Abstract: A weld nut is provided and is welded to a base material through a nut insertion aperture formed within the base material. The weld nut includes a nut body that forms an appearance of a weld nut, and an insertion component that is formed to integrally protrude from the first surface of the nut body and inserted into the nut insertion aperture. Additionally, a bolt fastening aperture is formed to penetrate through the center of the nut body together with the insertion component.

Abstract: A rivet stud bolt is disclosed. A rivet stud bolt for mounting an element to at least one panel includes a bolt portion to which the panel is assembled, a flange integrally formed to an end of the bolt portion, and a rivet portion integrally connected to the flange, in which at least two slits are formed, and the rivet portion is plastically deformed and connected to the panel.

Abstract: A flexible roll forming device is provided. The roll forming device includes bases respectively disposed on opposite sides with respect to a process direction center line in a left/right direction of which rails are configured thereon along a lateral direction of the process direction center line, and upper and lower forming rolls configured to vary both positions in the lateral direction of processing, and angles from the process direction.

Abstract: A mounting bolt for a sub-frame is disclosed. A mounting bolt for a sub-frame that is configured to a sub-frame to a front side member of a vehicle according to one or a plurality of exemplary embodiments of the present invention may include a bolt body that is inserted into a through-hole of a mounting bracket that is fixed to the front side member and joined to the mounting bracket through a head portion, and a support body that has a cylindrical shape, is friction-welded to a center of an upper surface of a head portion of the bolt body along one line, and of which an upper end is joined to the front side member.

Abstract: A mounting unit of a shock absorber for a vehicle is disclosed. A mounting unit of a shock absorber for a vehicle that fixes an upper portion of a shock absorber connected to wheels to a vehicle body according to an exemplary embodiment of the present invention may include a shock absorber housing mounted to the vehicle body; a mounting module disposed in the shock absorber housing, and at least two mounting hole is formed at the mounting module; a tapping nut engaged through a mounting hole of the mounting module in the shock absorber housing; and a fixing nut engaged to an end portion of the tapping nut protruded to outside of the shock absorber housing and fixing the mounting module to the shock absorber housing; the mounting module and fixing nut are temporarily assembled to the shock absorber housing through a temporarily assembly apparatus and engaged to the tapping nut.

Abstract: A vibration spot welding device according to an exemplary embodiment of the present invention may include a first welding tip that is disposed to contact one side surface of metal plates that are overlapped, and a second welding tip that is disposed to contact the other side surface of the metal plates corresponding to the first welding tip, wherein the second welding tip includes a first electrode portion that is disposed to contact the metal plate so as to transmit a current thereto, and a second electrode portion that is disposed to contact the metal plate so as to receive the current that is transferred from the first electrode portion through the metal plate.

Abstract: The present invention relates to a joining method, and more specifically relates to a method for joining different kinds of plates that joins at least two plate members of which materials thereof are different from each other through laser welding. For this, a method for joining different kinds of plates according to an exemplary embodiment of the present invention may include disposing a first plate and a second plate, materials of which are different from each other, such that they are overlapped with each other, and joining the first plate and the second plate by irradiating a laser beam at a predetermined inclination angle and in a regular pattern onto the overlapped portion of the two plates.

Abstract: A rivet screw drill for fastening at least two panels, the rivet screw drill includes a head portion mounted to a fastening tool, a fastening portion integrally formed with the head portion and of which a screw thread is formed thereto and a perforating portion integrally formed with the fastening portion and pressurizing and penetrating the panels by rotation according to operation of the fastening tool, wherein a mounting protrusion, connected to the fastening tool, is protruded from the head portion and a plurality of support ends are formed to the mounting protrusion.

Abstract: A mounting unit of a shock absorber for a vehicle is disclosed. A mounting unit of a shock absorber for a vehicle that fixes an upper portion of a shock absorber connected to wheels to a vehicle body according to an exemplary embodiment of the present invention may include a shock absorber housing mounted to the vehicle body; a mounting module disposed in the shock absorber housing, and at least two mounting hole is formed at the mounting module; a tapping nut engaged through a mounting hole of the mounting module in the shock absorber housing; and a fixing nut engaged to an end portion of the tapping nut protruded to outside of the shock absorber housing and fixing the mounting module to the shock absorber housing; the mounting module and fixing nut are temporarily assembled to the shock absorber housing through a temporarily assembly apparatus and engaged to the tapping nut.

Abstract: A frame for a self-piercing rivet system that can provide bearing capacity for joining a rivet to a plate by using an anvil die and a punch unit is disclosed.

Abstract: A roller hemming apparatus is disclosed. A roller hemming apparatus for hemming an outer panel with respect to an inner panel according to an exemplary embodiment of the present invention may include a tool body mounted at a front end of an arm of a robot, a pre-hemming roller mounted to a front side of a mounting block, which is disposed at a lower portion of the tool body, through a first mounting bracket, a main hemming roller mounted to a rear side of the mounting block through a second mounting bracket, and at least one heater mounted at a lateral side of the mounting block and configured to heat a flange portion of the outer panel.

Abstract: A center pillar reinforcement unit for a vehicle may include: a plurality of reinforcement beams disposed on an exterior circumference of a center pillar inner panel in a height direction; an upper bracket disposed on an upper end portion of the center pillar inner panel and a roof rail, and fixing an end portion of the plurality of reinforcement beams; a center bracket disposed on a center portion of the center pillar inner panel, and fixing a center of the plurality of reinforcement beams; a lower bracket disposed on a lower portion of the center pillar inner panel, and fixing a lower portion of the plurality of reinforcement beams; and a gusset bracket formed inside of a side sill seal so that the lower portion of the plurality of reinforcement beams is assembled.

Abstract: A rivet module is disclosed. The rivet module is provided to join at least two sheets of base materials in a solid state, the rivet module including: i) a shank portion to be mounted on a reciprocal and rotatable joining tool; ii) a base material friction portion that is integrally connected to the shank portion and drills through the base material friction portion as the joining tool causes the base material friction portion to be rotated while applying pressure to the base materials; and iii) a base material fastening portion that is fixedly fitted to the shank portion, supports the base material friction portion, and is fastened to the base materials through a thread formed on the outer peripheral surface thereof.

Abstract: A self piercing projection welding rivet is disclosed. According to an exemplary embodiment of the present invention, a self piercing projection welding rivet for joining a non-ferrous material and a steel material may include a head portion, a shank portion integrally connected to the head portion for piercing the non-ferrous material, and a projection portion formed at a piercing end of the shank portion for being brought into contact with the steel material.

Abstract: A welding device for a stretch bender is disclosed. The welding device for the stretch bender may include: an operating unit adapted to move forward toward or rearward from a bending die for shaping a shaped beam and mounted in front of the bending die; and a welding unit mounted at the operating unit and welding flange portions of the shaped beam that is completely formed by the bending die so as to prevent the flange portions from being overlapped with each other when extracting the shaped beam, the welding unit being movable forward or rearward against the operating unit.

Abstract: A clamping device for a bending press includes a clamping die with a space formed therein, a clamping holder rotatably disposed within the space of the clamping die around a rotation shaft formed thereto, an upper cam block and a lower cam block respectively disposed within the clamping holder and slidable along the horizontal direction, and of which a cam slant surface is formed at a front side of the upper cam block and the lower cam block respectively, an upper clamping block and a lower clamping block contacting each cam slant surface of the upper cam block and the lower cam block, and clamping an end of a pipe disposed therebetween by sliding along a slant direction of the clamping holder, and a pressing unit selectively pressing the upper cam block and the lower cam block.

Abstract: Disclosed is a rivet nut unit. The rivet nut unit may comprise a rivet nut including a flange of which a lower surface is supported by a upper surface of a plate while riveting the plate by a riveter, a body part of which the inside of a lower part is worked to have screw threads and which is integrally formed in a cylindrical shape with a lower portion of the flange, and a hole-making head which is disengageably located on a lower end of the body part to rotate together with the rivet nut and bore an insertion hole in the plate while the riveter rotates in order to insert the body part into the plate.

Abstract: A rivet nut unit is disclosed. An exemplary embodiment of the present invention provides a rivet nut unit bonding at least one plate by being riveted to the plate and fastened with a bolt that may include: a head portion supported on an upper surface of the plate at a position corresponding to a processed hole in the plate, and formed with a penetration hole in the middle thereof corresponding to the hole; and an insertion portion extended from one side of the head portion, inserted into the hole, and formed with at least one slot and a protruding end bent to a lower surface of the plate for coupling the head portion to the plate while riveting the plate.

Abstract: Disclosed is an apparatus for replacing a welding tip for spot welding. In an exemplary embodiment of the present invention, the apparatus for replacing a welding tip for spot welding includes a post installed in a workplace having a spot welding machine with upper, and lower welding guns provided thereto, a base plate mounted on a top of the post, a welding tip removing unit mounted on one side of an upper side of the base plate for clamping and removing a spent welding tip mounted to the upper welding gun or the lower welding gun by operation of a cylinder, a holder unit mounted on the upper side of the base plate spaced from the welding tip removing unit, and a welding tip cassette mounted to the holder unit in a state new welding tips to be mounted to the upper, and lower welding guns are set in an upper side and a lower side thereof.

Abstract: A method of laser welding is disclosed. The method may be performed after an upper steel plate and a lower steel plate are overlapped. The method may include: forming a molten pool at the upper steel plate and the lower steel plate and welding the upper steel plate and the lower steel plate by irradiating a laser beam of focal region to a welding portion of the upper steel plate and the lower steel plate along a main welding pattern; and melting a peripheral portion of a keyhole formed at an end of the main welding pattern and welding the upper steel plate and the lower steel plate by irradiating the laser beam of the focal region along a fine welding pattern added to an end portion of the main welding pattern.