Abstract: Provided is an attaching device that can convey a component, such as a nut, to a portion to be welded without using an air cylinder. The present invention provides an attaching device (100) that attaches a nut (240) to a bracket (230). The attaching device (100) has a component feeding part (10) that stores the nut therein, a welding part (40) that welds the nut to the bracket by using electrodes (41, 42), a conveying part (20) that conveys the nut stored in the component feeding part to a position where the nut is to be attached to the bracket, and a feeding head (30) that temporarily positioned between the electrodes (41, 42) and that places the nut conveyed from the conveying part on the lower electrode of the pair of electrodes.

Abstract: Method of manufacturing a vehicular arm component having a particular torsional rigidity and a sufficient tensile strength. Method of manufacturing a vehicular arm component 1 having a hollow shape in open cross-section by subjecting workpiece W, which is a flat plate, extending in an XY plane to pressing in stages such that two side surfaces W1, W2 of the workpiece in an XZ plane formed by the X direction and a Z direction face one another across a gap G, the method including a restriking process in which a protrusion 113 disposed on a restriking die 110 to be extended in the X direction is arranged in the gap between the two side surfaces facing one another and the two side surfaces are brought into contact with the protrusion such that the workpiece is pressed from an outer periphery to an inner periphery.

Abstract: A projection of burr is provided by forming an appropriate gap to set a cast-in member to a cast-in mold, completely closing the gap when the cast-in mold is clamped, and correcting cast-in positioning (axis mating) to a die-cast component by a clamping operation of the die-cast mold, regardless of a dimensional precision of the cast-in member upon a manufacture. Steel plate cast-in member 2, wrapped cast except for a bonding portion 2b to a steel plate bonding member 3 upon molding a die-cast component 1, has a mold contact portion 4 at a boundary between a cast-in portion 2a wrapped cast with a die-cast component 1 and the bonding portion 2b. When a cast-in mold A is clamped, the mold contact portion 4 is brought into butting contact with the cast-in mold A, gap S between the cast-in member 2 and the cast-in mold A, cavity a, is closed.

Abstract: [Object] Damage to a surface of a resin bush caused by press-fitting is prevented even when a configuration for positioning during welding is added. [Solving Means] A rolled collar (40) is a steel rolled collar into which a resin bush (90) is pressed-fitted, and which is joined to a joining member by welding. The rolled collar includes a main body part (50) formed in a hollow cylindrical shape, and a clinch part that joins both end surfaces of the main body part together by fitting. The rolled collar includes a notch part (70) formed by cutting off a portion of an annular edge (53) in the main body part. Here, a convex jig determining a position of the main body part at a time of welding is fit into the notch part. The rolled collar includes a cavity part (80) formed to be hollow from an inner circumferential surface side on a wall surface around the notch part to form a clearance (81) between the press-fitted resin bush and an edge portion (71) of the notch part on the inner circumferential surface side.

Abstract: A torsion beam suspension capable of preventing an abrupt rigidity change in a connection part between a trailing arm and a torsion beam is provided. The present invention is characterized in that in a torsion beam suspension 100 in which to right and left trailing arms 50 extending in a front-rear direction of a vehicle body and swinging vertically, a torsion beam 16 extending in a right and left direction of the vehicle body is joined, two or more types of rigidity adjustment portions 15, 18, 24 and 25 which adjust a rigidity from the trailing arms to the torsion beam are disposed with positions of the rigidity adjustment portions displaced from each other.

Abstract: The present invention is a torsion beam suspension 100 including an upper member 10 and a lower member 20, and including right and left trailing arms 50 configured to include a pair of trailing arm configuration members 11 and the pair of lower members and configured to extend in a longitudinal direction of a vehicle body and to be swingable in a vertical direction and a torsion beam 16 which is disposed between the right and left trailing arm configuration members of the upper member 10. The lower member includes an upper connection 21 and a beam joint portion 22 inclined from the upper connection 21 to a bottom portion of the U-shaped cross section of the torsion beam and joined with the torsion beam.

Abstract: Provided is an attaching device that can convey a component, such as a nut, to a portion to be welded without using an air cylinder. The present invention provides an attaching device (100) that attaches a nut (240) to a bracket (230). The attaching device (100) has a component feeding part (10) that stores the nut therein, a welding part (40) that welds the nut to the bracket by using electrodes (41, 42), a conveying part (20) that conveys the nut stored in the component feeding part to a position where the nut is to be attached to the bracket, and a feeding head (30) that temporarily positioned between the electrodes (41, 42) and that places the nut conveyed from the conveying part on the lower electrode of the pair of electrodes.

Abstract: Providing a method of manufacturing a vehicular arm component having a torsional rigidity of a predetermined level or less and a sufficient tensile strength in the entire circumferential direction. A method of manufacturing a vehicular arm component for manufacturing the vehicular arm component 1 having a hollow shape in open cross-section by subjecting a workpiece W, which is a flat plate, extending in an XY plane formed by an X direction and a Y direction to pressing in stages such that two side surfaces W1, W2 of the workpiece in an XZ plane formed by the X direction and a Z direction face one another across a gap G, the method including a restriking process in which a protrusion 113 disposed on a restriking die 110 to be extended in the X direction is arranged in the gap between the two side surfaces facing one another and the two side surfaces are brought into contact with the protrusion such that the workpiece is pressed from an outer periphery to an inner periphery.

Abstract: A torsion beam suspension capable of preventing an abrupt rigidity change in a connection part between a trailing arm and a torsion beam is provided. The present invention is characterized in that in a torsion beam suspension 100 in which to right and left trailing arms 50 extending in a front-rear direction of a vehicle body and swinging vertically, a torsion beam 16 extending in a right and left direction of the vehicle body is joined, two or more types of rigidity adjustment portions 15, 18, 24 and 25 which adjust a rigidity from the trailing arms to the torsion beam are disposed with positions of the rigidity adjustment portions displaced from each other.

Abstract: [Problem] To provide a vehicular arm component which is easily manufactured and advantageous in reducing a cost without causing a steep change in a cross section. [Solution] A vehicular arm component is formed by subjecting a workpiece (W), the workpiece being a flat plate extending in a plane formed by a first direction and a second direction orthogonal to the first direction, to press processing in stages so as to butt and joint two side surfaces in the second direction.

Abstract: A hollow component made of thin sheet metal members is described, along with a method of manufacturing such hollow component. The method involves applying a flow drilling process on one sheet metal member of a pair of sheet metal members having a gap G between them to form a first collar part. A flow drilling process is applied on the other sheet metal member of the pair to form a second collar part as well as to cause an inner tip of the second collar part to fuse with an inner tip of the first collar part. A cylindrical connection member is formed to strengthen a flat sheet metal members.

Abstract: [Problem] A method for manufacturing a bent hollow pipe is provided, in which even when a three-dimensionally bent pipe is formed, a gap, an uneven thickness, and the like would not occur at contact portions at the ends of both of the flange portions when press work is finished, and thus a pipe having the high quality contact portions can be formed. [Solution] In a method for manufacturing a bent hollow pipe, a material W, which is to be processed and which is a flat plate extending a first plane formed by a first direction and a second direction perpendicular to the first direction, is pressed in a stepwise manner using a plurality of forming dies from a third direction perpendicular to the first plane, so that two sides of a second plane formed by the second direction and the third direction of the material W are brought into contact with each other, and the bent hollow pipe is made to be bent and extend in a three dimensional manner that is bent in the first plane and in the second plane.

Abstract: [Problem] A method for manufacturing a bent hollow pipe is provided, in which even when a three-dimensionally bent pipe is formed, a gap, an uneven thickness, and the like would not occur at contact portions at the ends of both of the flange portions when press work is finished, and thus a pipe having the high quality contact portions can be formed. [Solution] In a method for manufacturing a bent hollow pipe, a material W, which is to be processed and which is a flat plate extending a first plane formed by a first direction and a second direction perpendicular to the first direction, is pressed in a stepwise manner using a plurality of forming dies from a third direction perpendicular to the first plane, so that two sides of a second plane formed by the second direction and the third direction of the material W are brought into contact with each other, and the bent hollow pipe is made to be bent and extend in a three dimensional manner that is bent in the first plane and in the second plane.

Abstract: [Problem] To provide a highly rigid and curved suspension arm for a vehicle, which can be manufactured with high productivity without forging or casting. [Solution] A second plate 20 is sandwiched between a pair of first plates 10, and the plates 10 and the plate 20 are bonded to each other by weld bonding.

Abstract: [Problem] To provide a vehicle suspension arm including components having simple shapes, being reasonably reduced in size and weight, and capable of being manufactured at low cost. [Solution] In formation of a lower arm 2 for vehicle suspension, an arm body 10 includes a pair of side plates 11 opposed to each other, a bottom plate 12 formed integrally to connect the side plates 11, and a spring receiving seat member 13 attached to the side plates 11, wherein the side plates 11 are arranged to extend within a lower surface area R of the spring receiving seat member 13.

Abstract: A cross member extends in a vehicle width direction and has opening portions at end portions in the vehicle width direction. The cross member includes a cross member main body, a closing plate, and a cylindrical spacer. The end portion of the cross member main body in the vehicle width direction includes a recessed portion on a side of the cross member main body opposite to a side on which the cross member main body is opened, the recessed portion being recessed toward the inner surface side.

Abstract: The invention is characterized in that, when protrusion parts 30 are raised from a substrate W and the protrusion parts 30 are formed into spacers 12 with a predetermined outer diameter D and height H, the protrusion parts 30 are temporarily formed so as to have a diameter larger than a predetermined outer diameter D and a height larger than a predetermined height H, and the protrusion parts 30 are crushed, and leading end portions 30b of the protrusion parts 30 are protruded in a radially outward direction so as to have a double-layered structure, and then through-holes 35 are opened at the leading end portions 30b. Accordingly, the leading end portions 30b have strength due to a double-layered structure, and side portions 30a also have high strength due to contraction by pressing, whereby the sleeve-integrated member includes the entirely high-strength spacers 12.

Abstract: Disclosed herein is a suspension arm component for vehicles with sufficient strength or rigidity to withstand repetitive compressive and tensile forces, and a method for manufacturing such a component by pressing or hemming process alone, without recourse to any welding process, forming quickly and simply, a process with advantages in terms of material yield and cost. The suspension arm component for vehicles includes first flange pieces as well as second flange pieces, and a pair of half members, each having a hat-like shaped cross-section perpendicular to its axis, are joined together to protrude the first flange part and the second flange part from an expanded part, where both the first flange part and the second flange part extend linearly along the axis of the main body part. The main body part presents a rectangular shape in its side view.

Abstract: A cross member extends in a vehicle width direction and has opening portions at end portions in the vehicle width direction. The cross member includes a cross member main body, a closing plate, and a cylindrical spacer. The end portion of the cross member main body in the vehicle width direction includes a recessed portion on a side of the cross member main body opposite to a side on which the cross member main body is opened, the recessed portion being recessed toward the inner surface side.

Abstract: Disclosed is a suspension subframe (1) in which highly rigid side-end members (10) are attached to opposite side end sections of a flat plate-like main body member (2) so as to extend in the front-rear direction of a vehicle. The subframe (1) has extremely high rigidity against forces acting thereon from the front, rear, left, right and the like with the aid of the side-end members (10). The subframe (1) makes it possible to cut out materials with almost zero waste, and is made lightweight and inexpensive.