摘要:
A structural part for a body or undercarriage of a motor vehicle includes a channel-shaped or hollow length portion made of steel sheet; and a bulkhead received for reinforcement in the length portion in an area of high stress. The bulkhead hereby extends in parallel relationship to the longitudinal axis of the length portion.
摘要:
In a method of making a control arm for a wheel suspension of a motor vehicle a blank of steel material having a tensile strength of at least 800 MPa is shaped, using a sheet metal forming process, into a shell body having a center web and plural flank portions extending from the center web in a same direction. The flank portions are connected by a latticed reinforcement made of plastic, without application of a heat treatment process.
摘要:
In a method of manufacturing a bending-resistant, torsionally yielding tubular profiled member as a transverse support of a twist beam rear axle of a passenger car, a tube blank of tempering steel is cold formed to a tubular profiled member with a torsionally yielding central longitudinal section of a U-shaped cross-section and with opposed torsion-proof end sections. At least partial sections of the tubular profiled member are annealed at a temperature level between 850° C. and 960° C. The tubular profiled member is then hardened in water at a temperature above the AC3 point and subsequently tempered at a temperature between 200° C. and 550° C. for a duration of more than five minutes. As an alternative, a tube blank of case hardening steel is used, and at least partial sections of the tubular profiled member formed from this tube blank are case-hardened during a heat treatment with carburization of the surface of the tubular profiled member and subsequent quenching. The tubular profiled member in both variants is then subjected to at least one outer surface hardening process and finally subjected to further configuration processing steps for completing a twist beam rear axle.
摘要:
A composite control arm shaft for motor vehicles includes two longitudinal control arms connected through a transverse beam, wherein the transverse beam has a trough-shaped double-wall torsion section essentially having the form of a V or U, approximately circular or oval tubular end sections and transition sections whose cross-section continuously changes from the end sections toward the torsion section. The transverse beam has in the transition sections thereof an internal partial foam filling.
摘要:
A method of manufacturing a pipe having sections with different cross-sectional configurations includes initially providing a sheet bar which has a rectangular base portion and at least one formation section integrally connected to the base portion. In the next step, the sheet bar is shaped into a hollow-cylindrical body. In this step, the base portion is deformed into a tubular shape and the formation section is deformed into a spiral shape. Subsequently, the final shaping of the pipe is carried out which may constitute widening of the formation section by a block which acts from the inside. In a subsequent joining procedure, abutting edges are connected.
摘要:
An adaptive crash structure of a vehicle body or chassis of a motor vehicle includes a first metal casting and a second metal casting. A deformation element in the form of a metal casting for absorbing energy interconnects and forms with the first and second metal castings a single piece construction through a casting process. The deformation element is comprised of a plurality of funnel-shaped wedge bodies which are disposed in succession, with neighboring wedge bodies being connected through intervention of a predetermined breaking web. Each wedge body is defined by a diameter, wherein the diameters of the wedge bodies are sized to allow the wedge bodies to move telescopically into one another when a limit stress is reached and the predetermined breaking webs rupture so as to effect a tight intergrip of the telescoping wedge bodies in a self-locking manner.
摘要:
Apparatus for heat-treating an elongate structural body part made from a blank compressed while being soft or from steel strip of hardenable 22 Mn B5 mod. steel sheet with a thickness of 1 mm to 3 mm, includes an apparatus for positioning the structural body part in substantially upright disposition. Placed in surrounding relationship to the structural body part is an induction element which can move from bottom to top, thereby being able to follow a contour of the structural body part and allowing to at least partially heat the structural body part to an austenitizing temperature suitable for hardening. Disposed adjacent to the induction element is a cooling unit which follows the induction element in movement direction. The induction element and the cooling unit are moveable relative to one another and connected to a tool carriage which is mounted to a column for movement in a vertical direction, in a transverse direction to the column and about a horizontal axis.
摘要:
In a method of making a tube a sheet metal blank. having opposite longitudinal flanks is placed in a die of a shaping tool. At least one of the longitudinal flanks of the sheet metal is provided with a contact projection suitable for resistance pressure welding. The blank is pressed into a U-shaped cavity of the cavity by a ram to shape the blank into a U-shaped configuration which is then shaped between an upper mold and a lower mold of a molding press into a tubular profile with the longitudinal flanks confronting one another. The upper mold has in an area of the confronting longitudinal flanks oppositely poled electrode strips which are insulated against one another. During subsequent welding operation, the contact projection on the one longitudinal flank is welded to the confronting longitudinal flank as a result of welding heat generated through introduction of an electric current via the electrode strips into the longitudinal flanks and a clamping pressure by which the upper and lower molds are held together.
摘要:
In a device for hydraulic forming of a tubular component under high inner pressure compressive conditions in a lower die and an upper die of a forming tool, the upper die can be coupled for relative limited movement by at least one piston-cylinder unit containing a hydraulic fluid with the press plunger of a travel-limited mechanical press and the cylinder interior of the piston-cylinder unit can be coupled for providing fluid communication with the interior of the component. Alternatively, in the device for hydraulic forming of a blank under high pressure compressive conditions in a forming tool comprising a lower die and an upper die, the upper die can be coupled for relative limited movement by at least one piston-cylinder unit containing a hydraulic fluid with the press plunger of a travel-limited mechanical press and the cylinder chamber of the piston-cylinder unit can be coupled for establishing fluid communication with the forming space of the forming tool.
摘要:
A method of manufacturing a composite front suspension control arm shaft for motor vehicles includes connecting two tubular longitudinal control arms to a transverse sectional member, wherein a connection portion adapted to the cross-sectional configuration of the ends of the transverse sectional member is produced at each longitudinal control arm, and wherein the ends of the transverse sectional member are positioned in an assembly position relative to the connection portions and are secured by welding thereto. The composite front suspension control arm shaft includes two tubular longitudinal control arms connected to a transverse sectional member, wherein the first length portion of each longitudinal control arm adjacent the wheel carrier is of rectangular configuration, wherein the width of the rectangular length portion is greater than the height of the length portion and a second length portion of each longitudinal control arm to be coupled to the support frame is of rectangular configuration, wherein the height of the second rectangular length portion is greater than its width, and wherein each longitudinal control arm has a connection portion adapted to the cross-sectional configuration of the ends of the transverse sectional member.