阅读说明：本技术 混杂树脂基体三维编织碳纤维复合材料及其在机械臂中的应用 (Three-dimensional woven carbon fiber composite material with hybrid resin matrix and application of three-dimensional woven carbon fiber composite material in mechanical arm ) 是由 朱波 曹伟伟 乔琨 王永伟 宋函默 赵大涌 于 2021-02-03 设计创作，主要内容包括：本发明公开了混杂树脂基体三维编织碳纤维复合材料及其在机械臂中的应用,复合材料为中空管状结构,管壁由内至外依次为内部缠绕刚性结构层、中间三维编织耐冲击功能层、表面叠层预埋复合层；所述内部缠绕刚性结构层由缠绕的高模量碳纤维与热固性树脂复合形成；所述中间三维编织耐冲击功能层由热塑性树脂与纤维立体织物复合形成,所述纤维立体织物是由高强度碳纤维和高模量碳纤维混杂编织形成的三维立体结构；所述表面叠层预埋复合层由平面织物结构的碳纤维织物预浸热固性树脂形成。该复合材料作为机械臂,不仅重量较轻,而且可以满足机械臂使用过程中的设备运行零震动的需求问题。(The invention discloses a three-dimensional woven carbon fiber composite material with a mixed resin matrix and application thereof in a mechanical arm, wherein the composite material is in a hollow tubular structure, and the tube wall sequentially comprises an internal winding rigid structure layer, a middle three-dimensional woven impact-resistant functional layer and a surface lamination pre-embedded composite layer from inside to outside; the internal winding rigid structure layer is formed by compounding wound high-modulus carbon fibers and thermosetting resin; the middle three-dimensional woven impact-resistant functional layer is formed by compounding thermoplastic resin and a fiber three-dimensional fabric, and the fiber three-dimensional fabric is a three-dimensional structure formed by weaving high-strength carbon fibers and high-modulus carbon fibers in a mixed manner; the surface lamination pre-embedded composite layer is formed by pre-impregnating carbon fiber fabric with a plane fabric structure with thermosetting resin. The composite material is used as the mechanical arm, so that the weight is light, and the requirement problem of zero vibration of equipment operation in the use process of the mechanical arm can be met.)

1. A three-dimensional braided carbon fiber composite material with a hybrid resin matrix is characterized in that the composite material is of a hollow tubular structure, and a pipe wall sequentially comprises an internal winding rigid structure layer, a middle three-dimensional braided impact-resistant functional layer and a surface lamination pre-embedded composite layer from inside to outside;

the internal winding rigid structure layer is formed by compounding wound high-modulus carbon fibers and thermosetting resin;

the middle three-dimensional woven impact-resistant functional layer is formed by compounding thermoplastic resin and a fiber three-dimensional fabric, and the fiber three-dimensional fabric is a three-dimensional structure formed by weaving high-strength carbon fibers and high-modulus carbon fibers in a mixed manner;

the surface lamination pre-embedded composite layer is formed by pre-impregnating carbon fiber fabric with a plane fabric structure with thermosetting resin.

2. The hybrid resin matrix three-dimensional woven carbon fiber composite of claim 1, wherein the high modulus carbon fibers in the inner winding rigid structure layer are M40, M40J, M55, M55J, M60 or M60J;

or the thermosetting resin is epoxy resin, unsaturated polyester resin, phenolic resin, urea resin, organic silicon resin or thermosetting polyurethane resin.

3. The hybrid resin matrix three-dimensional weave carbon fiber composite of claim 1 wherein the internal winding rigid structure layer is comprised of high modulus carbon fibers intermingled with ceramic fibers and then compounded with thermosetting resin;

or, the winding mode is hoop winding, spiral winding or longitudinal winding.

4. The three-dimensional woven carbon fiber composite material with a hybrid resin matrix according to claim 1, wherein the preparation method comprises the steps of preparing an internal winding rigid structure layer by using a mold, and then sequentially preparing an intermediate three-dimensional woven impact-resistant functional layer and a surface lamination pre-embedded composite layer by using the internal winding rigid structure layer as a core mold;

or, winding the internal winding rigid structure layer by adopting a die with a radial section of square, round or polygonal in the preparation process;

or the fiber three-dimensional fabric is subjected to transition weaving through any one or more three-dimensional weaving structures of three-dimensional four-direction, three-dimensional five-direction, three-dimensional six-direction and three-dimensional seven-direction.

5. The hybrid resin matrix three-dimensional woven carbon fiber composite of claim 1, wherein the high strength carbon fibers in the intermediate three-dimensional woven impact-resistant functional layer are T300, T700, T800 or T1000;

or the thermoplastic resin is polyethylene, polypropylene, polycarbonate, thermoplastic polyester, polyphenylene sulfide, polyether ether ketone, polyether ketone, polyamide or polyimide;

or the content of the thermoplastic resin in the middle three-dimensional woven impact-resistant functional layer is 40-60% by mass percent.

6. The three-dimensional woven carbon fiber composite material with a hybrid resin matrix according to claim 1, wherein the surface-laminated pre-embedded composite layer is formed by laminating and laying after weaving the carbon fibers pre-impregnated with the thermosetting resin into a plane fabric;

or, the carbon fiber fabric with the surface laminated with the pre-embedded composite layer is formed by weaving plain, twill or satin.

7. The three-dimensional woven carbon fiber composite material with hybrid resin matrix as claimed in claim 1, wherein the carbon fiber with the surface laminated pre-embedded composite layer is high-strength carbon fiber;

or the content of the thermosetting resin in the surface lamination pre-embedded composite layer is 40-60% by mass percent.

8. Use of the hybrid resin matrix three-dimensional woven carbon fiber composite material according to any one of claims 1 to 7 in a mechanical arm.

9. A robot arm, characterized in that it is prepared from the hybrid resin matrix three-dimensionally woven carbon fiber composite material according to any one of claims 1 to 7.

10. Use of a robot arm according to claim 9 in an industrial robot.

Technical Field

The invention relates to an automatic composite material mechanical equipment component, in particular to a hybrid resin matrix three-dimensional woven carbon fiber composite material and application thereof in a mechanical arm.

Background

The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.

With the improvement of the automation degree of industrial equipment, the application requirements of industrial robots and intelligent industrial mechanical equipment are continuously improved. Industrial robots and mechanical intelligence components are products that integrate the comprehensive disciplines of mechanics, materials, electronics, control automation and computer intelligence technologies, and have been widely used in various fields such as machine manufacturing, bridge construction, chemical production, mineral mining, defense and military, and even aerospace. Industrial intelligent mechanical equipment replaces human beings to carry out heavy, single and various precise work, and has unprecedented great significance in the aspects of reducing the labor intensity of the human beings and improving the production efficiency and the automation level. In recent years, due to the continuous improvement of precision requirements of application of industrial intelligent mechanical equipment, the requirements on self weight reduction and the like are also continuously improved, the traditional metal material limits the capability improvement of the current industrial intelligent equipment, and the requirement on light weight is also subjected to more and more light columns internationally. On the premise of meeting the requirement of telling high-precision basic performance of industrial intelligent equipment, the composite material of metal materials is replaced, and the method is a necessary way for reducing energy consumption and improving equipment functionality.

The mechanical arm is one of main function executing parts of the industrial intelligent robot, is also a main bearing component of the robot and the intelligent equipment, and has an important role in quickly and efficiently completing action instructions and completing intelligent actions with high precision for the robot. According to the inventor of the invention, the existing domestic mechanical arm is basically made of metal and aluminum alloy, the self weight of the metal brings about the problem of instability of assembly and equipment action, and in order to reduce the weight to a great extent and simultaneously control the requirements of nearly zero vibration and the like of the mechanical arm in the action process of high-precision equipment, the carbon fiber composite material is adopted as the main substitute raw material of the metal material, so that the research in the field is focused at present. However, the inventor researches and finds that the problem of zero vibration requirement of equipment operation in the use process of the mechanical arm is difficult to meet when the carbon fiber composite material is used as the material of the mechanical arm due to the problems of the material of the carbon fiber, the structural design of the fiber monofilament and the like.

Disclosure of Invention

In order to solve the defects of the prior art, the invention aims to provide a hybrid resin matrix three-dimensional woven carbon fiber composite material and application thereof in a mechanical arm.

In order to achieve the purpose, the technical scheme of the invention is as follows:

on one hand, the hybrid resin matrix three-dimensional woven carbon fiber composite material is of a hollow tubular structure, and the pipe wall sequentially comprises an internal winding rigid structure layer, an intermediate three-dimensional woven impact-resistant functional layer and a surface lamination pre-embedded composite layer from inside to outside;

the internal winding rigid structure layer is formed by compounding wound high-modulus carbon fibers and thermosetting resin;

the middle three-dimensional woven impact-resistant functional layer is formed by compounding thermoplastic resin and a fiber three-dimensional fabric, and the fiber three-dimensional fabric is a three-dimensional structure formed by weaving high-strength carbon fibers and high-modulus carbon fibers in a mixed manner;

the surface lamination pre-embedded composite layer is formed by pre-impregnating carbon fiber fabric with a plane fabric structure with thermosetting resin.

The internal winding rigid structure layer is arranged on the inner layer of the composite material pipe wall, and the integral rigid support structure of the mechanical arm can be provided to resist deformation in the application process. According to the invention, the middle three-dimensional braided impact-resistant functional layer is arranged in the middle layer of the composite material pipe wall, so that the mechanical arm integrally has high rigidity and impact resistance which are not possessed by laminated composite materials. The surface lamination pre-embedded composite layer is arranged on the outer layer of the composite material pipe wall, and a structural body for assembling metal parts can be pre-embedded at a specific position, so that the mechanical arm part and other metal structural parts can be conveniently assembled.

On the other hand, the hybrid resin matrix three-dimensional woven carbon fiber composite material is applied to a mechanical arm.

In a third aspect, the mechanical arm is prepared from the hybrid resin matrix three-dimensional woven carbon fiber composite material.

In a fourth aspect, a use of the above robot arm in an industrial robot.

The invention has the beneficial effects that:

the invention provides a hybrid resin matrix three-dimensional woven carbon fiber composite material with a hollow tubular structure for an industrial robot mechanical arm. The inner layer of the composite material is an internal winding rigid structure layer, and deformation in the application process can be resisted by compounding wound high-modulus carbon fibers and thermosetting resin, so that the composite material is prevented from vibrating in the movement process. The middle layer of the composite material is a middle three-dimensional woven impact-resistant functional layer, high-strength and high-modulus carbon fibers are adopted for hybrid weaving to form a three-dimensional structure layer, and thermoplastic resin and the fiber three-dimensional fabric are compounded at the same time, so that the mechanical arm integrally has high rigidity and impact resistance which are not possessed by laminated composite materials. The composite material outer layer is a surface laminated pre-embedded composite layer, a structural body for assembling metal parts can be pre-embedded at a specific position, and the mechanical arm part and other metal structural parts can be conveniently assembled for use.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic cross-sectional structure view of a hybrid resin matrix three-dimensional woven carbon fiber composite robot arm according to embodiment 2 of the present invention;

the composite layer comprises a rigid structure layer wound inside 1, an impact-resistant functional layer woven in the middle of 2 in a three-dimensional mode, and a composite layer pre-embedded in a surface lamination mode 3.

Detailed Description

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The high-modulus carbon fiber means a carbon fiber having a modulus of not less than 290 GPa.

The high-strength carbon fiber refers to carbon fiber with tensile strength not lower than 3530 MPa.

In view of the defect of vibration of the existing mechanical arm in the using process, the invention provides a hybrid resin matrix three-dimensional woven carbon fiber composite material and application thereof in the mechanical arm.

The invention provides a typical embodiment of a hybrid resin matrix three-dimensional woven carbon fiber composite material, which is a hollow tubular structure, wherein a pipe wall sequentially comprises an internal winding rigid structure layer, a middle three-dimensional woven impact-resistant functional layer and a surface lamination pre-embedded composite layer from inside to outside;

the internal winding rigid structure layer is formed by compounding wound high-modulus carbon fibers and thermosetting resin;

the middle three-dimensional woven impact-resistant functional layer is formed by compounding thermoplastic resin and a fiber three-dimensional fabric, and the fiber three-dimensional fabric is a three-dimensional structure formed by weaving high-strength carbon fibers and high-modulus carbon fibers in a mixed manner;

the surface lamination pre-embedded composite layer is formed by pre-impregnating carbon fiber fabric with a plane fabric structure with thermosetting resin.

The internal winding rigid structure layer is arranged on the inner layer of the composite material pipe wall, and the integral rigid support structure of the mechanical arm can be provided to resist deformation in the application process. According to the invention, the middle three-dimensional braided impact-resistant functional layer is arranged in the middle layer of the composite material pipe wall, so that the mechanical arm integrally has high rigidity and impact resistance which are not possessed by laminated composite materials. The surface lamination pre-embedded composite layer is arranged on the outer layer of the composite material pipe wall, and a structural body for assembling metal parts can be pre-embedded at a specific position, so that the mechanical arm part and other metal structural parts can be conveniently assembled.

In some examples of this embodiment, the high modulus carbon fiber in the inner winding rigid structural layer is M40, M40J, M55, M55J, M60, M60J, or the like.

In some examples of this embodiment, the inner winding rigid structure layer is formed by winding a mixture of high modulus carbon fibers and ceramic fibers and then compounding the mixture with a thermosetting resin.

In some embodiments of this embodiment, the winding is hoop winding, spiral winding, or longitudinal winding. Wherein the winding angle of the circumferential winding is controlled within the range of 85-90 degrees, the winding angle of the spiral winding is controlled within the range of 45-70 degrees, and the winding angle of the longitudinal winding is not more than 25 degrees.

In some examples of this embodiment, the thermosetting resin is any one of epoxy resin, unsaturated polyester resin, phenolic resin, urea resin, silicone resin, thermosetting polyurethane resin, and the like, and is not limited to the above.

In some examples of this embodiment, the preparation method includes preparing the internal winding rigid structure layer by using a mold, and then sequentially preparing the intermediate three-dimensional woven impact-resistant functional layer and the surface lamination pre-embedded composite layer by using the internal winding rigid structure layer as a core mold.

In some examples of this embodiment, the inner winding rigid structure layer is wound using a die having a radial cross-section of square, circular, or polygonal shape during the manufacturing process. The thickness of the winding layer can be flexibly determined according to design requirements, thermosetting resin with the glue content of 40-60% is impregnated in the winding process, and finally the winding layer is cured and molded through a designable specific process.

In some examples of this embodiment, the three-dimensional fiber fabric is woven in a transition manner by any one or more three-dimensional weaving structures of three-dimensional four-direction, three-dimensional five-direction, three-dimensional six-direction and three-dimensional seven-direction.

In some examples of this embodiment, the high modulus carbon fibers in the intermediate three-dimensional woven ballistic resistant functional layer are M40, M40J, M55, M55J, M60, M60J, or the like.

In some examples of this embodiment, the high strength carbon fibers in the intermediate three-dimensional woven impact-resistant functional layer are T300, T700, T800, T1000, or the like.

In the middle three-dimensional woven impact-resistant functional layer, the mixing proportion of two types of high-modulus carbon fibers and high-strength carbon fibers is flexibly adjusted according to design requirements.

In some examples of this embodiment, the thermoplastic resin is polyethylene, polypropylene, polycarbonate, thermoplastic polyester, polyphenylene sulfide, polyetheretherketone, polyetherketone, polyamide, polyimide, or the like.

In some examples of the embodiment, the content of the thermoplastic resin in the middle three-dimensional woven impact-resistant functional layer is 40 to 60 mass percent.

In some examples of this embodiment, carbon fibers pre-impregnated with thermosetting resin are woven into a flat woven fabric and then layered to form a surface-laminated pre-embedded composite layer.

In some examples of this embodiment, the carbon fiber fabric of the surface-laminated pre-buried composite layer is formed by weaving in a plain, twill or satin weave.

In some embodiments of this embodiment, the carbon fiber of the surface-laminated pre-embedded composite layer is a high-strength carbon fiber.

In some embodiments of the embodiment, the content of the thermosetting resin in the surface lamination pre-embedded composite layer is 40-60% by mass.

In another embodiment of the invention, the application of the hybrid resin matrix three-dimensional woven carbon fiber composite material in a mechanical arm is provided.

In a third embodiment of the invention, a mechanical arm is provided, which is prepared from the hybrid resin matrix three-dimensional weaving carbon fiber composite material.

In a fourth embodiment of the present invention, there is provided an application of the robot arm described above to an industrial robot.

In order to make the technical solutions of the present invention more clearly understood by those skilled in the art, the technical solutions of the present invention will be described in detail below with reference to specific embodiments.

Example 1

A three-dimensional structure carbon fiber composite material mechanical arm mixed with a resin matrix is composed of the following parts: the inner part is wound with a rigid structure layer, the middle three-dimensional weaving impact-resistant functional layer and the surface is laminated with a pre-embedded composite layer. The internal winding rigid structure layer is formed by winding M40 carbon fiber and silicon carbide ceramic fiber in a ratio of 1:1 in a mixed mode, epoxy resin with the content of mixed fiber impregnating resin being 40% is impregnated in the winding process, the rigid structure layer is prepared in a hoop winding mode, the hoop winding angle is 87 degrees, then the rigid structure layer is cured for 2 hours at the temperature of 120 ℃ and then formed, and finally the rigid structure layer is wound into a square pipe section with the thickness of 5 mm. After the preparation of the internal winding rigid structure layer is finished, the internal winding rigid structure layer is taken as a core mould to be processed on the external part of the external three-dimensional weaving impact-resistant function layer, T300 carbon fiber and M40J carbon fiber in a ratio of 2:1 are mixed to weave in a three-dimensional four-way three-dimensional structure, the three-dimensional fabric is formed and then compounded with polyethylene resin, the intermediate three-dimensional weaving impact-resistant function layer with the resin content of 60% and the thickness of 5mm is finally prepared, after the completion of the three-dimensional weaving impact-resistant function layer, T300 carbon fiber lamination layers of plain weave fabric structures pre-impregnated with epoxy resin are processed on the external part of the three-dimensional weaving impact-resistant function layer, the lamination number is.

In the use process of the mechanical arm, the equipment does not generate vibration.

The maximum stress and displacement data of the mechanical arm in the using process of the embodiment are shown in table 1.

Table 1 carbon fiber three-dimensional braided composite material mechanical arm maximum stress and maximum displacement

Parameter(s)	Carbon fiber three-dimensional woven composite material mechanical arm
		Maximum stress/MPa	15.9
Maximum displacement/mm	7.5

Example 2

A three-dimensional structure carbon fiber composite material mechanical arm mixed with a resin matrix is shown in figure 1 and specifically comprises the following parts: the inner part is wound with a rigid structure layer 1, the middle three-dimensional weaving impact-resistant functional layer 2 and the surface lamination pre-embedded composite layer 3. The internal winding rigid structure layer is formed by winding M60J carbon fiber and alumina ceramic fiber in a ratio of 3:1 in a mixed mode, unsaturated polyester resin with the content of hybrid fiber impregnating resin being 55% is impregnated in the winding process, the rigid structure layer is prepared by spiral winding, the winding angle of the spiral winding is 60 degrees, then the rigid structure layer is cured for 6 hours at the temperature of 129 ℃ and then molded, and finally the rigid structure layer is wound into a circular tube-shaped section with the thickness of 4 mm. After the preparation of the internal winding rigid structure layer is finished, the internal winding rigid structure layer is taken as a core mould to process an intermediate three-dimensional weaving impact-resistant functional layer on the outside, T1000 carbon fiber and M55 carbon fiber in a ratio of 4:1 are mixed to weave in a three-dimensional five-direction three-dimensional structure, the three-dimensional fabric is formed and then compounded with polypropylene resin, the intermediate three-dimensional weaving impact-resistant functional layer with the resin content of 50% and the thickness of 6mm is finally prepared, after the completion of the three-dimensional weaving impact-resistant functional layer, T800 carbon fiber lamination of a twill fabric structure pre-impregnated with thermosetting polyurethane resin is processed on the outside of the three-dimensional weaving impact-resistant functional layer, the number of the lamination is 6.

In the use process of the mechanical arm, the equipment does not generate vibration.

The maximum stress and displacement data of the mechanical arm in the using process of the embodiment are shown in table 2.

TABLE 2 carbon fiber three-dimensional braided composite material mechanical arm maximum stress and maximum displacement

Parameter(s)	Carbon fiber three-dimensional woven composite material mechanical arm
		Maximum stress/MPa	22.5
Maximum displacement/mm	4.5

Example 3

A three-dimensional structure carbon fiber composite material mechanical arm mixed with a resin matrix is composed of the following parts: the inner part is wound with a rigid structure layer, the middle three-dimensional weaving impact-resistant functional layer and the surface is laminated with a pre-embedded composite layer. The internal winding rigid structure layer is formed by winding M55J carbon fiber and silicon nitride ceramic fiber in a ratio of 5:1 in a mixed mode, the mixed fiber is impregnated with phenolic resin with the resin content of 50% in the winding process, the rigid structure layer is prepared in a longitudinal winding mode, the winding angle of longitudinal winding is 20 degrees, then the rigid structure layer is cured for 2 hours at the temperature of 250 ℃ and then molded, and finally the rigid structure layer is wound into a hexagonal section with the thickness of 3 mm. After the preparation of the internal winding rigid structure layer is finished, the internal winding rigid structure layer is taken as a core mould to be processed on the external part of the external three-dimensional weaving impact-resistant function layer, T700 carbon fiber and M60 carbon fiber in a ratio of 1.5:1 are mixed to weave in a three-dimensional six-direction three-dimensional structure, the three-dimensional fabric is formed and then compounded with thermoplastic polyester resin, the intermediate three-dimensional weaving impact-resistant function layer with the resin content of 50% and the thickness of 3mm is finally prepared, after the completion of the three-dimensional weaving impact-resistant function layer, T800 carbon fiber laminated layers of a satin fabric structure pre-impregnated with urea-formaldehyde resin are processed on the external part of the three-dimensional weaving impact-resistant function layer, the.

In the use process of the mechanical arm, the equipment does not generate vibration.

The maximum stress and displacement data of the mechanical arm in the using process of the embodiment are shown in table 3.

TABLE 3 carbon fiber three-dimensional braided composite material mechanical arm maximum stress and maximum displacement

Parameter(s)	Carbon fiber three-dimensional woven composite material mechanical arm
		Maximum stress/MPa	16.7
Maximum displacement/mm	6.6

Example 4

A three-dimensional structure carbon fiber composite material mechanical arm mixed with a resin matrix is composed of the following parts: the inner part is wound with a rigid structure layer, the middle three-dimensional weaving impact-resistant functional layer and the surface is laminated with a pre-embedded composite layer. The internal winding rigid structure layer is formed by winding M60 carbon fiber and silicon carbide ceramic fiber in a ratio of 1.2:1 in a mixed mode, the mixed fiber is impregnated with organic silicon resin with the resin content of 45% in the winding process, the rigid structure layer is prepared in a hoop winding mode, the winding angle of the hoop winding is 86 degrees, then the hoop winding is cured for 2 hours at the temperature of 150 ℃ and formed, and finally the rigid structure layer is wound into a square pipe section with the thickness of 5 mm. After the preparation of the internal winding rigid structure layer is finished, the internal winding rigid structure layer is taken as a core mould to be processed on the external middle three-dimensional weaving impact-resistant function layer, T1000 carbon fiber and M60J carbon fiber in a ratio of 1:1 are mixed to weave in a three-dimensional seven-direction three-dimensional structure, the three-dimensional fabric is formed and then compounded with polyamide resin, the middle three-dimensional weaving impact-resistant function layer with the resin content of 55% and the thickness of 5mm is finally prepared, after the completion of the three-dimensional weaving impact-resistant function layer, T1000 carbon fiber lamination of a satin weave fabric structure pre-soaked with thermosetting polyurethane resin is processed on the external part of the three-dimensional weaving impact-resistant function layer, the lamination number is 15.

In the use process of the mechanical arm, the equipment does not generate vibration.

The maximum stress and displacement data of the mechanical arm in the using process of the embodiment are shown in table 4.

TABLE 4 carbon fiber three-dimensional braided composite material mechanical arm maximum stress and maximum displacement

Parameter(s)	Carbon fiber three-dimensional woven composite material mechanical arm
		Maximum stress/MPa	14.2
Maximum displacement/mm	8.1

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.