Tool manufacturing method for preventing air leakage of composite material forming tool

A composite material and forming tooling technology, which is applied in the field of tooling manufacturing to prevent composite material forming tooling from leaking, can solve problems affecting the use of forming tooling, tooling splitting or air leakage, and affecting tooling airtightness, etc., to reduce maintenance costs , to ensure the internal quality, to ensure the effect of high temperature air tightness
CN112873904AActive Publication Date: 2021-06-01航天海鹰(镇江)特种材料有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
航天海鹰(镇江)特种材料有限公司
Publication Date
2021-06-01

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Abstract

The invention discloses a tool manufacturing method for preventing air leakage of a composite material forming tool. The composite material forming tool is used for forming a composite material part. The composite material forming tool is formed by assembling a composite material paving die and a supporting frame. The composite material paving die is formed by paving and hot-pressing tool prepreg with different thicknesses on the basis of a transition die. In the paving process, pressing strips are paved in the R area and the corner area of the transition die, the tool prepreg is paved in the edge allowance area of the tool in a photo frame mode, and a seam filling long strip is paved in the butt joint area. The photo frame type paving avoids expansion of the edge defect caused by cutting to the interior and cracking during collision or demolding in the carrying process; and the high-temperature air tightness of the tool is further ensured by the pressing strips and the seam filling long strip. The tool manufactured by the method is good in air tightness, the maintenance cost is effectively reduced, the forming quality and the manufacturing period of the composite material part are guaranteed, and good practical and economic values are achieved.
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Description

technical field

[0001] The invention relates to a tooling manufacturing method for preventing composite material forming tooling from air leakage. Background technique

[0002] Composite parts (hereinafter referred to as composite parts) are made of resin-based carbon fiber composite materials. Due to the advantages of resin-based carbon fiber composite materials, such as high specific strength and specific stiffness, high degree of structural integration, strong designability, good fatigue resistance, corrosion resistance, and good dimensional stability, it has become a popular choice for aviation, aerospace, transportation, etc. High-performance structural materials widely used in the field. Since the manufacture of composite parts must use specially designed tooling to complete the compounding of materials and the forming process of parts at the same time. Composite parts hardly need any further processing after solidification and molding, and their internal structure a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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