A press device includes a press device main body and a main breaker to supply or stop power from an external power supply to the press device main body. The press device main body includes a slide, a bolster disposed below the slide, a servomotor configured to drive the slide, a power storage unit able to supply stored power to the servomotor, a discharge unit configured to discharge a charge stored in the power storage unit, and a first contactor. An upper die can be mounted on the slide. A lower die can be disposed on the bolster. The first contactor interrupts an electrical connection between the power storage unit and the discharge unit in an energized state and electrically connects the power storage unit and the discharge unit in a non-energized state. The first contactor is supplied with power for energization from the external power source without passing through the main breaker.

Disclosed is a press including a press part, at least two upper levers and at least two lower levers and a telescopic arm arranged to be moved between a shortened and an extended position by way of an actuator. The upper levers and the lower levers have ends arranged to rotate around a point of rotation. Also disclosed is a construction.

A press device subjects a material to pressing using an upper die and a lower die. The press device includes a slide, a bolster disposed below the slide, a servomotor configured to drive the slide, a plurality of capacitor units, and a control unit. The upper die can be attached to a lower face of the slide. The lower die can be placed on the bolster. The capacitor units include a plurality of electric double layer capacitors. The plurality of capacitor units are configured to be able to supply stored electric power to the servomotor. The control unit executes an operation mode in which pressing is performed using capacitor units other than unused capacitor units when the plurality of capacitor units have been set so that at least a portion of the capacitor units are not used.

A press device subjects a material to pressing using an upper die and a lower die. The press device includes a slide, a bolster disposed below the slide, a servomotor configured to drive the slide, a plurality of capacitor units, and a control unit. The upper die can be attached to a lower face of the slide. The lower die can be placed on the bolster. The capacitor units include a plurality of electric double layer capacitors. The plurality of capacitor units are configured to be able to supply stored electric power to the servomotor. The control unit executes an operation mode in which pressing is performed using capacitor units other than unused capacitor units when the plurality of capacitor units have been set so that at least a portion of the capacitor units are not used.

A press machine includes a display unit which displays a first image in a circular shape corresponding to a rotation of an eccentric mechanism and representing one stroke of slide operation and a second image in a circular-arc shape corresponding to an operation of an attachment device interlocked with the press machine, and an operation unit which receives an input operation. The first image indicates at least one slide operation region. The second image is placed concentrically with the first image in relation to the slide operation region. The second image has opposed ends each allowed to move in response to the input operation in a direction in which the second image extends.

A pressing which a ram repeats an up-and-down motion for press working machine that performs a continuous operation in by a press die held by a die holding portion of a bolster and a die holding portion of the ram includes: a die positioning portion that positions the press die in a first direction being a moving direction of the ram; a position adjustment mechanism having a servomotor as a drive source and optionally changing a position where the press die is positioned by the die positioning portion; and a drive control unit driving, when position change data is given during the continuous operation, the servomotor such that the position where the press die is positioned by the die positioning portion is changed to a position corresponding to the position change data when reaction force of the press working not applied to the die positioning portion during continuous operation.

A motor-driven powder molding machine according to the present disclosure molds powder using an upper mold and a lower mold and includes, in each of the upper and lower molds, a main ram for operating the upper or lower mold through a main shaft; an auxiliary ram for operating the upper or lower mold through an auxiliary shaft in synchronization with the main ram; and a pressure detector for detecting a pressure in an axial direction in at least one of the main ram and the auxiliary ram. The motor-driven powder molding machine further includes a controller for controlling operation speeds of the upper and lower molds by at least one of the main ram and the auxiliary ram so that the pressure falls within a predetermined range based on the detected pressure.

In a press machine having a die cushion device which supports a cushion pad and which generates a die cushion force when a slide of the press machine is lowered, the wrinkle generation detection device includes: a slide position detector which detects a height position of the slide; a cushion pad position detector which detects a height position of the cushion pad; and a computing unit which consecutively calculates a deviation between the height position of the slide detected by the slide position detector and the height position of the cushion pad detected by the cushion pad position detector, during a time period from the start of forming of a material by the slide lowering to the end of the forming, wherein a wrinkle generated in the material is detected based on an increase of the deviation consecutively calculated by the computing unit.

A press and a process for operating it, has an upper tool and a lower tool for shaping a workpiece and a work unit including a press drive and/or a drawing device, is controllable by a controller, to perform the shaping process. The controller outputs, to the work unit, press process values, which define the sequence of events of the shaping process. Workpiece parameters characterize, for example, the material and/or the shape and/or at least one dimension and/or quality of the workpiece, which still has to be shaped or has already been shaped. The controller is assigned a composition matrix which contains, for each defined workpiece parameter and for each defined press process value, an individually changeable function, to describe the relationship between every one of the defined workpiece parameters and the defined press process values. This composition matrix allows a quick and rapid adjustment and adaptation of the press.

A press and a process for operating it, has an upper tool and a lower tool for shaping a workpiece and a work unit including a press drive and/or a drawing device, is controllable by a controller, to perform the shaping process. The controller outputs, to the work unit, press process values, which define the sequence of events of the shaping process. Workpiece parameters characterize, for example, the material and/or the shape and/or at least one dimension and/or quality of the workpiece, which still has to be shaped or has already been shaped. The controller is assigned a composition matrix which contains, for each defined workpiece parameter and for each defined press process value, an individually changeable function, to describe the relationship between every one of the defined workpiece parameters and the defined press process values. This composition matrix allows a quick and rapid adjustment and adaptation of the press.