Hole machining method of reinforced resin matrix composite prepreg of fiber fabric

Abstract

The invention provides a hole machining method of a reinforced resin matrix composite prepreg of fiber fabric, specifically comprising the steps of: after cutting the reinforced resin composite prepreg of fiber fabric, laminating and flattening the reinforced resin composite prepreg of fiber fabric; after packaging a plastic thin film, freezing wrapped prepreg blank at temperature between -14 DEG C to -24 DEG C; and drilling holes on the prepreg blank laminated by a thin plate drill or a hole opener. The invention improves the hole drilling manufacturability of the prepreg, reduces the roughness of hole wall, enhances the precision of machining size (to IT9) without deficiencies such as overlaps and burrs on the hole wall and the like, improves the production efficiency and lowers the rejection rate without special devices.

Description

technical field

[0001] The invention belongs to the field of preparation of fiber fabric-reinforced resin-based composite materials, and in particular relates to a hole processing method for fiber-reinforced resin-based composite material prepregs. Background technique

[0002] At present, there are three main hole processing methods for fiber-reinforced resin-based composite material prepregs: 1. Manual hole cutting. Use other tools to cut out the shape of the hole according to the line. 2. The cutting machine cuts holes, using a mechanical prepreg cutting machine to cut holes on the prepreg with a pointed cutter. 3. Laser cutting holes, using a special laser cutting machine or a laser blanking machine to cut holes on the prepreg. The main disadvantages of the above methods are: the processing thickness is relatively thin, manual cutting and cutting machine cutting can only be processed in a single layer, the processing thickness is less than 0.3mm, and the thickness of t...