Abstract: In a method of making a control arm, a middle piece is held in a mounting of a rotary friction welding machine so as to be constraint against rotation and movement in an axial direction. End pieces are rotated in synchronism on opposite ends of the middle piece so as to rub friction welding sites of the end pieces and friction welding sites on the middle piece on one another to initiate a friction welding process. After releasing the middle piece, the friction welding sites are compressed through axial displacement of at least one of the end pieces.

Abstract: In a method of making a control arm, a middle piece is held in a mounting of a rotary friction welding machine so as to be constraint against rotation and movement in an axial direction. End pieces are rotated in synchronism on opposite ends of the middle piece so as to rub friction welding sites of the end pieces and friction welding sites on the middle piece on one another to initiate a friction welding process. After releasing the middle piece, the friction welding sites are compressed through axial displacement of at least one of the end pieces.

Abstract: A control arm includes a connection tube and two mounting eyes respectively attached to opposite ends of the tube. Each mounting eye has a sleeve and a rubber-metal element vulcanized into the sleeve. In a method of making such a control arm, an elongate tubular member is sized to a sleeve blank of a length commensurate with the tube. Parallel thereto, an extruded profile is made with a cross sectional configuration of the sleeve and subsequently sized to the axial height of the sleeve. Rubber-metal elements are vulcanized into the sleeve blanks which together with the tube are then clamped, axially shiftable, in a friction welding machine for subsequently fabricating protruding collars on the sleeves through material removal and joining the end surfaces of the protruding collars with the end surfaces of the tube. While still clamped, the tube and the mounting eyes are calibrated through cold upsetting and the joints are smoothed.

Abstract: A control arm includes a connection tube and two mounting eyes respectively attached to opposite ends of the tube. Each mounting eye has a sleeve and a rubber-metal element vulcanized into the sleeve. In a method of making such a control arm, an elongate tubular member is sized to a sleeve blank of a length commensurate with the tube. Parallel thereto, an extruded profile is made with a cross sectional configuration of the sleeve and subsequently sized to the axial height of the sleeve. Rubber-metal elements are vulcanized into the sleeve blanks which together with the tube are then clamped, axially shiftable, in a friction welding machine for subsequently fabricating protruding collars on the sleeves through material removal and joining the end surfaces of the protruding collars with the end surfaces of the tube. While still chucked, the tube and the mounting eyes are calibrated through cold upsetting and the joints are smoothed.

Abstract: A bumper arrangement for a vehicle has a transverse support to be connected transversely to longitudinal supports of a frame of a vehicle. The transverse support has a shell member of a U-shaped cross-section with a stay and two legs connected to opposite sides of the stay. The legs have a grate structure comprised of several adjacently positioned and spaced apart ribs defining adjacently positioned openings.

Abstract: A bumper arrangement for a vehicle has a transverse support to be connected transversely to longitudinal supports of a frame of a vehicle. The transverse support has a shell member of a U-shaped cross-section with a stay and two legs connected to opposite sides of the stay. The legs have a grate structure comprised of several adjacently positioned and spaced apart ribs defining adjacently positioned openings.