Fiber soft mold forming method and application for composite material reinforcing rib structural component forming

Abstract

The invention discloses a reinforcing fiber soft mold forming method and application for composite material component forming. The method is characterized in that a metal false piece which is completely consistent with the outline dimension of a composite material reinforcing rib structure component is machined through a mechanical manufacturing method, and a reinforced fiber soft mold tool with acertain rigidity used for forming the composite material component is manufactured through the metal false piece; and through the soft mold tool, the pressure applied by a hot pressing tank can be uniformly and accurately transferred to the composite material reinforcing rib structure component, so that the thermal hysteresis effect of the reinforcing rib part is avoided, the appearance size andthe contour degree of the reinforcing rib strip are guaranteed, and meanwhile, the manufacturing efficiency of the workpiece is improved.

Description

technical field [0001] The invention relates to a molding method and application of a reinforced fiber soft mold for molding composite material components. Background technique [0002] Resin-based carbon fiber composite materials have superior properties such as specific strength and specific stiffness, strong designability, good fatigue fracture resistance, corrosion resistance, and good dimensional stability. They are currently widely used in aviation, aerospace, transportation and other fields. High-performance structural materials. Among various carbon fiber composite molding processes, the autoclave process has uniform molding temperature and pressure, and has good adaptability to parts of different materials, shapes, sizes and structures. One of the main process methods of material components. [0003] With the increasing requirements for the strength and stiffness of composite parts, the structure of the parts is becoming more and more complex. Among them, the web ...

AI Technical Summary

Problems solved by technology

The disadvantages of using the mandrel mainly include the following three aspects: (1) Since the mandrel itself has a certain rigidity, it is difficult to achieve uniform and accurate conduction of external pressure through the mandrel, and it is easy to cause the thickness of the reinforcing rib of the part to be out of tolerance; (2) ) Since the mandrel has a certain thickness, according to the heat conduction effect, the temperature rise rate of the rib part of the part will lag behind that of other parts, thus affecting the internal molding quality of the part; very inconvenient

At the same time, the manufacturing and maintenance costs of the metal mandrel are relatively high, and the manufacturing cycle for repair or reprocessing is relatively long