Forming tooling and forming method of large-size composite material T-shaped stringer

Abstract

The invention provides a forming tool and a forming method for a large-sized T-shaped composite material stringer. Sectional forming core molds are connected into a whole by utilizing side baffles and connection reinforcing plates, and the rigidity is reinforced, so that the straightness of a stringer structure is further guaranteed, the large-sized T-shaped composite material stringer can be accurately manufactured, and the forming quality and the forming accuracy are improved; according to the forming tool and the forming method, a hydraulic device is applied to a mold removing process of composite material parts for the first time, the characteristics of high transfer power, easy transfer and configuration and the like of the hydraulic device are utilized, liquid serves as a working medium, and the pressure of the liquid is transformed into mechanical energy, so that a needed straight physical stretching process is obtained, the connection of the forming tool and the hydraulic device and a removing process of the forming core molds are realized through the straight physical stretching process, the problem of damage to the T-shaped composite material stringer in a conventional mold removing mode is avoided, the workload of mold removing operators is alleviated, and the mold removing efficiency is improved.

Description

technical field [0001] The invention relates to a forming tool and a forming method of a large-size composite material T-shaped stringer, belonging to the technical field of composite material forming. Background technique [0002] Because of its high rigidity and other characteristics, the T-shaped truss is widely used in the reinforcement of the main load-bearing structures such as the fuselage and wing panels of the aircraft. Due to the large size of the above-mentioned structure, the length of the T-shaped stringer also becomes longer, often as long as more than ten meters, which makes the forming mandrel difficult to process, and the full-scale mandrel is less rigid and prone to deformation resulting in T-shaped It is difficult to guarantee the straightness and position of the girder. [0003] According to the structural characteristics of T-shaped trusses, in the existing manufacturing process, segmented metal hard molds are often used as forming core molds to ensure ...

AI Technical Summary

Problems solved by technology

However, the above-mentioned molding method not only has the problem that the straightness and molding quality of the stringer cannot be guaranteed due to the easy movement of the segmented molding mandrel, but also the product will inevitably be damaged due to physical knocking during the demoulding process. , affect product quality, and even cause damage to the forming core mold, which seriously affects the manufacturing progress of the product

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