Automatic belt laying method for hexagonal hole of composite

Abstract

The invention discloses an automatic belt laying method for a hexagonal hole of a composite. The automatic belt laying method comprises the following steps that a, the edges of a hexagon are chamfered, a mold positioned by the hexagonal hole is made, and the mold is fixed and laid on the upper surface of a tool table by demolding cloth through projection of a laser projector; b, unidirectional prepregs with the resin content of 34% are taken out of a freezer and loaded to a material roll U-shaped shaft of an automatic belt laying machine; c, the unidirectional prepregs are heated to 60 DEG C,the laying angle precision of a material belt is + / -1 degree, the clearance value is set as 1 mm, the preimpregnated material belt is laid on the outer surface of the hexagonal positioning hole in themold through the automatic belt laying machine to form a material layer, and the hexagonal positioning hole and the material layer are packaged in a vacuum bag to be vacuumized and compacted; d, thevacuum bag is conveyed into an autoclave, so that a part is cured and formed; and e, the mold is opened, and the cure-formed material layer is taken out to obtain the finished part. The problem aboutautomatic belt laying of the hexagonal hole design of a composite component can be solved.

Description

technical field [0001] The invention belongs to the technical field of automatic tape laying of composite materials, and in particular relates to an automatic tape laying method for hexagonal holes of composite materials. Background technique [0002] The characteristic structures in the wing skin include hexagonal holes, densely lost layers of layers, and zigzag layers. The tape laying machine is expanded to be used in the laying process of the upper and lower skins of the engineering composite wings, so as to realize the automatic production of the wing skins and improve the production efficiency. [0003] Since the holes in the composite parts are designed to reduce the weight of the aircraft or install the cable pipelines, if the parts are laid up by hand, it is necessary to use the blanking machine to accurately cut the blanks and holes of each layer, and then With the help of a laser projector, the shape outline of the part layup is projected on the layup surface of t...

AI Technical Summary

Problems solved by technology

Using the automatic tape laying machine for laying, the automatic unloading process is canceled, but the one-step automatic tape laying machine cuts the hole position of the tape, and the tape is pulled by the automatic tape laying shoe or roller and the backing paper , fit with the tooling surface, and then lay it on the tooling surface. The cut holes will be pulled by the pressure shoe or roller and the backing paper. , so there is a need for a method to ensure that the hexagonal holes in the wing skin are laid efficiently and accurately using the automatic tape laying machine, which can meet the quality requirements of the automatic tape laying process without bridging, no lap joints, and no wrinkles

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