Abstract: A controller for an electric servo press includes: a press load sensor for detecting a pressure force of the slide; a pressure-force determination device for determining whether the pressure force of the slide reaches one or a plurality of different pressure-force setting values based on the one or the plurality of different pressure-force setting values and an output signal of the press load sensor, and for generating a pressure-force achievement signal each time the pressure force of the slide reaches each of the one or the plurality of different pressure-force setting values; a servo motor drive controller for controlling driving of the servo motor; and a motion command device. In response to the pressure-force achievement signal, switching of a drive control mode by the servo motor drive controller is switched, and/or a motion to be commanded by the motion command device is switched.

Abstract: Provided is a controller for an electric servo press for linearly driving a slide through an intermediation of a rotary-to-linear motion converting mechanism for rotating a decentering shaft by a rotational output of a servo motor to convert rotation of the decentering shaft into linear motion, to perform press working, including : a press load sensor for detecting a pressure force of the slide; a pressure-force determination device for determining whether the pressure force of the slide reaches one or a plurality of different pressure-force setting values based on the one or the plurality of different pressure-force setting values and an output signal of the press load sensor, and for generating a pressure-force achievement signal each time the pressure force of the slide reaches each of the one or the plurality of different pressure-force setting values; a servo motor drive controller for controlling driving of the servo motor; and a motion command device, in which: in respond to generation of the pressure-

Abstract: A press machine uses a crank mechanism which can perform pressing by a pressing force control when a slide exists in a pressing region. When the slide is determined to exist between an initial position and a switching position to the pressing region, the slide is moved down by rotating a motor regularly by a position control system. When the slide is determined to exist in the pressing region, pressing is performed by moving down the slide such that a slide pressing force becomes equal to a set slide pressing force by a pressing force control system.

Abstract: A press machine uses a crank mechanism which can perform pressing by a pressing force control when a slide exists in a pressing region. When the slide is determined to exist between an initial position and a switching position to the pressing region, the slide is moved down by rotating a motor regularly by a position control system. When the slide is determined to exist in the pressing region, pressing is performed by moving down the slide such that a slide pressing force becomes equal to a set slide pressing force by a pressing force control system.

Abstract: In a numerically-controlled machine tool having a tool magazine accommodating tools in the pots, display means capable of rewriting tool numbers in correspondence to the pots is provided, and the positions where the tool numbers are stored are successively shifted in a memory in response to instruction signals applied from the machine tool side in response to the selection or exchange of the tools, so that the display of the tool numbers of the tools in the magazine is changed in synchronization with the tool displacement.