摘要:
A structural motor-vehicle element is made by hot-shaping and press-hardening a steel workpiece into the element and thereafter heating the hot-shaped and press-hardened workpiece to between 320° C. and 400° C. The steel workpiece constitutes in weight percent, Carbon (C)0.18% to 0.3% Silicon (Si)0.1% to 0.7% Manganese (Mn)1.0% to 2.5% Phosphorus (P)max. 0.025% Chromium (Cr)up to 0.8% Molybdenum (Mo)up to 0.5% Sulfur (S)max. 0.01% Titanium (Ti)0.02% to 0.05% Boron (B)0.002% to 0.005% Aluminum (Al)0.01% to 0.06% the rest iron including impurities caused by the smelting process.
摘要:
A shaped part is made by forming in a flat steel plate a thickness-reducing groove and hot-shaping and hardening the flat steel plate into a three-dimensional shape. Then the plate formed with the groove is cooled, and a piece is sheared off the cooled plate along a cut line in the groove.
摘要:
A double pressure cylinder arrangement including a first pressure cylinder and a second pressure cylinder positioned in a spaced and axis-parallel relationship to the first pressure cylinder. A carrier strut is connected to a bottom side of the first pressure cylinder and the second pressure cylinder. The carrier strut includes a intermediate section. A substantially u-shaped housing element has two leg sections. Each leg section houses one of the pressure cylinders. Connection lines for driving the first pressure cylinder and the second pressure cylinder are integrated in the intermediate section.
摘要:
An air spring assembly for a motor vehicle, including an air spring, a rolling piston, a tubular rolling air spring bellows arranged concentrically about a central longitudinal axis of the air spring, and an air spring cover. A first partial air spring bellows has a first embedded textile reinforcement and a second partial air spring bellows has a second embedded textile reinforcement The first textile reinforcement has first reinforcing threads, the preferred axis of which extends parallel or nearly parallel to the axis of the central longitudinal axis of the air spring The second textile reinforcement has second reinforcing threads, the first preferred axis of which extends obliquely to the longitudinal axis of the air spring and the second preferred axis of which extends obliquely to the longitudinal axis of the air spring, wherein the first and the second preferred axis are at an angle to each other.
摘要:
A pressure cylinder including a cylinder housing having one end including an opening. A piston is axially displaceable within the cylinder housing. A piston rod is coupled to the piston and extends through the opening at the one end of the cylinder. A cylinder base closes off the cylinder at an end of the cylinder housing opposite the opening. The cylinder also includes a pressure chamber between the piston and the cylinder base and capable of being pressurized by a pressure medium and a switching disk for interacting with a switch to determine the position of the piston. The switching disk is displaceably positioned in the pressure chamber in frictional engagement and coaxially with the piston rod so that the switching disk passes to a starting position near the piston in response to a pressure impulse overcoming the frictional engagement when the pressure chamber is first pressurized.
摘要:
An air spring assembly for a motor vehicle, including an air spring, a rolling piston, a tubular rolling air spring bellows arranged concentrically about a central longitudinal axis of the air spring, and an air spring cover. A first partial air spring bellows has a first embedded textile reinforcement and a second partial air spring bellows has a second embedded textile reinforcement The first textile reinforcement has first reinforcing threads, the preferred axis of which extends parallel or nearly parallel to the axis of the central longitudinal axis of the air spring The second textile reinforcement has second reinforcing threads, the first preferred axis of which extends obliquely to the longitudinal axis of the air spring and the second preferred axis of which extends obliquely to the longitudinal axis of the air spring, wherein the first and the second preferred axis are at an angle to each other.