According to one embodiment, a stabilizer manufacturing device includes a first forming unit and a second forming unit. The first forming unit includes a first forming mandrel, a holding member and a first bending roller. The first forming mandrel includes a first forming portion having an arc shape when viewed from above, and a support portion which supports a workpiece. The first bending roller moves along the first forming portion. The second forming unit includes a second forming mandrel, a holding member and a second bending roller. The second forming mandrel includes a second forming portion having an arc shape when viewed from above, and a support portion which supports the workpiece. The second bending roller moves along the second forming portion.

The invention relates to a chassis suspension component with a bracket made from a formable base material, preferably sheet steel, and comprising at least one slot for receiving a connecting bolt and at least one stop for an eccentric disc which is or can be connected rotationally fixedly to the connecting bolt. In order to be able to produce the eccentric stop process-reliably and economically without the risk of crack formation, the invention proposes to provide a tab formed from the base material and folded relative to a body portion of the suspension component and having a recess surrounding the slot, which recess defines two elongate stop faces running parallel to each other, wherein the stop faces serve as a stop for the eccentric disc. The invention also relates to a method for producing a chassis suspension component.

A terminal sealed portion is formed on an end portion of a hollow rod made of steel. An enclosed space is formed on an inner side of the hollow rod. At an end of the enclosed space, a terminal gap is formed. A volatile powdered rust inhibitor is supplied in the enclosed space. As the volatile powdered rust inhibitor is vaporized, the enclosed space is turned into a rust-inhibiting atmosphere. As the vaporized component of the volatile powdered rust inhibitor is adsorbed to an inner surface of the enclosed space, an inner surface rust-inhibiting film is formed. The vaporized component also enters inside the terminal gap, and forms a terminal rust-inhibiting film.

A technique for improving durability of a frame is provided. A method for manufacturing a honeycomb structure from a triangular hollow pipe composed of a first flat plate, a second flat plate, and a third flat plate includes forming a first slit in the hollow pipe so as to cut all the flat plates except the first plate and forming a second slit in the hollow pipe at a position different from a position of the first slit position in a longitudinal direction of the hollow pipe so as to cut all the flat plates except the second flat plate and folding back the first plate at the first slit position and folding back the second flat plate at the position of the second slit position.

A hollow stabilizer includes a curved part having eight regions defined in a cross section. A first region includes a 90° first part when the center of the inside of the curve is taken to be at 0° and the center of the outside of the curve is taken to be at 180°. A third region includes a 0° third part. A fifth region includes a 270° fifth part. A seventh region includes a 180° seventh part. The radii of curvature of the respective outer surfaces of the third part and the seventh part are larger and the radii of curvature of the respective outer surfaces of the second part and the sixth part are smaller than the radii of curvature of the respective outer surfaces of the fourth part and the fifth part.

An electric resistance welded steel pipe for manufacturing a hollow stabilizer has a Rankford value in a pipe longitudinal direction of from 0.7 to less than 1.0. The electric resistance welded steel pipe is subjected to cold bending and then to a heat treatment including quenching and tempering to manufacture a stabilizer. The cold bending is cold rotary draw bending. When bent with a bend radius of from 1.0 times to 3.0 times an outer diameter of the pipe before cold bending, a flattening ratio is from 0% to 10%, a thickness reduction rate on a bending outside and a thickness increase rate on a bending inside are from 0% to 10%, and additionally, a circumferential length change of a bending center portion is from 0% to 10%. A Vickers hardness of the stabilizer after the heat treatment is adjusted to from 400 HV to less than 580 HV.

A method for producing a connection element (1, 30), in particular for an articulated connection of components arranged in a chassis. The connection element (1, 30) is formed by a profile element (6, 31) which includes a joint portion (2), for accommodating a joint component (5), a central portion (4), and a connection portion (3). The profile element (6, 31) is formed by an arrangement of at least one first profile section (7, 32) and at least one second profile section (8, 33), which are held in position, with interlock, by at least one fixing element (9, 10), a joint component (5) is inserted, into the joint portion (2) so formed, and the profile element (6, 31) and the joint component (5) are partially overmolded with a plastic material.

The invention provides a production method for stabilizers which produces with high productivity in a compact production line, without tempering. The production method for stabilizers of the invention includes: forming a steel bar material containing at least C: 0.15 wt % to 0.39 wt %, Mn, B and Fe into a product shape by bending; and quenching the bent steel bar material in a medium having a heat transfer coefficient higher than or close to that of water.

An automotive component manufacturing method includes a molding process of pressing a portion of a hollow tube formed from a metal material, or a composite material including a metal and a resin, so as to deform the portion of the hollow tube, from a tube outer side toward a tube inner side, to beyond an axial center of the hollow tube, and mold the portion of the hollow tube into a deformed section deformed with a concave profile; and a deformation process of deforming a location having a high level of residual stress in a closed cross-section configured by the deformed section so as to deform the location out-of-plane.

A stabilizer comprises a main bar that is elastically deformable, a pair of connecting plates respectively configured to be connected to a pair of left and right suspension apparatuses, and transition sections connecting both end portions of the main bar and the pair of connecting plates, a size of one transition section of the transition sections in a plate thickness direction of one connecting plate of the connecting plates gradually decreasing from the main bar toward the connecting plate, wherein the minimum value of the Vickers hardness of the transition section is 200 HV or more.