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AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsRalf Warnemunde, Dirk Berndt
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The invention describes a method and a device for determining the three-dimensional geometry of a bent extruded section which is held in a feed and fixing unit in the region along a first rectilinear center axis (A) of the extruded section and is bent through a predeterminable bending angle a by means of a bending device, in such a manner that the region of the first rectilinear center axis (A) adjoins one side of a bent region of the extruded section which has been produced by the bending operation and a region having a second rectilinear center (B) adjoins the opposite side. The invention also describes a corresponding bending device. The invention is distinguished by the fact that the three-dimensional position of the second rectilinear center axis (B) is determined relative to the known three-dimensional position of the first rectilinear center axis (A) of the extruded section, while the extruded section is being held in a three-dimensional fixed position by the feed and fixing unit and the bent region of the extruded section is being released by the bending device, and that the bending angle α is determined by forming a section between the two axes (A) and (B).
A method for determining the three-dimensional geometry of a bent extruded section which is held in a feed and fixing unit in the region along a first rectilinear center axis (A) of the extruded section and is bent through a predeterminable bending angle α by means of a bending device, in such a manner that the region of the first rectilinear center axis (A) adjoins one side of a bent region of the extruded section which has been produced by the bending operation and a region having a second rectilinear center axis (B) adjoins the opposite side, wherein the three-dimensional position of the second rectilinear center axis (B) is determined relative to the known three-dimensional position of the first rectilinear center axis (A) of the extruded section, while the extruded section is being held in a three-dimensional fixed position by the feed and fixing unit and the bent region of the extruded section is being released from the bending device, and wherein the bending angle α is determined by forming a section between the two axes (A) and (B).
A device for bending an extruded section, having a feed and fixing unit, by means of which the extruded section can be supplied as a rectilinear product sold by the metre and can be fixed in place, and having a bending device, which is arranged downstream of the feed and fixing unit, as seen in the feed direction, along a rectilinear center axis (A) of the extruded section, this bending device having a bending head, which comprises at least two bending bodies which, during the bending operation, at least partially surround the extruded section which is to be bent, with the local application of force, and can be transferred into an open position which releases the extruded section, wherein a measurement sensor which is in a fixed three-dimensional relationship with respect to the feed and fixing unit and/or with respect to the bending device is provided, this sensor recording the three-dimensional position of a rectilinear center axis (B) of the extruded section in the region which directly follows the bending device, as seen in the feed direction of the extruded section, and wherein a storage and evaluation unit is provided, in which measured values for the measurement sensor can be stored and evaluated in such a manner that it is possible to determine an angle α, known as the bending angle, which is included by the center axes (A) and (B).
Dependencies are inferred from the claim text.