Abstract:
Provided is a low-cost control device for an electric servo press, which is excellent in operability and operation efficiency, capable of abruptly stopping a servomotor in a safe and reliable manner within a short time period in response to an abrupt stop command while avoiding hard actuation of a mechanical brake, even in the case of runaway of the servomotor or the like. An electric servo press performs switching to rotation stop control for a servomotor according to an abrupt stop motion based on an abrupt stop command signal to perform brake actuation to cause a mechanical brake to actually start braking and to forcibly interrupt rotational drive power to the servomotor at a scheduled stop time at which the servomotor is stopped according to the abrupt stop motion.
Abstract:
A press with a press lock includes a press frame, a press ram slidably connected with the press frame, a rack fixedly connected with the frame, a pinion block connected with the ram, a pinion actuator operatively interconnected between the ram and the pinion block, and a control operatively connected with the pinion actuator. The press frame defines a stroke length and the press ram slides along the stroke length. The rack also extends along the stroke length, and the pinion block slides generally perpendicular to the stroke length, between open and closed positions of the press lock. The pinion block is also substantially fixed with the ram, relative to movement in a direction along the stroke length. The pinion block further engages the rack in the closed position, fixing the ram at a predetermined location along the stroke length, and disengages the rack in the open position, not inhibiting sliding of the ram along the stroke length. Finally, the pinion actuator slides the pinion block between the open and closed positions.
Abstract:
A press with a press lock includes a press frame, a press ram slidably connected with the press frame, a rack fixedly connected with the frame, a pinion block connected with the ram, a pinion actuator operatively interconnected between the ram and the pinion block, and a control operatively connected with the pinion actuator. The press frame defines a stroke length and the press ram slides along the stroke length. The rack also extends along the stroke length, and the pinion block slides generally perpendicular to the stroke length, between open and closed positions of the press lock. The pinion block is also substantially fixed with the ram, relative to movement in a direction along the stroke length. The pinion block further engages the rack in the closed position, fixing the ram at a predetermined location along the stroke length, and disengages the rack in the open position, not inhibiting sliding of the ram along the stroke length. Finally, the pinion actuator slides the pinion block between the open and closed positions.
Abstract:
In a ram locking device for securing the ram of a chipless forming machine, more particularly a heavy press, wherein the tool-carrying ram, movable up and down in the press frame relative to the bed of the press, is supported by the head of an axially adjustable tension rod, the unlocking, more particularly the release of the tension rod, is improved if the tension rod is statically cushioned and is automatically pressure-relieved as the release begins.
Abstract:
A method of installing a slide locking mechanism in a press mechanism so as to lock a press slide of the press mechanism in any of a plurality of positions. The press mechanism includes a gear train mounted in a housing. An installable slide locking mechanism, which includes a gear reducer and a locking gear, is mounted adjacent an opening made in the gear train housing. The gear reducer meshes with an input gear of the gear train, thereby preventing rotation of the gear train when the locking gear is moved to a locking position with respect to the gear reducer.
Abstract:
A balancing device for a press of the type in which a slide moves up and down with respect to a bolster, the balancing device having an upward urging device mounted on the press and engageable with the slide to urge the slide upwardly when the die height clearance is adjusted and to be disengageable from the slide when the slide is moving up and down during operation of the press.
Abstract:
Provided are an attachment pressing apparatus and a method of manufacturing a display device using the attachment pressing apparatus. The attachment pressing apparatus includes a body portion that is tubular and extends in a first direction, a wing portion connected to a side of the body portion in the first direction and extending in a second direction intersecting the first direction, a pressing portion penetrating the wing portion in an inner space of the body portion in the first direction and pressing an attachment, and a compression portion connecting another side of the body portion in the first direction and the pressing portion.
Abstract:
Provided is a low-cost control device for an electric servo press, which is excellent in operability and operation efficiency, capable of abruptly stopping a servomotor in a safe and reliable manner within a short time period in response to an abrupt stop command while avoiding hard actuation of a mechanical brake, reliably and quickly stopping the servomotor even in the case where runaway of the servomotor or the like occurs. An electric servo press performs switching to rotation stop control for a servomotor according to an abrupt stop motion based on an abrupt stop command signal to perform brake actuation so as to cause a mechanical brake to actually start braking and to forcibly interrupt rotational drive power to the servomotor at a scheduled stop time at which the servomotor is stopped according to the abrupt stop motion. As a result, even if an abrupt stop request is issued in the case where runaway or the like occurs due to abnormality of the servomotor, a control system therefor, or the like, the rotation of the servomotor may be reliably and quickly stopped.