Laser accurate drilling method and device of fiber composite aircraft panel

Abstract

The invention discloses a laser accurate drilling method and device of a fiber composite aircraft panel. The method comprises the following steps: after selecting panel installing the positioning mode, adjusting the spatial attitude of the panel; adopting the laser tracking measurement method to search a pre-locating hole according to technological requirements; using the pre-locating hole as datum to determine the position of connection holes to be prepared according to the technological requirements; adopting the laser ranging method to measure the panel normal direction in the area of the connection hole, coinciding the normal direction with the centre line of laser beam; and adjusting the size and displacement of laser processing beam according to the size and arrangement requirements of the connection holes, thus realizing the connection hole preparation of the fiber composite aircraft panel. The method of the invention can realize accurate positioning according to assembly requirements without producing deviated holes or inclined holes; the cutter can not be wore in the drilling process, cutting acting force can not be generated, the problems of drawing, layering, fibre breakage, cutting residual stress and deformation caused by drilling can be overcome, and the high-quality surface of holes can be formed.

Description

technical field [0001] The invention belongs to the technical field of laser processing, and in particular relates to a laser hole-making method and a device for a fiber composite material aircraft wall plate. Background technique [0002] As one of the most advanced processing technologies, laser processing mainly uses high-efficiency laser to remove the material of parts. It belongs to non-contact processing. It does not cause mechanical extrusion to the material, and has no mechanical stress, small thermal deformation and high processing accuracy. , The same batch of processing has the characteristics of high consistency and good effect. Laser processing can not only process metal material parts, but also non-metallic material parts. Non-metallic materials include fiber-reinforced composite materials, plexiglass, plastic, two-color board, bamboo wood, cloth, leather, rubber plate, stone , Artificial stone, ceramics and insulating materials, etc., different non-metallic m...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the prior art such as fast tool wear, need for sample processing, low precision, and easily damaged materials, the present invention provides a method and device for laser precision hole making of fiber composite aircraft siding, which adopts non-contact The laser processing method, through the process steps of multi-degree-of-freedom precise positioning of the fiber composite aircraft panel, hole position search, normal alignment of the panel, laser hole making and cooling, chip removal, etc., realizes the connection hole of the fiber composite aircraft panel Precise preparation to ensure the high assembly accuracy requirements of aircraft panels

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