The disclosure relates to a method and a device for the production of dimensionally accurate sheet metal components.

The present disclosure provides a method and a device for producing sheet-metal parts with substantially reduced spring-back.

A method of forming and quenching a product via electrically heating includes providing tools that have been electrically heated, providing a die forming shell for supporting a component and for defining a final shape of a formed product formed from the component, and providing a support structure for supporting the die forming shell during the heating of the component or tools. Two portions of the die forming shell are joined together so that an inner surface of the two portions cooperate to form a cavity that defines the shape of the formed product. The component is formed into the formed product, whereby the component is (a) heated before the formed product is formed and/or (b) heated while the formed product is formed. The formed product is quenched via conductive quenching through the die forming shell by at least one of water and a gas.

A battery case lid is formed by working a metal plate, and includes a substrate section and an explosion-proof valve formed in the substrate section. The explosion-proof valve has a reduced thickness section that is thinner than the substrate section, and the reduced thickness section is formed by extending the metal plate by applying pressure while the metal plate is kept unrestrained.

A battery case lid is formed by working a metal plate, and includes a substrate section and an explosion-proof valve formed in the substrate section. The explosion-proof valve has a reduced thickness section that is thinner than the substrate section, and the reduced thickness section is formed by extending the metal plate by applying pressure while the metal plate is kept unrestrained.

The method for producing at least one notch in an outer wall of a tube includes guiding a first punch being made of a preforming tooth, causing the preforming tooth to penetrate through the wall of the tube until a protuberance is formed, positioning a solid cylindrical mandrel inside the tube. Then, the method includes guiding a second punch with a punching tooth, a leading end of the punching tooth having a shape complementary to a shape of the notch to be made in the wall of the tube, positioning a punching mandrel inside the tube, and having a groove suitable for containing the upset material. The invention can be used for notching headrests for the seats of a motor vehicle.

The method for producing at least one notch in an outer wall of a tube includes guiding a first punch being made of a preforming tooth, causing the preforming tooth to penetrate through the wall of the tube until a protuberance is formed, positioning a solid cylindrical mandrel inside the tube. Then, the method includes guiding a second punch with a punching tooth, a leading end of the punching tooth having a shape complementary to a shape of the notch to be made in the wall of the tube, positioning a punching mandrel inside the tube, and having a groove suitable for containing the upset material. The invention can be used for notching headrests for the seats of a motor vehicle.

A protruding portion is formed in a metal plate material by use of a plurality of molding tools each of which has a die and a punch. In a first step, an initial protruding portion is formed in the metal plate material by use of a first molding tool. In this step, a top of the initial protruding portion is formed to be thinner than other parts. In a second step, a sidewall of the initial protruding portion is rolled out by use of a second molding tool, and the protruding portion is formed.

A protruding portion is formed in a metal plate material by use of a plurality of molding tools each of which has a die and a punch. In a first step, an initial protruding portion is formed in the metal plate material by use of a first molding tool. In this step, a top of the initial protruding portion is formed to be thinner than other parts. In a second step, a sidewall of the initial protruding portion is rolled out by use of a second molding tool, and the protruding portion is formed.

A forming die includes: a lower forming die having a bottom part and a side wall part; an upper forming die that is movable toward the bottom part of the lower forming die along an axis parallel to the side wall part of the lower forming die; and a push-in die that is movable toward the bottom part of the lower forming die along the axis between the side wall part of the lower forming die and the upper forming die.