A method for producing a component element for a furniture fitting, in particular a rail, includes the following steps to be carried out in chronological order: providing a planar sheet having a longitudinal extension, two top surfaces and two side surfaces spaced apart by a width of the sheet, as a semifinished product of the component element. The sheet has a wall thickness in the range of 0.5 mm and 1.5 mm, and is formed, preferably by an embossing stamp and/or an embossing roller, on at least one top surface with an indentation. The indentation is arranged transversely, preferably substantially orthogonally, to the longitudinal extension. The sheet is bent such that, in a cross section orthogonal to the longitudinal extension, a profile of the component element arises, and the bent sheet is mechanically separated in the region of the indentation.

During the roll-forming of a plate bar section (11) to a profile (12, 13) with variable width and upright sides (22,23) with (FIG. 1) or without (FIG. 2) flanges (24, 25), the upright sides (22, 23) are clamped in one of the last three forming stations (FIG. 12). This can yield a product with a plane bottom so that the product is not bent up (FIG. 8) or down (FIG. 10), which happens without the above-cited clamping (FIG. 13) of the upright sides (22, 23).

During the roll-forming of a plate bar section (11) to a profile (12, 13) with variable width and upright sides (22,23) with (FIG. 1) or without (FIG. 2) flanges (24, 25), the upright sides (22, 23) are clamped in one of the last three forming stations (FIG. 12). This can yield a product with a plane bottom so that the product is not bent up (FIG. 8) or down (FIG. 10), which happens without the above-cited clamping (FIG. 13) of the upright sides (22, 23).

A method can be used to produce a component from a sandwich material in sheet or strip form, which sandwich material comprises at least two metallic surface layers and a plastic layer disposed between the metallic surface layers. The method may involve at least partially heating the sandwich material along an edge region to soften the plastic in the edge region. The plastic may then be substantially completely displaced out of the edge region by exerting a force on at least one of the metallic surface layers. In this way a plastic-free edge region is produced in which the metallic surface layers are in contact in sub-regions or at points. Further, a component comprised of a sandwich material may include at least two metallic surface layers and a plastic layer disposed between the metallic surface layers. The sandwich material may have, at least along one edge, a plastic-free region in which the metallic surface layers are in contact in sub-regions or at points.

A method can be used to produce a component from a sandwich material in sheet or strip form, which sandwich material comprises at least two metallic surface layers and a plastic layer disposed between the metallic surface layers. The method may involve at least partially heating the sandwich material along an edge region to soften the plastic in the edge region. The plastic may then be substantially completely displaced out of the edge region by exerting a force on at least one of the metallic surface layers. In this way a plastic-free edge region is produced in which the metallic surface layers are in contact in sub-regions or at points. Further, a component comprised of a sandwich material may include at least two metallic surface layers and a plastic layer disposed between the metallic surface layers. The sandwich material may have, at least along one edge, a plastic-free region in which the metallic surface layers are in contact in sub-regions or at points.

A method and an installation for continuously shaping longitudinally slotted pipes from a flat material minimizes or avoids markings in the material by evenly introducing into the roll stand the rolling forces of at least two rolls acting successively on the flat material and/or by allowing the two successively acting rolls to align freely relative to one another.

A method and an installation for continuously shaping longitudinally slotted pipes from a flat material minimizes or avoids markings in the material by evenly introducing into the roll stand the rolling forces of at least two rolls acting successively on the flat material and/or by allowing the two successively acting rolls to align freely relative to one another.

A roll-forming machine having: an entrance end section in which a sheet of material with various sides and widths generally enters, wherein the sheet of material is configured to form a finished sheet component having a predetermined width with ends that meet or overlap; an exit end section where the finished sheet component exits; a lifting bar assembly for lifting an end segment of the material to cause a longitudinal bend in the material; a side roller bar assembly that is configured to form an upper end of said sheet component; a creasing bearing assembly that assists in a creasing of the sheet of material; and wherein said lifting bar implement is configured to at least one of, move the creasing bearing assembly and the side roller bar assembly, to a predetermined position to form a finished sheet component having a predetermined width.

To a fulcrum roll unit portion in a workpiece, a corresponding initial curvature radius is applied, and to a bending roll unit portion in a workpiece, a corresponding design curvature radius is applied. To an intermediate unit portion in a workpiece, an intermediate curvature radius set so as to continuously change from the initial curvature radius to the design curvature radius is applied. At least one of the fulcrum roll and the bending roll is moved on the basis of an integrated value obtained by integrating the amount of change in bending position in each of the intermediate unit portion and the bending roll unit portion.

To a fulcrum roll unit portion in a workpiece, a corresponding initial curvature radius is applied, and to a bending roll unit portion in a workpiece, a corresponding design curvature radius is applied. To an intermediate unit portion in a workpiece, an intermediate curvature radius set so as to continuously change from the initial curvature radius to the design curvature radius is applied. At least one of the fulcrum roll and the bending roll is moved on the basis of an integrated value obtained by integrating the amount of change in bending position in each of the intermediate unit portion and the bending roll unit portion.