A press brake includes a ram to which an upper or lower tool can be attached; a movable ram driver; and a controller that controls the ram driver, wherein the ram driver includes a rotation/linear motion converter composed of a screw fixed to the ram and moves upward and downward as the ram moves upward and downward, and a nut screw-coupled with the screw; a drive rotation body arranged rotatably about a rotation axis of the nut; a first motor arranged in a fixed state; a first power transmitter that transmits rotation of the first motor to the nut at high speed and with low torque; a second motor arranged in a fixed state; a second power transmitter that transmits rotation of the second motor to the drive rotation body at low speed and with high torque; and a clutch provided between the nut and the drive rotation body.

A method for pressing a workpiece with a predetermined pressing force uses a forming tool coupled with an electric motor via a spindle drive that converts the rotational movement of the electric motor drive shaft to a translational movement of the forming tool. The method includes: accelerating the electric motor in a first rotational direction to a predetermined maximal speed of rotation; operating the electric motor at the maximal speed until the drive shaft has completed a predetermined number of revolutions; reducing the speed of rotation of the electric motor to a predetermined reduced speed of rotation; operating the electric motor at the reduced speed until a pressing force increase exceeding a predetermined threshold value is detected by a measuring unit that follows the electric motor; forming the workpiece with constant detection of the pressing force by the measuring unit until the predetermined pressing force has been reached.

A bonding device includes a flexible platen disposed between an upper platen assembly (9) and a transmission device and within a vacuum chamber (6). The flexible platen can expand to apply a downward pressure to the upper platen assembly (9) connected thereto. Under the effect of the pressure, the upper platen assembly (9) slowly moves downward until the upper platen assembly (9) itself and a lower platen assembly (7) respectively come into tight contact with objects to be bonded. After that, the flexible platen continues exerting the downward pressure on the upper platen assembly (9). In this way, the pressure applied by the upper platen assembly (9) to the objects to be bonded is uniform. Meanwhile, because of slow expansion of the flexible platen, the uniform pressure is applied slowly by the upper platen assembly (9).

A press, comprising a drive train having a motor and a press ram, and comprising a housing, which includes a first base plate, a second base plate and at least three columns arranged therebetween. The columns connect the two base plates to one another and keep them spaced apart. A first opening is arranged in the first base plate and a second opening is arranged in the second base plate. At least a part of the motor is arranged on a first side of the first base plate facing away from the columns and at least a part of the press ram is arranged on a second side of the second base plate facing away from the columns. The motor and the press ram are interconnected through the first and second openings.

A press assembly includes an elongated guide, and a ram that is at least partially mounted to the elongated guide and axially movable relative to the elongated guide. A fabricating tool is disposed at an outboard end portion of the ram. The ram including an internal chamber. A cylinder is disposed within an internal chamber of the ram and is secured to the ram such that the cylinder is fixed relative to the ram axially and rotationally so that the cylinder and ram move in unison. A spindle having a driving end region and a driven end region opposite the driving end region is disposed at least partially within a cylindrical bore of the cylinder. A motor is adapted to rotate the driving end region of the spindle to effect an axial displacement of the cylinder and the ram.

A press plate block is provided and has capacity to conduct and transfer heat, a mounting interface for mounting the block onto a press machine, a press surface defining a press footprint the press surface elevated above the rest of the top surface area and having a peripheral edge, a first and second interface for accepting heating and temperature sensing components, a first radiused groove disposed adjacently to the peripheral edge of the press surface and a second radiused groove disposed orthogonally to the first groove, the second groove intersecting the first groove at a lower elevation, the second groove breaking out of the block at one end of the block.

In a press machine vertically moving a ram by turning a threaded member, the ram has a bearing holder that holds a bearing whose outer ring is solidly engaged with the bearing holder and whose inner ring is solidly fitted to a lower end part of the threaded member. A fine clearance is formed between a lower face of the threaded member and a bottom face of the bearing holder so that the threaded member and bearing holder are allowed to rotate relative to each other. The fine clearance is set so that, when load is applied to the ram to cause a relative slight movement in a vertical direction between the inner and outer rings of the bearing, the lower face of the threaded member and the bottom face of the bearing holder come into contact with each other.

In an example embodiment, a universal compacting mechanism can be selectively engaged with an existing trash receptacle of any size or shape. The universal compacting mechanism comprises a housing assembly, a motor, a power source, a plate assembly, and an attachment mechanism. The housing assembly includes a threaded rod extending along at least part of the longitudinal axis of the housing assembly. The motor engages with the threaded rod for rotating the threaded rod about the longitudinal axis of the threaded rod. The power source is electrically connected to the motor for providing power to the motor. The plate assembly includes a compaction plate. The plate assembly is engaged with the threaded rod such that rotation of the threaded rod causes a raising or lowering of the plate assembly. The attachment mechanism selectively engages the trash compactor to an existing trash receptacle of any size or shape.

A press brake includes a ram to which an upper or lower tool can be attached; a movable ram driver; and a controller that controls the ram driver, wherein the ram driver includes a rotation/linear motion converter composed of a screw fixed to the ram and moves upward and downward as the ram moves upward and downward, and a nut screw-coupled with the screw; a drive rotation body arranged rotatably about a rotation axis of the nut; a first motor arranged in a fixed state; a first power transmitter that transmits rotation of the first motor to the nut at high speed and with low torque; a second motor arranged in a fixed state; a second power transmitter that transmits rotation of the second motor to the drive rotation body at low speed and with high torque; and a clutch provided between the nut and the drive rotation body.

A bonding device includes a flexible platen disposed between an upper platen assembly (9) and a transmission device and within a vacuum chamber (6). The flexible platen can expand to apply a downward pressure to the upper platen assembly (9) connected thereto. Under the effect of the pressure, the upper platen assembly (9) slowly moves downward until the upper platen assembly (9) itself and a lower platen assembly (7) respectively come into tight contact with objects to be bonded. After that, the flexible platen continues exerting the downward pressure on the upper platen assembly (9). In this way, the pressure applied by the upper platen assembly (9) to the objects to be bonded is uniform. Meanwhile, because of slow expansion of the flexible platen, the uniform pressure is applied slowly by the upper platen assembly (9).