A system to solve the springback phenomenon in the process of laying up composite materials

Abstract

The invention relates to a system for solving a springback phenomenon in a composite material laying process, and the system based on a torque / force sensor and a three-dimensional morphology measurement system is used for solving the springback phenomenon of a prepreg tape in the composite material laying process. Based on six-axis robot platform, motion control on a tape laying head is achieved easily; a joint of the tail end of a robot and the tape laying head is provided with the torque / force sensor, the pressure of a main press roller of the tape laying head is detected real-timely, and constant-pressure laying is ensured as far as possible to be used for preventing generation of the springback phenomenon; the three-dimensional morpography measurement system is equipped, a workpiece contour is reconstructed, and a video detection technology is used for quality control of the composite material laying process; the original tape laying head is equipped with an auxiliary compaction device and an auxiliary heating system, under heating of the auxiliary heating system, the auxiliary compaction device can recompact the prepreg tape of regions generating the springback phenomenon, and the probability of springback phenomenon generation is reduced to the minimum, so as to realize full-automatic laying with high quality and high efficiency.

Description

technical field [0001] The invention relates to a system for solving the springback phenomenon in the laying process of composite materials, which is used in the field of automatic laying of composite materials and solves the springback phenomenon generated in the laying process of prepreg tapes. Realize the fully automatic laying of composite materials in the true sense. Background technique [0002] Composite materials are more and more widely used in the field of aerospace, and show an irreplaceable important position. [0003] Composite materials are represented by carbon fiber reinforced resin-based composite materials, which have outstanding advantages such as light weight, high strength, high modulus, fatigue resistance, corrosion resistance, integration of structure and function, integration of design and manufacturing, and easy forming of large components. The extensive application of advanced composite materials is an important way to improve the performance of ae...

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Problems solved by technology

[0008] This springback is an important defect in the field of composite material laying. If it is not dealt with, it will seriously affect the quality of the final product, greatly increase the scrap rate, greatly increase the production cost, and seriously cause waste of resources. Most importantly, this Most of the workpieces produced by this method are used in the aviation field. If this potential quality defect is not detected, it will cause immeasurable losses. Therefore, it is very important to find a way to solve the springback phenomenon.

[0009] At present, the method of manual real-time monitoring and manual compaction is mainly used in China to solve the problem. It seems feasible, but in fact it is a semi-automatic laying, which violates the original intention of automatic laying, and at the same time increases the labor intensity of the staff. The most important It seriously affects the quality and efficiency of laying. Therefore, it is still of great significance to seek a method to prevent the springback phenomenon or detect whether it occurs after the springback phenomenon occurs, and to take corresponding measures to solve this phenomenon. research value

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