A roller tool for a machine tool for the linear forming of a metal sheet comprises a housing, a tool head which for reversibly interacting with a ram of the machine tool is mounted so as to be rotatable relative to the housing about a tool longitudinal axis, having an impact face for transmitting a contact pressure force that is oriented so as to be parallel to the tool longitudinal axis from the ram to the tool head, and a rotary engagement for transmitting a rotating movement about the tool longitudinal axis from the ram to the tool head, and a roller installation for interacting with the metal sheet, having at least one roller body that is capable of being rotatingly driven by way of the tool head.

A method of manufacturing a perforated sheet which has at least one hole. The method includes introducing at least two spaced boreholes into a sheet, the at least two spaced boreholes being formed so that they each pass through a thickness of the sheet, introducing a continuous cut between the at least two spaced boreholes in the sheet, and bending open a section of the sheet which is adjacent to the continuous cut so as to form a hole.

A method for manufacturing an out plate for a refrigerator includes providing a steel plate with a protective film attached to a surface thereof; seating the steel plate on a die and forming one of the plurality of through holes by a vertical movement of a punch; and horizontally moving the steel plate to one of a plurality of set positions to form another one of the plurality of through holes in the steel plate by the vertical movement of the punch, wherein the out plate defines a front surface of a door of the refrigerator and includes a display part, wherein a plurality of through holes are formed therein, and a display assembly comprising a plurality of light emitting diodes (LEDs) that are configured to transmit light through the plurality of through holes configured to display information.

The invention relates to a method for operating a processing installation (1) including a first processing machine (2), the first processing machine (2) comprising at least one movable punch (5) for separating, preferably punching or punch broaching, a workpiece (8), the method comprising the following steps: contactlessly, preferably optically, detecting a contour of a cut surface produced on the workpiece (8) by the punch (5) by means of at least one sensor unit (12) mounted on the processing installation (1), wherein the detecting is performed in-line in the processing installation (1) and consequently without removing the workpiece (8) from the processing installation (1), and evaluating the condition of the cut surface on the basis of the data detected by the sensor unit (12).

A tool and method for processing plate-shaped workpieces, such as metal sheets. An upper tool and a lower tool are moved toward one another with a workpiece arranged in between. The upper tool carries a processing tool on a main body opposite a clamping shank. The lower tool has a main body and bearing surface for the workpiece with an opening in the bearing surface. The processing tool of the upper tool has a bending edge and the main body of the lower tool has a counterpart bending edge which is positioned in the opening of the bearing surface. The bearing surface being displaceable relative to the counterpart bending edge such that the counterpart bending edge projects from the opening in the bearing surface.

With a method for cutting a groove-shaped recess in a workpiece, a cutting tool for a machine tool is provided on a workpiece. The cutting tool is displaced into a cutting position, in which the cutting tool is in engagement with the workpiece. The cutting tool in engagement with the workpiece is displaced relative to the workpiece for cutting the groove-shaped recess. Upon cutting, a chip is produced with a predetermined maximum chip length that is less than a total length of the recess to be produced.

A method of manufacturing a perforated sheet which has at least one hole. The method includes introducing at least two spaced boreholes into a sheet, the at least two spaced boreholes being formed so that they each pass through a thickness of the sheet, introducing a continuous cut between the at least two spaced boreholes in the sheet, and bending open a section of the sheet which is adjacent to the continuous cut so as to form a hole.

A stamping apparatus includes a die, a punch, a back-pressure device, a lift-up mechanism, and a delay device. A workpiece is mounted on the die. The punch is arranged to approach and recede from the die and configured to punch out a product from the workpiece. The back-pressure device includes a pushing member disposed in the die and urges the pushing member toward the punch to apply back pressure to the workpiece. The lift-up mechanism is configured to lift the workpiece above the die when the punch recedes from the die. The delay device is configured to delay lifting movement of the pushing member in relation to receding movement of the punch when the punch recedes from the die.

The present invention provides a compact intelligent loading and unloading device of a numerical control turret punch press, comprising mounting frames, a palletizing platform, a mobile station, a feeding device, a lifting and reclaiming device and a central control module. The device can reduce the difficulty of a feeding device for clamping the sheet material through a clamp by lifting the sheet material with a certain angle at the front end of a mobile station. The device can also enhance the uniformity of the sheet material on a palletizing platform by arranging a limiting device on the palletizing platform, thereby reducing the probability of slippage of the sheet material on the palletizing platform.

The invention relates to machine tools and methods for processing plate-like workpieces. The machine tool comprises a first movement device for the movement of the workpiece in a first direction, two workpiece supporting surfaces spaced apart by a gap extending in a second direction and configured for supporting the workpiece, and a second movement device for the movement of a pressing tool in the second direction. The pressing tool comprises two tool components that are configured to move in a stroke direction relative to one another in order to process the workpiece in the gap by at least one of stamping and shaping. The machine tool also comprises at least one receiving device configured to move in the second direction one or more of in and along the gap for depositing at least one workpiece part formed when processing the workpiece by at least one of stamping and shaping.