Abstract:
A piercing nut element having a strength in the range between 700 and 900 MPa which is designed to be pressed into the sheet metal part. The nut element is characterized in that the self-piercing attachment of the nut element into a sheet metal part of higher strength, or into a sheet metal part with a thickness greater than 3.5 mm, the nut element is designed in such a way that the piercing section has a peripheral extending groove below the sheet metal contact surface and in that the piercing section has a piercing edge at its free end face with the piercing edge being spaced from the boundary of the groove adjacent to the piercing section by a peripheral surface having an axial height which corresponds to at least 30% and preferably to at least 50% of the sheet metal thickness, wherein the radial wall thickness of the piercing section in the region of its free end face from the outer side of the piercing section up to the nominal diameter of the thread corresponds to a thickness between 1.2 to 1.8 and preferably 1.5 times the intended sheet metal thickness.
Abstract:
A method for producing an assembly unit includes providing the assembly unit with an assembly part and at least one welding element serving for the thermal joining of the assembly part to a basic construction. The welding element is fixed in a through opening of the assembly part with at least one form-locking connection acting in the direction of the center longitudinal axis of the through opening and having a first end face, a second end face facing away from the first, and a peripheral surface that interconnects the end faces. The welding element has two side faces running parallel to each other and pointing away from each other, a profile that ensures the at least one form-locking connection and two transverse surfaces which connect the side faces one to the other.
Abstract:
A method for the attachment of a bolt element to a component is described. The bolt element has a head part having a contact surface and a shaft part extending away from the head part, the shaft part having a tip provided at its end remote from the head part, the tip merging into a thread cylinder, optionally via a cylindrical region. The bolt element is pressed with the tip to the fore against the component and the tip is pressed through the component until the side of the component adjacent the head part of the bolt element enters to contact the thread cylinder and the tip thereby generates a hole in the component. The bolt element is subsequently turned so that the thread of the thread cylinder forms an internal thread in the wall of the hole. A bolt element is also claimed.
Abstract:
The present invention was made with the object of eliminating the short pipe member when attaching a bolting nut to a hydroformed part, preventing an increase in the difficulty of hydroforming for attaching the nut, extending the nut length so as to enable sufficient strength at the time of bolting, and enabling application even to thin wall hydroformed parts and comprises inserting a metal pipe into a split mold having a pierce punch able to be moved perpendicular to an axis of the inserted metal pipe or in a slanted direction, having a front part narrower than a center part, and having around the front part a nut having an inside diameter larger than an outside diameter of the front part and smaller than an outside diameter of the center part; hydroforming it; then making the pierce punch advance to pierce part of the hydroformed part and pushing the nut by a center part arranged behind the nut and embedding the nut in the metal pipe.
Abstract:
An insertable fastener installation apparatus for a flat substrate has a thickness, T. A roller press station is used to press T-nuts into holes in the substrate. An optical vision system detects the location of the holes in the moving substrate and aligns the t-nuts with the holes. A computer controlled pick and place robot takes T-nuts from an escapement of a hopper feed system and aligns, but does not fully insert, the t-nuts in the substrate. A conveyor system feeds the substrates through the optical vision system, the pick and place robot station and the roller press station. A first roller is spaced apart from a second roller by a gap in the roller press station and the gap is less than the thickness of the substrate. The hopper feed system includes a bulk hopper, a bowl, a track and an escapement.
Abstract:
Apparatus (20) and a method for securing a clinch nut (24) to an AHSS sheet (26) as an assembly (22). In one embodiment, a parallel kinematic machine (PKM) (88) sequentially performs the operation, while another embodiment includes a nut ram assembly (112) that attaches clinch nuts (24) to the AHSS sheet (26), and a further embodiment includes a C frame (114) that supports the apparatus and is moved by a robot (130) to sequentially attach clinch nuts (24) to the AHSS sheet (26) at different locations. The attachment of the clinch nuts is performed in a light-safe manner.
Abstract:
The invention relates to a method for screwing a locking ring (1) onto a threaded bolt (2), wherein a coupling device (6) for being threaded into the threaded bolt (2) is driven in rotation by a rotary drive (4), and wherein the locking ring (1) is then screwed onto the threaded bolt (2), which is fixed by the coupling device (6), by a locking ring holder (3) which is driven in rotation by the rotary drive (4). The invention likewise relates to a method for screwing a locking ring (1) comprising a fastening part (18a) and a tear-off part (18b) onto a threaded bolt (2), wherein a removal gripper (22) grips the tear-off part (18b) and removes the tear-off part (18b) after the tear-off part (18b) has been torn off. The invention further relates to a screwing apparatus for executing a method according to the invention.
Abstract:
The present invention relates to a fastener element for attachment to a component, wherein the fastener element has a contact surface which contacts the component in the installed state. Furthermore, the fastener element has a mounting recess which faces the component in the dismantled state. The mounting recess is bounded by at least one sidewall and by a base section. The sidewall is, at least regionally, provided with at least one undercut which is effective in the axial direction of the fastener element. The base section is formed free of any aperture.
Abstract:
A die button for installation of a nut to a panel includes a button body with a panel end, and a cavity defined therein. An aperture is defined in the panel end at a mouth of the cavity. A shearing edge is at a perimeter of the aperture to shear a tab from the panel when a shearing force is applied to the panel by the nut driven by a punch of a press. A relief is in a portion of the perimeter of the aperture to bend a root portion of the panel connecting the tab to the panel without severing the root when the nut applies the shearing force. A reaction member is slidably disposed within the cavity. A resilient member is disposed within the cavity to urge the reaction member toward the panel end, thereby bending the tab to contact the nut and seal a bore.
Abstract:
A holeless plate member riveting method for riveting a retaining member to a holeless plate member using a press by: placing the holeless plate member on a first die of the press and attaching a mounting structure of the retaining member to the holeless plate member opposite to the first die, and then attaching a cavity of a second die of the press to the retaining member, and then operating the press to stamp the second die against the retaining member and the first die, forcing a cutting edge of the mounting structure of the retaining member to cut into the holeless plate member to the extent where a toothed portion and annular locating groove of an engagement structure of the retaining member are kept in permanent engagement with a deformed part of the holeless plate member.