Method for correcting moulding surface of forming mould for antenna cover

Abstract

The invention relates to a method for correcting a moulding surface of a forming mould for an antenna cover, which is technically characterized in that a numerical control measuring machine is utilized for measuring the shape curved surface of a real object of the antenna cover, thus the measured point cloud data of the antenna cover is further obtained. By matching the measured point cloud data of the antenna cover with the designed curved surface of the antenna cover, the deviation between the measured point cloud data of the antenna cover and the designed curved surface of the antenna cover is calculated, the deviation value is taken as a deformation amount, the moulding surface of the mould is correspondingly corrected when the forming mould is designed for the antenna cover, and the high-precision antenna cover is further rapidly manufactured. The moulding surface of the forming mould for the antenna is corrected through deformation laws and deformation calculation of all points,and the forming precision of the antenna cover is improved. Compared with the conventional mould testing and mould repair method, the method provided by the invention has the advantages that the frequency of mould testing and mould repair and the design time of the mould are reduced, the utilization rate of materials is improved, and the manufacturing cost of the antenna cover is significantly reduced.

Description

technical field [0001] The invention relates to a method for modifying the profile of a radome forming die, and relates to a profile correction technology for an aircraft composite material radome forming die. Background technique [0002] At present, the aircraft radome is made of composite materials, and the radome has a complex shape and is formed by an autoclave. When the forming mold material is cast aluminum or cast iron, due to the difference in thermal expansion coefficient between the mold material and the radome material, and the influence of stress and strain on the mold caused by heating and pressure during the curing process of the composite material, the formed radome will have a large For example, the maximum error of a wingtip radome of a certain type of aircraft reaches 10mm, which will affect the aerodynamic shape and wave transmittance of the radome, and put forward higher requirements for assembly. Therefore, improving the precision of radome products is...

AI Technical Summary

Problems solved by technology

[0013] In order to avoid the deficiencies of the prior art, the present invention proposes a radome forming mold surface correction method, aiming at the deformation problem of the aircraft radome during the heating and curing process, under the condition of raw materials, molding equipment and existing molding process The surface correction method can reduce the number of trial molds and mold repairs and obtain a high-precision radome

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