A press machine includes a controller including a displacement calculator being adapted to calculate a slide displacement with a slide being kept at a waiting position displaced from a top dead center by an amount corresponding to a predetermined crank angle based on a measured value of a pre-adjustment die height provided for a height adjustment of the slide, a desired value of a post-adjustment die height, the crank angle, a distance between an upper surface of a bolster and a crank center of an eccentric portion, a crank radius of the eccentric portion, and a distance between a lower surface of the slide and a point center, thereby associating the slide displacement with a difference between the pre-adjustment die height and the post-adjustment die height.

A slide motion control apparatus for a mechanical press comprising: a slide which is disposed so as to be relatively vertically movable with respect to a driven body to which a drive force is transmitted through a con rod of the mechanical press; a relative position commander that outputs a relative position command indicating a relative position of the slide with respect to the driven body; a relative position detector that detects a relative position of the slide with respect to the driven body, and outputs a relative position detecting signal indicating the detected relative position; a servomotor; a drive mechanism that relatively moves the slide with respect to the driven body by a drive force of the servomotor; and a controller that controls the servomotor based on a relative position command signal output from the relative position commander, and the relative position detecting signal output from the relative position detector.

A slide motion control apparatus for a mechanical press comprising: a slide which is disposed so as to be relatively vertically movable with respect to a driven body to which a drive force is transmitted through a con rod of the mechanical press; a relative position commander that outputs a relative position command indicating a relative position of the slide with respect to the driven body; a relative position detector that detects a relative position of the slide with respect to the driven body, and outputs a relative position detecting signal indicating the detected relative position; a servomotor; a drive mechanism that relatively moves the slide with respect to the driven body by a drive force of the servomotor; and a controller that controls the servomotor based on a relative position command signal output from the relative position commander, and the relative position detecting signal output from the relative position detector.

A press machine includes a press frame, a crankshaft having a first eccentric portion, at least one crankshaft motor connected to the crankshaft, a ram, an upper tool section supported by the ram and a lower tool section fixedly attached to the press frame, a linkage type ram drive mechanism connected to the crankshaft and including at least one pivot support pin, and a ram adjustment mechanism including a pivot support member supporting the at least one pivot support pin. Wherein the at least one secondary ram drive link is pivotally connected at a first end to the at least one pivot support pin and at a second end to a first end of the at least one main ram drive link. The at least one main ram drive link is pivotally connected at a second end to the ram. The at least one ram drive connecting link is rotatably supported by the at least one first eccentric portion of the crankshaft at a first end and pivotally connected at a second end to the at least one main ram drive link at a point between the first and second ends of the at least one main ram drive link.

A press machine includes a press frame having first and second portions, a crankshaft, a crankshaft, a ram, a ram drive mechanism supported by the first portion of the press frame at a primary force application location, a ram guide linearly guiding the ram, and supported by the second portion of the press frame at a ram guide location; and a working tool including an upper tool section and a lower tool section configured for the processing of a workpiece. The upper tool section is fixedly attached to the ram and the lower tool section is fixedly attached to the press frame at a lower tool location. The primary force application location has a first working position during the processing of the workpiece, and a second resting position when the workpiece is not being processed. The ram guide location has a first working position during the processing of the workpiece, and a second resting position when the workpiece is not being processed. The difference between the working position and the resting position of the ram guide location is less than the difference between the working position and the resting position of the primary force application location.

A press-molding system 1 includes a press-molding unit 2 having a main body 21, a lower molding die 23 installed at the lower portion of the main body 21, a drive part 24 installed to the main body 21, and an upper molding die 26 installed so as to be vertically movable with respect to the lower molding die 23 by the drive part 24, a workpiece weight measuring unit 5 that measures the weight of a workpiece, and a controller 7 that controls the drive part 24 according to the weight of a workpiece measured by the workpiece weight measuring unit 5.

A clamshell die cutting press (10) that can transition between an opening of three inches and 0.937 and anywhere in between without the requirement of filler plates. This is accomplished by attaching the connecting rod or arm (20) that extends between the fixed platen (14) and the movable platen (16) to the fixed platen through an eccentric bevel gear (26). The bevel gear (26) is driven by an electric motor (28) which allows the adjustment to be made with a push of a button, and by moving the bridge rocker plates (34 and 36) and bridge cam stands using linear slides and servo motors.

A press machine is provided with a bottom dead center position correction control section, a selected lower bottom dead center position setting section, and a bottom dead center position switching section. The bottom dead center position correction control section is configured to perform, based on the selected bottom dead center position after the switching and the detected bottom dead center position, positional correction so that the actual bottom dead center position of the slide is adjusted to the selected bottom dead center position.

A battery formation system, comprising a first pressing platform, a second pressing platform, and a press assembly configured to move the first pressing platform towards the second pressing platform to apply a pressing force on an unfinished battery. The first pressing platform is coupled to the press assembly and rotatable relative to the second pressing platform. The battery formation system further comprises a pressure film sensor coupled to the pressing platform and configured to output pressure data corresponding to the pressing force, and a computer system in communication with the pressure film sensor. The computer system includes one or more computer processors configured to receive the pressure data from the pressure film sensor, determine, based on the pressure data, pressure information that is representative of the first pressing platform, and send instructions to adjust an angle of the first pressing platform based on the pressure information.