Quick and low-cost simple tool for honeycomb processing and forming

Abstract

The utility model provides a quick and low-cost honeycomb processing and forming simple tool, which comprises a basic mold, an upper mold, a lower mold, an upper mold and a lower mold, and is characterized in that the basic mold is provided with a boss; the lining die is arranged on the boss; wherein the shape of the lining mold is matched with that of a real airfoil; one side of the honeycomb filler is attached to the lining mold, and the other side of the honeycomb filler is milled to be in a first target shape; wherein the face filled with the honeycomb is milled into a second target shape in advance according to requirements, and the second target shape comprises an arc shape and a step shape; the tool is simple in structure, convenient to operate, low in cost, short in manufacturing period, acceptable in precision and easy to apply and popularize, and has practical value.

Description

Technical Field

[0001] This application belongs to the technical field of honeycomb processing, and particularly relates to a simple tooling for rapid and low-cost honeycomb processing and forming. Background Art

[0002] In the process of manufacturing a certain type of blade airfoil section test piece, a new type of aramid paper honeycomb needs to be used as the trailing edge filling material. The aramid paper honeycomb has a complex structure of a special-shaped surface with a hyperboloid. According to the existing manufacturing and processing technology of aramid paper honeycomb, in order to ensure a certain accuracy and tight fixation, specific surface tooling molds and inspection molds are required for the machining of aramid paper honeycomb.

[0003] However, the cost of metal surface tooling molds is high, and the mold processing cycle is long. Moreover, the number of blade airfoil section test pieces to be manufactured is small, and the cost of investing in relatively expensive metal molds is high, and various costs are high. Therefore, a low-cost manufacturing process is needed for honeycomb forming and processing. Utility Model Content

[0004] Purpose of this application: In order to meet the manufacturing cycle of test pieces, this application provides a tooling for rapid and low-cost manufacturing of honeycomb filling with a special-shaped surface hyperboloid. The tooling is manufactured by using a composite material lining mold + basic mold method.

[0005] This application provides a simple tooling for rapid and low-cost honeycomb processing and forming. The tooling includes:

[0006] A basic mold with a boss;

[0007] A lining mold arranged on the boss; wherein, the shape of the lining mold is adapted to the real wing surface;

[0008] Honeycomb filling, one side of the honeycomb filling is attached to the lining mold, and the other side of the honeycomb filling is milled to a first target shape; wherein, one side of the honeycomb filling is milled to a second target shape in advance according to requirements, and the second target shape includes an arc shape and a stepped shape.

[0009] Preferably, the tooling further includes:

[0010] A first double-sided adhesive for pasting the lining mold on the boss;

[0011] A second double-sided adhesive for pasting the honeycomb filling on the lining mold.

[0012] Preferably, the upper surface of the boss includes a flat surface and an arc surface.

[0013] Preferably, the lining mold is a lining mold made of composite materials.

[0014] Preferably, the tooling further includes:

[0015] A milling device for milling both sides of the honeycomb filling.

[0016] Preferably, the tooling further includes:

[0017] A support seat disposed on the basic mold;

[0018] A detection card board having an arc surface, the detection card board is disposed on the support seat, and the detection card board is used to detect the first target shape.

[0019] The beneficial technical effects of the present application:

[0020] A simple tooling for rapid and low-cost honeycomb processing and forming provided by the present application has a simple structure, convenient operation, low cost, short manufacturing cycle, acceptable accuracy, is easy to promote and apply, and has practical value. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a simple tooling for rapid and low-cost honeycomb processing and forming provided by an embodiment of the present application. Detailed Description of the Embodiment

[0022] A honeycomb processing and forming tooling provided by the present application includes a basic mold, a composite material lining mold, double-sided adhesive and a compensating adhesive film. Among them, there are two layers of the double-sided adhesive. One layer is attached to the basic mold for tightly connecting the composite material lining mold and the basic mold; the other layer is attached to the uppermost layer of the composite material lining mold for tightly connecting the lining mold and the honeycomb filling part. The composite material lining mold is between the double-sided adhesives. The lining mold is composed of carbon fiber prepreg and glass fiber prepreg. The lining mold composed of carbon fiber prepreg and glass fiber prepreg has two surfaces. One surface of the lining mold needs to be completely attached to the basic mold, and the other surface needs to be completely attached to the surface of the honeycomb.

[0023] Combined with the attached Figure 1 , the application is further described in detail:

[0024] The simple tooling for honeycomb processing and forming is based on borrowing the existing basic mold 1, and a conforming lining mold 3 is made of composite materials. The simple tooling realizes the bonding and fixing of the honeycomb filling and the basic mold, so as to perform honeycomb milling.

[0025] The simple tooling for honeycomb processing and forming is composed of a basic mold 1, double-sided tape 2, a composite material lining mold 3, and double-sided tape 4. The basic mold 1 can be an existing honeycomb processing tooling made of metal material or composite material, mainly used for the positioning, fixing of honeycomb filling, and clamping of the inspection card board. After one side of the honeycomb filling with a special-shaped surface and hyperbolic surface is processed, it is buckled onto the simple tooling for honeycomb processing and forming, positioned and fixed, and then the other side is processed. The double-sided tape 2 needs to be attached to the surface of the basic mold 1. The composite material lining mold 3 needs to determine the laying thickness and length according to the basic mold 1 and the honeycomb filling 5. According to the stepped height on the surface of the honeycomb filling, the different thicknesses and lengths of the composite material lining mold at the upper side position are determined. The thickness is kept consistent along the span direction, and the thickness along the chord direction needs to be consistent with the honeycomb filling surface. According to the surface of the basic mold 1, the surface of the lower side of the composite material lining mold is determined, and the two surfaces need to fit perfectly.

[0026] After the composite material lining mold 3 is completely bonded, it is necessary to conduct a fitting test with the honeycomb filling that has been processed on one side. During the fitting test, a transparent isolation film needs to be added between the honeycomb filling 5 and the composite material lining mold 3. During the fitting test, a heavy object needs to be used to press the unprocessed side of the honeycomb filling. After 5 - 10 minutes, the honeycomb filling is removed. When the transparent isolation film fits perfectly with the lining mold, there will be no suspended air bubbles, and thus a compensating adhesive film is added to determine the final surface of the composite material lining mold. Finally, double-sided tape 4 is added for the final fixation of the honeycomb filling, and the processing of the honeycomb filling is carried out.

[0027] Further, the honeycomb filling can be aramid paper honeycomb, metal aluminum honeycomb, or other honeycomb parts.

[0028] Further, the composite material lining mold needs to determine the laying and internal structure through numerical simulation, serving as a cushion for the mold and the real honeycomb parts.

[0029] Further, the composite material lining mold material can be carbon fiber prepreg, glass fiber prepreg adhesive film, or sandwich non-deformable materials such as foam, and it can be uncured prepreg.

[0030] In other embodiments of the present application, the simple tooling for honeycomb processing and forming is based on borrowing the existing basic mold 1, and a conforming lining mold 3 is made of composite material. The simple tooling realizes the bonding and fixing of the honeycomb filling and the basic mold, and thus honeycomb milling is carried out.

[0031] The simple tooling for honeycomb processing and forming is composed of a basic mold 1, double-sided tape 2, a composite material lining mold 3, and double-sided tape 4. The basic mold 1 can be an existing honeycomb processing tooling made of metal material or composite material, which is mainly used for the positioning, fixing of honeycomb filling, and clamping of the inspection card board. After one side of the honeycomb filling with a special-shaped surface and hyperboloid is processed, it is inverted onto the simple tooling for honeycomb processing and forming, and after positioning and fixing, the other side is processed. The double-sided tape 2 needs to be attached to the surface of the basic mold 1.

[0032] Among them, the composite material lining mold 3 needs to determine the laying thickness and length according to the basic mold 1 and the honeycomb filling 5. According to the stepped height on the surface of the honeycomb filling, different thicknesses and lengths of the composite material lining mold at the upper side position are determined. The thickness remains consistent along the span direction, and the thickness along the chord direction needs to be consistent with the honeycomb filling surface. According to the surface of the basic mold 1, the surface of the lower side of the composite material lining mold is determined, and the two surfaces need to fit perfectly.

[0033] In a feasible implementation method, after the composite material lining mold 3 is completely bonded, a honeycomb filling with one side processed is used for fitting test. During the fitting test, a transparent isolation film needs to be added between the honeycomb filling 5 and the composite material lining mold 3. During the fitting test, a heavy object needs to be used to press the unprocessed side of the honeycomb filling. After 5 - 10 minutes, the honeycomb filling is removed. When the transparent isolation film fits perfectly with the lining mold, there will be no suspended air bubbles, and thus the adhesive film is increased for compensation to determine the final surface of the composite material lining mold. Finally, double-sided tape 4 is added for the final fixation of the honeycomb filling, and the processing of the honeycomb filling is carried out.

[0034] Among them, the honeycomb filling is composed of metal aluminum honeycomb, fiber prepreg, and glass fiber prepreg.

Claims

1. A simple tooling for rapid and low-cost honeycomb machining and forming, characterized in that The tooling includes: A basic mold with a boss; A lining mold disposed on the boss; wherein, the shape of the lining mold is adapted to the actual wing surface; Honeycomb filling, one side of the honeycomb filling is attached to the lining mold, and the other side of the honeycomb filling is milled to a first target shape; wherein, one side of the honeycomb filling is milled to a second target shape in advance according to design requirements, and the second target shape includes an arc shape and a stepped shape.

2. The tooling according to claim 1, characterized in that, The tooling further includes: A first double-sided adhesive for pasting the lining mold on the boss; A second double-sided adhesive for pasting the honeycomb filling on the lining mold.

3. The tooling according to claim 2, wherein, The upper surface of the boss includes a flat surface and an arc surface.

4. The tooling according to claim 3, characterized in that, The lining mold is a lining mold made of composite materials.

5. The tooling according to claim 1, characterized in that, The tooling further includes: A milling device for milling both sides of the honeycomb filling.

6. The tooling according to claim 1, characterized in that, The tooling further includes: A support disposed on the basic mold; A detection card board with an arc surface, the detection card board is disposed on the support, and the detection card board is used to detect the first target shape.

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