门式纤维铺放机构的设计与研究

发布时间：2018-12-06 07:08

【摘要】：随着复合材料的性能正在逐渐被人们开发利用,其成型技术也正在被广泛的研究。纤维缠绕和纤维铺放目前是比较先进的成型技术。国外对于纤维缠绕和纤维铺放技术的研究远早于中国,而且已经将其应用在了航空航天、军事、化工等领域。国内对于纤维缠绕技术的研究目前来说相对比较成熟。纤维铺放技术的研究正处于发展阶段。由于纤维铺放技术源于纤维缠绕技术且纤维铺放技术能够避免纤维缠绕技术的许多不足,所以对于这项技术国内许多的科研单位正在广泛的关注和研究。本文设计了一台龙门式纤维丝铺放机。其主要由龙门架和纤维丝铺放头构成。根据现有的铺放理论,将纤维丝铺放头分成了十个单独的模块来分别设计。这十个模块分别是:龙门架、放带机构、导向机构、冷却机构、集合机构、压紧机构、剪切机构、重送机构、加热机构、施压机构。为了保证效率和设计简便,本文所用纤维丝束的宽度为10mm,铺放头共四条丝束,两侧丝路对称布置。一次铺放的成型宽度可以达到46mm。另外,本文对每一个机构在实现铺放头的基本功能的基础上,进行了单独的设计。在完成整体结构建模之后,本文以SolidWorks软件中的运动仿真插件为平台分析了机构的整体运动情况。在运动仿真的调整检测中,避免了干涉的发生,检测了关键点的相关参数以及验证了铺放轨迹。最后,本文对铺放头承载部件悬挂板进行力学分析,在ANSYS软件的计算之下,可以显示出在工作过程当中零件的变形情况和应力集中情况,并对其进行了重新建模处理。
[Abstract]:With the development and utilization of the properties of composites, the molding technology is also widely studied. Filament winding and fiber placement are more advanced molding technology. The research on filament winding and fiber placement abroad is far earlier than that in China, and has been applied in aerospace, military, chemical and other fields. The domestic research on filament winding technology is relatively mature at present. The research of fiber placement technology is in the developing stage. Because the fiber laying technology originates from the filament winding technology and the fiber laying technology can avoid many shortcomings of the filament winding technology, many domestic research institutes are paying more attention to this technology. A gantry fiber laying machine is designed in this paper. It is mainly made up of gantry frame and fiber laying head. According to the existing laying theory, the fiber laying head is divided into ten separate modules to design separately. The ten modules are: gantry frame, belt mechanism, guide mechanism, cooling mechanism, assembly mechanism, compression mechanism, shear mechanism, retransmission mechanism, heating mechanism, pressure mechanism. In order to ensure the efficiency and simplicity of design, the width of the fiber bundle used in this paper is 10mm, the head of the fiber bundle is four bundles, and the two sides of the filament path are symmetrical arranged. The molding width of one placement can reach 46 mm. In addition, each mechanism is designed separately on the basis of realizing the basic function of laying the head. After the whole structure modeling is completed, the whole motion of the mechanism is analyzed on the platform of the motion simulation plug-in SolidWorks software. In the adjustment and detection of motion simulation, the interference is avoided, the relevant parameters of the key points are detected and the placement track is verified. Finally, this paper carries on the mechanical analysis to the hanging plate of the bearing part of the placement head, under the calculation of ANSYS software, can show the deformation and the stress concentration of the part during the working process, and has carried on the remodel processing to it.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TB33

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