drive device comprises two gripper rails, wherein the two gripper rails are transversely displaceable independently of each other by a first transverse drive assigned to the first gripper rail and a second transverse drive assigned to the second gripper rail for the execution of a closing movement. The gripper rails are here vertically displaceable independently of each other for the execution of a lifting movement, and/or the gripper rails are longitudinally displaceable independently of each other for the execution of a transport movement.

Abstract: The invention relates to a press having a direct electric drive, without any motion transmitting apparatus, such as, for example, gears or gear drives wherein the electric direct drive is located between an eccentric 3 and a connecting rod 6 and brings about a relative movement between the eccentric 3 and the connecting rod 6.

Abstract: A method and a press are proposed for an energy-efficient drive of a press (1) with a bottom drive, in which a drive device (2) disposed in a bottom section (3), a plunger (1.1) executing a stroke (H) and receiving an upper tool part (1.2) with at least one acting tie rod (2.1.2) of a drive train (2.1) are provided and the upper tool part (2.1) corresponding to a bottom tool part (3.2) disposed in the bottom section (3) machines or forms a work piece (5). The drive device (2) is operated by at least one motor (2.1.1) and by way of a control and regulation device (4) connecting the motor (2.1.1) and the drive train (2.1). Each drive train (2.1) can be operated by its own motor (2.1.1). When using a drawing device with a holder (3.3.1), it is operated in the change and during at least a partial path of the respective stroke (H) by the drive train (2.1) while observing a shaft-type free space (3.

Abstract: A method for operating a machine tool/work machine includes providing a machine tool/work tool comprising a stroke element, a connection arrangement comprising a traction/pressure element and at least one traction/pressure point, a detachable connection comprising a connection element, a compensation element or a unit which generate a pre-stress, a (cutting) impact dampening, and compensates for a weight of the stroke element in the connection arrangement. The drive device acts on a work piece to be machined via the connection arrangement with the traction/pressure element and the at least one traction/pressure point via the stroke element. A force is produced via the compensation element or a unit corresponding to a weight of the traction/pressure element, the force being initiated independently from a drive force for the stroke element, to generate a pre-stress, a (cutting) impact dampening and a compensation of the weight of the stroke element in the connection arrangement.