Abstract: An element attachable to a sheet metal part by riveting, in particular an element in the form of a centering bolt, having a shaft part and a head part, wherein the head part has at its side confronting the sheet metal part an at least approximately ring-like ring recess which merges at the radially inner side into a cylinder section of the head part which in turn merges into the shaft part and into a tubular rivet section which surrounds the shaft part in the region of the head part, is disposed within a ring-like contact surface arranged radially outside of the ring recess and merges at the radially outer side via an at least approximately conical wall into the ring-like contact surface, is characterized in that at least one local recess and preferably a plurality of in particular uniformly distributed local recesses is or are provided in the conical wall of the ring recess and/or in an optionally present ring-like base surface of the ring recess.

Abstract: The invention relates to a method for producing hollow bodies (11, 211, 411) such as nut elements to be fastened to components (13, 213, 413) that usually consist of sheet metal. The invention especially relates to a method for producing hollow bodies with an at least substantially square or rectangular outline by cutting individual bodies from a profile (10, 210, 410) in the form of a profile rod or a reel after respective holes (98, 298, 498) have been punched into the profile, and optionally afterwards producing a threaded cylinder (110, 310, 510). The inventive method is further characterized in that before or after the punching of the profile a passage treatment is carried our in order to produce a cylindrical or annular projection (36, 236, 436), concentric to the punching or the intended punching, on the side (12, 212, 412) of the profile facing the component by flow of material. The projection is optionally shaped to an annular punched section in an additional molding cycle.

Abstract: The invention relates to a method for creating an electrically conductive connection between an electric terminal device having a cavity, such as a cable shoe, and a sheet metal part. According to said method, a hollow fixing element is riveted to the sheet metal part to prevent torsion, thus producing an electrically conductive connection between the fixing element and the sheet metal part and the assembled component is then provided with an electrically non-conductive or poorly conductive protective coating, such as for example a lacquer coating or powder coating.

Abstract: A section (10; 110) is provided for the manufacture of hollow body elements, in particular for the manufacture of pierce and rivet nuts having a square or rectangular outline in plan view and a ring-like piercing section (36; 236) at a side confronting a component consisting of a sheet metal material or the like. The section (10; 210) is at least substantially rectangular in cross-section with two bars (14, 16; 214, 216) at the side (12; 212) later confronting the component. The bars are spaced apart and extend parallel to the longitudinal sides (18, 20; 218, 220) of the section, are likewise at least substantially rectangular in cross-section and form, in the finished element (11, 211), a feature providing security against rotation. The bars respectively each have an inclined flank (68, 70; 268, 270) at the inner side which forms an undercut (69, 71; 269, 271).

Abstract: A section (10; 110) is provided for the manufacture of hollow body elements, in particular for the manufacture of pierce and rivet nuts having a square or rectangular outline in plan view and a ring-like piercing section (36; 236) at a side confronting a component consisting of a sheet metal material or the like. The section (10; 210) is at least substantially rectangular in cross-section with two bars (14, 16; 214, 216) at the side (12; 212) later confronting the component. The bars are spaced apart and extend parallel to the longitudinal sides (18, 20; 218, 220) of the section, are likewise at least substantially rectangular in cross-section and form, in the finished element (11, 211), a feature providing security against rotation. The bars respectively each have an inclined flank (68, 70; 268, 270) at the inner side which forms an undercut (69, 71; 269, 271).

Abstract: A fixing element comprising a fixing section and a tubular stamped or riveted section in which the stamped or riveted section enable the fixing element to be placed on a metal part and the fixing section enables an object to be placed on the metal part. A bearing surface on a transition region between the fixing section and the stamped or riveted section extends in a radial or conical manner and optionally has torsional fixing features. The tubular stamped or riveted section free front end has a conical cutting surface which is divergent on the radially inner side in the direction of the free front end area and a rounded impact and traction surface on the radially outer side. The cutting, impact and traction surfaces meet at an annular edge on the free front end of the stamped or riveted section and are shaped to prevent shavings from occurring.

Abstract: A method and an apparatus for the attachment to a component, for example a sheet metal part, of a fastener element comprising a head part and a tubular rivet section which is disposed concentric to an axis of symmetry of the fastener element and merges via a contact surface extending in a radial direction into the head part, wherein the rivet section is passed through the hole in the sheet metal part and the rivet section is beaded over, whereby the component is clamped in the region of the hole between the contact surface and the beaded over rivet section, are wherein the component is arranged above a riveting die button and the rivet section is pressed through the component and subsequently beaded over by the exertion of a local force on the head part of the fastener element, the local force moving in circles around the central axis of symmetry, or by exerting such a force on the die button, while simultaneously carrying out a relative axial feed movement between the tool exerting the force and the die butt

Abstract: A method and an apparatus for the attachment of a fastener element to a component, for example a sheet metal part, wherein the fastener element has an axis of symmetry, a head part having a contact surface which enters into contact with the component, a fastening section having a thread and also at least one undercut which receives the material of the component, and wherein the material of the component is pressed against the contact surface and into the undercut by means of a first tool having a die button shape matching the design of the fastener element, are characterized in that a local force is exerted on the head part of the fastener element or onto the tool to the side of the axis of symmetry and is moved circularly around the axis of symmetry while simultaneously carrying out a relative feed movement between the tool and the fastener element between which the component is arranged in order to press the material of the component into the undercut.

Abstract: A method of attaching a functional element (10, 210), in particular a fastener element to a sheet metal part (12, 212), optionally in liquid and/or gas-tight manner, is characterized in that the functional element (10, 210, 410) is pressed against the sheet metal part (12, 210, 410) supported by a die (14, 114, 214, 414) and sheet metal material (13) is pressed by means of at least one movably mounted shaped part (16, 116, 216, 416) of the die (14, 114, 214, 414) into an undercut (18, 218, 418) of the functional element (10, 210, 410). The disclosure also claims a die, a functional element, and a component assembly comprising the functional element and a sheet metal part.

Abstract: A method of manufacturing hollow body elements such as nut elements for the attachment to components consisting normally of sheet metal, in particular to the manufacture of hollow body elements with an at least substantially square or rectangular outer periphery by cutting individual elements by length from a section present in the form of a bar section or a coil after prior punching of apertures in the section, optionally with subsequent formation of a thread cylinder, utilizing a progressive tool having a plurality of working stations in which respective processes are carried out is characterized in that in each working station two respective operations are carried out for the section, or for each of a plurality of sections arranged alongside one another, for each stroke of the progressive tool at the same time. A hollow body element and also a progressive tool are also claimed.

Abstract: A method of attaching a functional element (10, 210), in particular a fastener element to a sheet metal part (12, 212), optionally in liquid and/or gas-tight manner, is characterized in that the functional element (10, 210, 410) is pressed against the sheet metal part (12, 210, 410) supported by a die (14, 114, 214, 414) and sheet metal material (13) is pressed by means of at least one movably mounted shaped part (16, 116, 216, 416) of the die (14, 114, 214, 414) into an undercut (18, 218, 418) of the functional element (10, 210, 410). The disclosure also claims a die, a functional element, and a component assembly comprising the functional element and a sheet metal part.

Abstract: The invention relates to a fixing element (700) comprising a fixing section (702) and a tubular stamped and/or riveted section (704). The stamped and/or riveted section is embodied in such a way as to enable the fixing element to be placed on a metal part and the fixing section is embodied in such a way as to enable an object to be placed on the metal part. A bearing surface (708) is provided in the region of the transition between the fixing section and the stamped and/or riveted section, extending in a radial and/or conical manner, said bearing surface optionally exhibiting torsional fixing features (701, 702) and the free front end area (714) of the tubular stamped and/or riveted section is provided with a conical cutting surface (716) which is divergent on the radially inner side in the direction of the free front end area and a rounded impact and traction surface (718) on the radially outer side.

Abstract: A method for the application of a function element (10, 101) to a mouldable metal piece (12) using a high pressure moulding process, whereby the metal piece (12) is put under load by means of a fluid pressure on the side away from the supported function element (10, 101) and moulded in a moulding process around at least one section of the function element in the region of a radially inward running surface of the function element, facing away from the front face (18) of the function element (10, 101) in contact with the metal piece, to give an annular rabbet running radially inwards with an annular form, the function element being supported throughout said process. Said method is characterised in that during a second phase of the moulding process the annular rabbet is pressed flat between a moulding surface of a die and the surface of the function element running radially inwards. The invention further relates to an assembled component produced by means of said method and a die used to carry out said method.

Abstract: A functional element arrangement which includes a functional element which is to be mounted on a component, especially but not exclusively on a brittle or non-rigid component made of a material containing cavities or pores, e.g. plastic, wood, metal foams, plastic or metal filled with hollow bodies, or another relatively soft material, selectively embodied as a sandwich construction or as a composite material e.g. in the form of a single layered or multilayered structure comprising, for example, two layers of sheet metal or plastic and a core made of one of the above-mentioned materials. The invention is characterized in that it is provided with an auxiliary assembly element which enables the functional element to be blocked using forming techniques when it is mounted on the component in a riveting process or a stamping and riveting process.

Abstract: A section (10; 110) is provided for the manufacture of hollow body elements, in particular for the manufacture of pierce and rivet nuts having a square or rectangular outline in plan view and a ring-like piercing section (36; 236) at a side confronting a component consisting of a sheet metal material or the like. The section (10; 210) is at least substantially rectangular in cross-section with two bars (14, 16; 214, 216) at the side (12; 212) later confronting the component. The bars are spaced apart and extend parallel to the longitudinal sides (18, 20; 218, 220) of the section, are likewise at least substantially rectangular in cross-section and form, in the finished element (11, 211), a feature providing security against rotation. The bars respectively each have an inclined flank (68, 70; 268, 270) at the inner side which forms an undercut (69, 71; 269, 271).

Abstract: A method of attaching a pin-like element (10) for example a centering pin or a bolt element in a component (20), for example in the form of a plate or of a wall section of a housing, wherein the pin-like element (10) has a head part (12) with a larger transverse dimension and an end face (14) as well as a shaft part (16) with a smaller transverse dimension and wherein the head part merges via an at least generally radially extending contact surface (30) into the shaft part (16), is characterized in that an element (10) is selected having an axial length of the head part which is significantly smaller than the thickness of the component (20) at the point of attachment of the pin-like element, in that a stepped bore (22) is produced in the component having a first region (24) of larger diameter which receives the head part (12) of the element and a second region (26) which receives the shaft part (16) and has a diameter which is of the same size as or fractionally smaller than the diameter of this shaft part, w

Abstract: The invention relates to a method for producing hollow bodies such as nut elements to be fastened to components that usually consist of sheet metal. The invention especially relates to a method for producing hollow bodies with an at least substantially square or rectangular outline by cutting individual bodies from a profile in the form of a profile rod or a reel after respective holes have been punched into the profile, and optionally afterwards producing a threaded cylinder. The inventive method is further characterized in that before or after the punching of the profile a passage treatment is carried out in order to produce a cylindrical or annular projection, concentric to the punching or the intended punching, on the side of the profile facing the component by flow of material. The projection is optionally shaped to an annular punched section in an additional molding cycle. The invention further relates to various hollow bodies, assembly units and molds for producing said hollow bodies.

Abstract: A device and process for the surface machining of workpieces with convex surfaces, the device including an abrasive belt, abrasive belt clamping devices, an abrasive belt tensioning device, and clamping tongs device with two clamping arms, one of which is rotatable relative to the other. A section of unused abrasive belt is drawn from a supply roll for the abrasive belt and a corresponding section of used abrasive belt is wound onto a wind-up roll for the abrasive belt so that machining proceeds with a new section of abrasive belt.