A kind of composite material billet ultrasonic hammer shaping method

Abstract

The invention relates to an ultrasonic hammering shaping method for composite billets. The method solves the difficult problem of local compaction shaping of the composite billets after glue suction and belongs to the technical field of production of structural composite materials. The invention adopts the ultrasonic hammering method to realize the effect that a prepreg body locally achieves the force and heat coupling in the direction of the laying thickness until compaction shaping is finished through heating and pressurizing; the heating temperature of the prepreg body of the composite material is controlled by adjusting vibration power of an ultrasonic generator; the heating temperature of the prepreg body is normally lower than 90 DEG C. In addition, with various structural forms suchas square, round, concave and convex, the ultrasonic hammer head can be suitable for structure shaping of different prepreg bodies such as fillet joints, window edges and local inflection points. Besides, the pressure strength can be manually provided and can also be provided by connecting with a mechanical arm, and pneumatic or hydraulic equipment. During the ultrasonic hammering process, a layer of isolated material can be paved on the surface of the prepreg body, so that the damage to fibers on the surface layer during the hammering process is avoided.

Description

technical field [0001] The invention relates to a composite material billet ultrasonic hammer shaping method, which solves the problem of local compaction and shaping of the composite material billet after absorbing glue, and belongs to the technical field of structural composite material manufacturing. Background technique [0002] Composite shells often have thickened areas such as downturned windows and flanges where bridging is likely to occur during the laying process of prepregs, making local compactness difficult to control. At the present stage, local compaction is carried out by clamping and pressing with artificial bow clamps, but the compaction tooling is relatively heavy, and multiple people are required to work together at room temperature for one clamping, the operating space is obviously limited, and the compaction quality is affected by the ambient temperature , the consistency of the compaction effect is difficult to guarantee. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] Composite material shells often have areas where the prepreg is prone to bridging during the laying process, such as the thickening area of ​​the down-turned window and the flanging, which makes the local density difficult to control

At the present stage, local compaction is carried out by clamping and pressing with artificial bow clamps, but the compaction tooling is relatively heavy, and multiple people are required to work together at room temperature for one clamping, the operating space is obviously limited, and the compaction quality is affected by the ambient temperature , the consistency of the compaction effect is difficult to guarantee

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