Composite bending forming process of non-equal-height cross ribs

Abstract

The invention provides a composite bending and forming process for non-equal-height cross-shaped rib type pieces. The composite bending and forming process comprises the following steps: sequentially carrying out high rib formation and then carrying out short rib formation. A cross-shaped rib crossed region is prevented from being thinned by two steps of the process in sequence. High and short ribs and the crossed region are formed by the matched movement of different slide blocks, an ejection block, a convex die and a concave die, so that the disadvantages caused by the fact that a traditional plastic forming process is used for the non-equal-height cross-shaped rib type pieces can be effectively solved, and the forming force is smaller and the service life of the die is long.

Description

technical field [0001] The invention relates to a technology in the field of material forming, in particular to a compound bending forming process for non-equal-height cross bars. Background technique [0002] Under the current increasingly urgent demand for lightweight structures, energy saving and consumption reduction, many parts are designed as thin webs with vertical and horizontal internal rib structures to reduce the weight without losing the functionality of the parts. There are many types of ribbed film members, and they are widely used in high-tech fields such as aviation, ships, and rockets. Different fields have different requirements for the performance of parts, and there are also various processing methods and processes, but they all require that the parts should not be seriously thinned. [0003] The use of traditional casting and welding processes has low material utilization, high processing costs, and poor mechanical properties of the product. Although pl...

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Problems solved by technology

[0005] Aiming at the shortage of thinning key parts in the existing thin film forming process with ribs, the present invention proposes a compound bending forming process for non-equal-height cross-rib parts, which utilizes different sliding blocks, top blocks, punches and dies. Cooperating with the movement to form the high and low ribs and their cross regions can effectively solve the shortcomings of the traditional plastic forming process for non-equal height cross ribs, and the forming force is small and the mold life is long

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