A readjustment device and a method for a machine tool process plate-shaped workpieces. The readjustment device contains an upper pressure-exerting device, which at least contains pressure plungers which are oriented at a spacing to one another, and a lower supporting device, which at least has counter-bearings which are arranged at a spacing to one another and which, in a working position, are oriented so as to fix the plate-like workpiece in a clamping manner with respect to the pressure plungers of the upper pressure-exerting device. The pressure plungers of the upper pressure-exerting device can be transferred from a rest position to the working position by a drive device. The pressure plungers of the upper pressure-exerting device are being coupled to one another and are controlled so as to be movable or pivotable together between the rest position and the working position.

Device for clamping and/or braking an object to be clamped and/or braked, comprising a housing; a spring arranged in the housing comprising a first and a second annular spring plate, wherein the annular spring plates are clamped in the housing between first and second contact surfaces of the housing; at least one clamping element having a clamping surface which is designed to transmit a clamping and/or braking force to the object; wherein the spring plates are arranged within the housing in such a way that at least one pressure space is formed, which can be ventilated or vented, wherein by ventilating or venting the pressure space, a bending of at least one of the spring plates can be changed and thereby the device changes between an open state and a closed state; wherein the device further comprises at least one insert plate, which is arranged between the spring plates.

A work-holding device comprising a housing, at least one pin, a cover, and a flow regulation mechanism. The housing further comprising at least one chamber, the chambers having a first end, a second end, a fluid opening at the first end, and a pin opening at the second end. The pins having an actuating end and a base end. The pins are arranged in the chambers with the base end within the chamber and the actuating end extending through the pin opening. The flow regulation mechanism is attached to the cover and configured to regulate fluid flow into and out of the chambers.

This disclosure describes a clamping and/or braking device for clamping and/or braking an object to be clamped and/or braked, comprising: a housing comprising a first housing part and a second housing part, wherein each of the housing parts comprises an annular recess, which defines a first contact surface of the housing part and a second contact surface of the housing part, and wherein the two housing parts are arranged relative to one another and fastened to one another in such a way that the recesses of the first and second housing parts together form an inner space within the housing; a spring arranged in the inner space comprising a first annular spring plate and a second annular spring plate, wherein the first annular spring plate is clamped in the annular recess of the first housing part between the first contact surface and the second contact surface of the first housing part, and wherein the second annular spring plate is clamped in the annular recess of the second housing part between the first contact surface and the second contact surface of the second housing part; at least one clamping element, wherein each clamping element has a clamping surface which is designed, when a first end of one of the spring plates is supported on the first contact surface of one of the housing parts and a second end of the one of the spring plates presses on the second contact surface of the one of the housing parts, to transmit a clamping and/or braking force to the object to be clamped and/or braked; wherein the spring plates are arranged within the inner space in such a way that in the inner space at least one pressure space is formed, which is at least partially delimited by the spring plates, wherein the pressure space can be ventilated or vented and can be acted upon by positive pressure of a pressure medium which can be supplied to the housing, wherein the spring plates are arranged relative to the at least one pressure space in such a way that by ventilating or venting the pressure space or acting upon the pressure space with positive pressure, a bending of at least one of the spring plates can be changed and thereby the clamping and/or braking device changes between an open state, in which the at least one clamping surface is spaced apart from the object, and a closed state, in which one or more of the at least one clamping surfaces transmit a clamping and/or braking force to the object; wherein the clamping and/or braking device further comprises at least one insert plate, which is arranged between the first spring plate and the second spring plate in the inner space.

A gripping device for a segment erector is provided, including a drive assembly, a cylinder barrel assembly, a piston, a guide assembly and a centering assembly. The centering assembly includes a centering main structure, cameras and a drive component. The centering main structure includes an end cover, an assembly frame, a bottom cover, and a plurality of claw plates and claw arms. The end cover is fixedly connected to a gripping and lifting plate and the bottom cover. Each of the claw plates is connected to the centering main structure via a matching claw arm. The cameras are mounted on the assembly frame and arranged to face the claw plates. In the process of a gripping head approaching a segment, a relative positional relationship between the gripping head and the segment is identified based on images captured by the cameras. The drive component drives the assembly frame.