摘要:
The invention relates to a rivet nut (10) with a base part (12) and a cylindrical rivet section (14), the base part having a central threaded cylinder (16), an annular contact surface (18) that is coaxial to the threaded cylinder in a plane (20) perpendicular to the longitudinal axis (22) of the threaded cylinder, and that has an axially aligned annular groove (24), said groove being arranged radially inside the annular contact surface and radially outside the cylindrical rivet section and said groove blending, on the radially inner side, into the outer surface of the cylindrical rivet section, and antirotation ribs (42) being provided in the area of the annular groove. The invention is characterized in that the annular groove, when seen in an axial cross-sectional plane, has a U-shaped cross-section with a radially outer lateral wall (30) which is relatively steep and which has, at the steepest point (33), an inclination to the center longitudinal axis of the rivet nut in the range of approximately 45° to approximately −20°, preferably of approximately 30° to approximately 0°. The volume of the annular groove is chosen in such a manner that across a range of sheet thicknesses adapted to the respective thread size there is room for the volume of the respective folded region of the rivet section inside the annular recess (80) that is formed by molding the sheet part (60) into the annular groove of the element and that it does not project beyond the side (82) of the molded sheet facing away from the annular contact surface.
摘要:
The invention relates to a function carrier having a functional element and a rivet sleeve. The function carrier can be inserted into a plate having a hole with an internal diameter in the plate. A head part has an external diameter corresponding to the hole internal diameter. The element has a shaft part having an axial direction and a rounded concave fillet in a region between the shaft and head parts. The rivet sleeve has a deformable region adjacent the head part and a ring region remote from the head part and has an external diameter greater than the internal diameter. The rivet sleeve is axially movable along the shaft part and the tubular deformable region over the fillet to deform the tubular region radially outwardly to a maximum diameter greater than the external diameter to form a groove between the radially outwardly deformed region and the ring region.
摘要:
The invention relates to a method for producing hollow body elements (200), for example, nut elements which are applied to components which are normally made of steel (280), in particular, for producing hollow body elements having an essentially quadratic or rectangular external profile (202). Said method consists of cutting individual elements of a profile in the form of a profile rod (1) or a winding after holes (204) have previously been stamped in the profile, a threaded cylinder (206) is subsequently, optionally, formed using a follow-on composite tool (10) which consists of several working stations. The invention is characterized in that a penetrating process and a punching process are carried out in the working station. The invention also relates to hollow body elements (200), components, follow-on composite tools (10) and rolling mills (600, 602).
摘要:
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, wherein the first region (24) of the stepped bore has a depth, which is somewhat greater than a longitudinal dimension of the head part (12) from the end face (14) to the contact surface (30) and in that at least one notch (36) is introduced by material deformation in the edge region of the component around the opening of the region (24) of the stepped bore (22) of larger diameter which leads to a displacement of material of the component over the end face of the element at least one point (38) and in this way secures the element (10) in the component (20) in the axial direction.
摘要:
The invention relates to a rivet element, in particular for attachment to components of fiber composite materials, having a rivet section which is formed at least regionally as a spike which tapers in the direction towards a tip and which can be dilated by means of a die button.
摘要:
The invention relates to a rivet element, in particular for attachment to components of fiber composite materials, having a rivet section which is formed at least regionally as a spike which tapers in the direction towards a tip and which can be dilated by means of a die button.
摘要:
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.
摘要:
Disclosed are a method and a device for mounting a fastening element (12) to a part (13), e.g. a sheet metal part, said fastening element comprising a head piece (14) with a tubular rivet section (16) which is disposed concentric to an axis of symmetry (18) of the fastening element (12) or a fastening section (20) of the fastening element (12) and extends into the head piece via a radially extending contact surface (22). The rivet section (16) is guided through the part (12) so as to form a hole in said part, and the rivet section (12) is flanged such that the part is clamped between the contact surface and the flanged rivet section in the area of the hole. The inventive method and device are characterized in that the part is placed above a rivet matrix, and the rivet section is pressed through the part and is then flanged by applying a local force to the head piece of the fastening element, said force moving in circles about the central axis of symmetry, or by applying such a force to the matrix while performing a relative axial advancing movement between the tool applying said force and the matrix.
摘要:
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.
摘要:
A spacer element which is designed at both ends for the attachment to a sheet metal part or to a hollow section for the formation of a component assembly and which optionally has a fastener section with an internal thread or external thread for the attachment of a component to the component assembly by means of a screw or a nut, is characterized in that the spacer element is not deformable or at least substantially not deformable on attachment to the sheet metal part or to the hollow section and in that the spacer element is provided at both end faces with respective undercuts for the form-fitted reception of sheet metal material or of the wall material, whereby the spacer element is secured to the sheet metal part or to the hollow section and preferably also secured against, rotation. Various variants, component assemblies and methods are likewise described and claimed.