Patent Type: Invention Disclosure

Application (Patent) No.: CN201610996774.3

The present invention relates to a method for sewing and connecting metal and composite materials, which belongs to the field of dissimilar material connection. The connection method includes the following steps: firstly, machining neatly arranged transparent slot holes at the pre connected part of the metal component with the composite material; Secondly, roughen the surface of the contact area where the metal component is pre connected to the composite material; Thirdly, insert fibers or dry fibers pre impregnated with resin into the slot, overlap the composite preform with the metal component, and fix it with a fixture; Fourth, use a sewing needle to pull the suture thread through the metal slot and the composite material preform, and then thread it through adjacent slots for stitching. Finally, remove the fixture and place the connector into the molding mold to solidify and form it as a whole. The suture connection method of the present invention, due to the introduction of Z-direction suture thread, can greatly improve the connection strength between metal and composite materials. Not only is the connecting component lightweight, but it also does not cause stress concentration.