Progressive loading precision forming die device and process method for complex component of ultra-long grid high-rib wall plate

Abstract

The invention discloses a progressive loading precision forming die device and process method for a complex component of an ultra-long grid high-rib wallboard, and relates to the technical field of hot working. The progressive loading precision forming die device comprises an upper die and a lower die, and a punch is arranged on the upper die; and the lower die comprises an insert, a die core anda die holder, an installation groove is formed in the upper surface of the die holder, the die core is installed in the installation groove in a sliding mode, and the insert is installed on the uppersurface of the die core. According to the device and method, through horizontal sliding of the die core on the die holder, local progressive loading of a forging on a single-action press is realized,the die size is reduced, and the folding defect caused by overall loading is avoided.

Description

technical field [0001] The invention relates to the technical field of thermal processing, in particular to a progressively loaded precision forming mold device and a process method for complex components of ultra-long grid and high-rib wall panels. Background technique [0002] With the increasing requirements for high performance and lightweight of carrying equipment and vehicles, lightweight and high-strength materials (such as aluminum alloys, titanium alloys, high-performance steels, etc.) Ultra-long complex structure) has become an effective way to improve its reliability and reduce its weight. [0003] For complex components such as super-long (length greater than 1 meter) grid high-rib wall panels, long-axis connecting rods or crankshafts, if the traditional overall forging forming method is used, a large-tonnage die forging press is required, which will cause excessive forming loads of forgings. Large, resulting in shortened mold life. The use of isothermal local ...

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Problems solved by technology

[0004] In the past, the local loading isothermal forming mold device and process method mainly used multiple combined upper dies for local loading. The patent of JPH05293581A divided the upper die into a stepped pressure plate and multiple inserts for forming the web. During the forming process, drag The stepped pressure plate causes the height difference between the inserts to form the web area of ​​the forging and press the unformed area. The boundary area between the inserts and the inserts of this upper die structure must be selected near the forging ribs. Otherwise, because there is a gap between the insert and the insert, the billet will flow into it and produce burrs, and the size of the upper die will be limited by the size of the forging

[0005] The patent of CN106134318B adopts the combination mold of inner mold and outer mold. The forming process is mainly divided into two steps. The first step is to use part of the mold to form part of the rib features of the forging. The second step is to assemble part of the mold into one After the mold is loaded as a whole, although the forming load is reduced, the size of the upper mold is not reduced, and in the second step of overall loading, because the formed area is not constrained by the mold, it will cause the metal in the unformed area to move toward the formed area. Regional flow produces folds

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