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高枝锯机构仿真及关键结构优化

发布时间:2018-02-05 19:02

  本文关键词: 高枝锯 机构运动学仿真 结构优化 线弹性静力学分析 虚拟样机 出处:《江苏大学》2017年硕士论文 论文类型:学位论文


【摘要】:高位树枝修枝锯是园林绿化的常用工具之一,随着对城市绿化要求的不断提高,传统的高枝油锯已不能满足修剪高位树枝的要求,因此设计一款体积小、重量轻、噪音小、耗能低、携带轻便的电动高枝锯是十分必要的。本文针对这一现状,对高枝锯机构设计及关键部件优化等问题进行研究,主要的研究内容如下:(1)首先通过对高枝锯国内外研究现状的分析,结合企业委托设计目标,指出了研究的目的及意义,并提出了高枝锯产品的设计方法,规范同类产品的设计流程。(2)通过对传统高枝锯实际工况的分析,提出了新型高枝锯的基本设计要求;根据对所给方案的动力学仿真结果确定了最优机构设计目标,并利用参数化设计方法对最优方案进行了参数化定型。(3)根据高枝锯工况提出了高枝锯锯片的设计要求和设计目标,通过对锯片进行线弹性静力学分析,为后续的锯片结构优化和稳定性分析奠定了力学基础。(4)通过建立高枝锯整机装配有限元模型,并对其整个机构进行线弹性静力学仿真,利用分析结果对高枝锯的结构性能进行了优化。(5)利用虚拟样机设计技术,构建了高枝锯锯割树枝工况的虚拟样机,提出了高枝锯虚拟样机性能的评测指标,对本文所设计的高枝锯工作性能进行评价,并设计了高枝锯性能测试的实验方案,为产品生产和测试的可行性提供了依据。
[Abstract]:High branch pruning saw is one of the common tools for garden greening. With the increasing requirement of urban greening, the traditional high branch saw can not meet the requirements of pruning high branches, so the design of a small size. It is necessary to carry a portable electric high branch saw with light weight, low noise, low energy consumption. In this paper, the mechanism design and key components optimization of high branch saw are studied. The main research contents are as follows: (1) first of all, through the analysis of domestic and international research status of high branch saw, combined with the design goal of enterprise entrustment, the purpose and significance of the research are pointed out, and the design method of high branch saw product is put forward. Based on the analysis of the actual working conditions of the traditional high branch saw, the basic design requirements of the new type high branch saw are put forward. According to the dynamic simulation results of the given scheme, the optimal design goal of the mechanism is determined. The design requirements and design objectives of the high branch saw blade are put forward according to the working conditions of the high branch saw, and the linear elastic static analysis of the saw blade is carried out by means of the linear elastic static analysis of the saw blade. For the subsequent optimization of saw blade structure and stability analysis laid a mechanical foundation. Through the establishment of a high branch saw machine assembly finite element model, and the entire mechanism of linear elastic static simulation. The structure and performance of high branch saw were optimized by using the analysis results. The virtual prototype of cutting branch of high branch saw was constructed by using virtual prototype design technology. The performance evaluation index of the virtual prototype of high branch saw is put forward, the working performance of the high branch saw designed in this paper is evaluated, and the experimental scheme of testing the performance of the high branch saw is designed. It provides the basis for the feasibility of product production and test.
【学位授予单位】:江苏大学
【学位级别】:硕士
【学位授予年份】:2017
【分类号】:TU986.32

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