阅读说明：本技术 一种用于碳纤维复合材料天线的成形模具 (Forming die for carbon fiber composite material antenna ) 是由 包鹏 向纪邦 蔡文侃 李克郎 谢振清 曾品松 刘艳阳 聂俊 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种用于碳纤维复合材料天线的成形模具,包括主模体组件和底架组件,主模体组件可拆式安装在底架组件上,主模体组件包括框架和安装在框架上用于碳纤维复合材料天线成形的弧形面板,弧形面板和框架均采用殷瓦钢材料成形。本发明的主模体组件采用独特的三点支撑结构,既能保证主模体加工精度,又能保证检测重复性,同时主模体组件采用殷瓦钢材料,显著减小了主模体组件与碳纤维复合材料天线之间的线膨胀差异,进而能够保证高精度天线的成型精度。(The invention discloses a forming die for a carbon fiber composite material antenna, which comprises a main die body component and an underframe component, wherein the main die body component is detachably arranged on the underframe component, the main die body component comprises a frame and an arc-shaped panel which is arranged on the frame and used for forming the carbon fiber composite material antenna, and the arc-shaped panel and the frame are both formed by invar steel materials. The main die body assembly adopts a unique three-point supporting structure, so that the processing precision of the main die body can be ensured, the detection repeatability can be ensured, meanwhile, the main die body assembly adopts invar steel materials, the linear expansion difference between the main die body assembly and the carbon fiber composite material antenna is remarkably reduced, and the forming precision of the high-precision antenna can be further ensured.)

1. The utility model provides a forming die for carbon-fibre composite antenna, characterized in that, includes master mould body subassembly (1) and chassis subassembly (2), removable the installing in master mould body subassembly (1) on chassis subassembly (2), master mould body subassembly (1) includes frame (11) and installs arc panel (12) that are used for the carbon-fibre composite antenna to take shape on frame (11), arc panel (12) and frame (11) all adopt invar steel material to take shape.

2. The forming die for the carbon fiber composite antenna as recited in claim 1, wherein the forming surface of the upper side of the arc-shaped panel (12) has a surface roughness Ra ≦ 0.1 and a surface accuracy RMS ≦ 0.005 mm.

3. The forming mold for the carbon fiber composite material antenna as recited in claim 1, wherein the frame (11) comprises an upper end plate (111), a support plate (112) and a lower end plate (113), the upper end and the lower end of the support plate (112) are respectively connected with the upper end plate (111) and the lower end plate (113), and the support plate (112) is provided with weight-reducing ventilation holes (1121).

4. A forming tool for a carbon fibre composite antenna according to any one of claims 1-3, characterized in that it further comprises three sets of apexes (4), the apexes (4) having upper ends supported on the underside of the main mould assembly (1) and lower ends resting on the backing plate (21) of the undercarriage assembly (2).

5. The forming die for the carbon fiber composite antenna as recited in claim 4, wherein the material of the tip (4) is 45# steel, and the tip (4) is quenched to a hardness of HRC 33-36.

6. The forming die for the carbon fiber composite antenna according to any one of claims 1 to 3, further comprising a spacing assembly (3) mounted on the base frame assembly (2), wherein the spacing assembly (3) comprises at least two coarse positioning posts (32) capable of being matched with spacing holes on the main mold body assembly (1).

7. The forming die for the carbon fiber composite antenna as recited in any one of claims 1 to 3, wherein the base frame component (2) and the main mold body component (1) are provided with lifting bolts (5) or lifting bolt holes for connecting the lifting bolts (5).

Technical Field

The invention relates to the technical field of satellite communication, in particular to a forming die for a carbon fiber composite material antenna.

Background

In the field of antenna forming mold design, how to ensure the high precision of a forming mold of a carbon fiber composite material antenna in the forming process is a difficult problem. The traditional die material and the composite material antenna have large linear expansion difference, and the precision after molding is difficult to ensure; meanwhile, the machining precision of the molded surface of the traditional main mold body assembly is greatly influenced by the flatness of a place where a platform and the like are placed, and the precision of the molded surface of the mold is not easy to guarantee.

Disclosure of Invention

The invention aims to provide a forming die for a carbon fiber composite material antenna, which mainly solves the problems.

In order to achieve the purpose, the invention discloses a forming die for a carbon fiber composite antenna, which comprises a main die body assembly and an underframe assembly, wherein the main die body assembly is detachably arranged on the underframe assembly, the main die body assembly comprises a frame and an arc-shaped panel arranged on the frame and used for forming the carbon fiber composite antenna, and the arc-shaped panel and the frame are both formed by invar steel materials.

Furthermore, the surface roughness Ra of the forming surface on the upper side of the arc panel is less than or equal to 0.1, and the surface precision RMS is less than or equal to 0.005 mm.

Furthermore, the frame includes upper end plate, backup pad and lower end plate, the upper and lower both ends of backup pad respectively with upper end plate and lower end plate are connected, just be provided with on the backup pad and subtract heavy bleeder vent.

Furthermore, the device also comprises three groups of apexes, wherein the upper ends of the apexes are supported on the lower side of the main mold body assembly, and the lower ends of the apexes are abutted to the base plate of the underframe assembly.

Further, the material of the tip is 45# steel, and the tip is quenched to the hardness of HRC 33-36.

Furthermore, the main die body assembly further comprises a limiting assembly arranged on the bottom frame assembly, and the limiting assembly comprises at least two thick positioning columns matched with the limiting holes in the main die body assembly.

Furthermore, lifting ring screws or lifting ring screw holes connected with the lifting ring screws are arranged on the underframe assembly and the main mould body assembly.

Compared with the prior art, the invention has the advantages that:

the main die body adopts a unique three-point supporting structure, the processing precision of the die profile is slightly influenced by the flatness of the place where the platform and the like are placed, and the profile precision of the main die body assembly is easy to ensure. Furthermore, the main module component is made of invar steel materials, so that the linear expansion difference between the main module component and the carbon fiber composite material antenna is remarkably reduced, and the forming precision of the high-precision antenna can be guaranteed.

The present invention will be described in further detail below with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic perspective view of a forming mold for a carbon fiber composite antenna according to a preferred embodiment of the present invention;

FIG. 2 is a schematic perspective view of a main mold body assembly according to the preferred embodiment of the present invention;

FIG. 3 is a perspective view of the disclosed undercarriage assembly;

FIG. 4 is an exploded view of the main mold body assembly disclosed in the preferred embodiment of the present invention;

fig. 5 is a perspective view of a tip disclosed in a preferred embodiment of the present invention.

Illustration of the drawings:

1. a main mold body assembly; 11. a frame; 111. an upper end plate; 112. a support plate; 1121. weight-reducing air holes; 113. a lower end plate; 12. an arcuate panel; 2. a chassis assembly; 21. a base plate; 22. a rectangular tube; 3. a limiting component; 31. a base; 32. a coarse positioning column; 4. a tip; 41. a support block; 42. a support cone; 5. an eye screw.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1 to 5, a forming mold for a carbon fiber composite antenna according to a preferred embodiment of the present invention includes a mold body assembly 1, a bottom frame assembly 2, a position limiting assembly 3, and a tip 4. Wherein:

the main mould body assembly 1 consists of a frame 11 and an arc-shaped panel 12, the materials are invar steel, the thermal expansion coefficient is small, the difference of the linear expansion coefficient and the linear expansion coefficient of the carbon fiber composite material antenna is small, and the main mould body assembly is used for paving and pasting composite material skins and forming a high-precision reflector. The underframe assembly 2 is supported by a common steel backing plate 21 and a rectangular pipe 22, and is a storage platform of the main mould assembly 1. The limiting component 3 comprises a base 31 and a coarse positioning column 32, and is used for coarse positioning and limiting when the main die body component 1 is placed on the base plate 21 after being assembled with the underframe component 2. The center 4 has three positions, is assembled with the main module assembly 1 and then placed on the base plate 21, is used for supporting the main module assembly 1 at three points, and is easy to ensure the forming precision of the reflector.

The arc panel 12 of the master mould body component 1 is in a mirror surface state, the surface roughness Ra is less than or equal to 0.1, the surface precision RMS is less than or equal to 0.005mm, and the requirements of normal temperature and high temperature air tightness are met.

The tip 4 is made of 45# steel and comprises a supporting block 41 on the upper side and a supporting cone 42 on the lower side, the supporting block 41 is provided with a screw hole connected with the lower end plate 113, and the tip 4 is quenched to the hardness HRC33-36, so that the stability is good, and the damage caused by stress concentration can be avoided.

The frame 11 comprises an upper end plate 111, a support plate 112 and a lower end plate 113, the upper end and the lower end of the support plate 112 are respectively connected with the upper end plate 111 and the lower end plate 113, the support plate 112 is provided with weight reduction air holes 1121, the reflector forming air flow is not affected, the uniform heating of the mold is ensured, and the upper end plate 111 is provided with four lifting ring screws 5 or lifting ring screw holes for the hoisting transfer of the main mold assembly 1.

All designs on chassis subassembly 2 upper and lower surface have backing plate 21, and area of contact is little, and stability is good, is provided with eyebolt 5 or eyebolt hole all around for the hoist and mount of chassis subassembly 2 shifts.

When the antenna base frame assembly is used, the base frame assembly 2 is placed on a platform, the limiting assembly 3 is installed, the tip 4 is installed on the base plate 21, the main model assembly 1 is placed on the base frame assembly 2 through the limiting assembly 3 in a locating mode, antenna skin materials are paved, and the high-precision antenna reflector is formed. Compared with the traditional antenna forming die, the high-precision antenna forming die provided by the invention has the advantages that the main die body assembly adopts a unique three-point supporting structure, the processing precision of the main die body can be ensured, the detection repeatability can be ensured, meanwhile, the main die body assembly adopts invar steel materials, the linear expansion difference between the main die body assembly 1 and the carbon fiber composite material antenna is obviously reduced, and the forming precision of the high-precision antenna can be further ensured.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.