本文選題：虛擬裝配 + 裝配序列規(guī)劃　； 參考：《合肥工業(yè)大學(xué)》2017年碩士論文

【摘要】：虛擬裝配技術(shù)是虛擬制造的重要組成部分,虛擬裝配主要研究?jī)?nèi)容有:裝配信息模型的建立、裝配工藝的規(guī)劃以及干涉檢測(cè)等方面。裝配序列規(guī)劃是裝配工藝規(guī)劃的核心內(nèi)容之一,在很大程度上影響了產(chǎn)品設(shè)計(jì)制造的效率和質(zhì)量,本文對(duì)利用遺傳算法的裝配序列規(guī)劃進(jìn)行了深入的研究。在醫(yī)療顯示器支架的研發(fā)過程中應(yīng)用虛擬裝配技術(shù),能夠在產(chǎn)品設(shè)計(jì)階段發(fā)現(xiàn)裝配中的問題,并對(duì)產(chǎn)品模型進(jìn)行改進(jìn),從而提高了產(chǎn)品研發(fā)的效率、降低了生產(chǎn)成本、提高了企業(yè)的競(jìng)爭(zhēng)力。本文主要做了如下的研究工作:(1)描述了虛擬裝配技術(shù)在國(guó)內(nèi)外的研究現(xiàn)狀,并對(duì)裝配序列規(guī)劃的發(fā)展做了總結(jié)。對(duì)虛擬裝配技術(shù)的概念、分類以及關(guān)鍵技術(shù)進(jìn)行研究,簡(jiǎn)單論述了裝配路徑規(guī)劃和裝配序列規(guī)劃的方法。(2)對(duì)醫(yī)療顯示器支架進(jìn)行設(shè)計(jì)并建立三維CAD模型,對(duì)其模型進(jìn)行層次劃分,以便進(jìn)行裝配序列規(guī)劃,并詳細(xì)說明其各組成部分的結(jié)構(gòu)。(3)對(duì)干涉矩陣的生成進(jìn)行詳細(xì)的說明,并簡(jiǎn)單介紹了遺傳算法。在干涉矩陣的基礎(chǔ)上,采用遺傳算法對(duì)裝配序列進(jìn)行優(yōu)化,以裝配工具改變的次數(shù)和裝配方向改變的次數(shù)為依據(jù),建立相應(yīng)的適應(yīng)度函數(shù),并選擇適當(dāng)?shù)倪z傳算子,對(duì)產(chǎn)品進(jìn)行裝配序列規(guī)劃。(4)以醫(yī)療顯示器支架為研究對(duì)象,采用上述方法對(duì)其裝配序列進(jìn)行優(yōu)化,并得到可行的最優(yōu)裝配序列。(5)用達(dá)索公司的DELMIA軟件構(gòu)建虛擬裝配環(huán)境,并基于最優(yōu)裝配序列,采用拆卸法對(duì)醫(yī)療顯示器支架進(jìn)行裝配仿真,對(duì)其裝配路徑進(jìn)行規(guī)劃,并進(jìn)行碰撞干涉檢測(cè)以發(fā)現(xiàn)裝配中存在的問題。最后,對(duì)醫(yī)療顯示器支架的物理樣機(jī)進(jìn)行裝配實(shí)驗(yàn),以驗(yàn)證虛擬裝配的合理性和可行性。
[Abstract]:Virtual assembly technology is an important part of virtual manufacturing. The main research contents of virtual assembly include the establishment of assembly information model, assembly process planning and interference detection. Assembly sequence planning is one of the core contents of assembly process planning, which to a great extent affects the efficiency and quality of product design and manufacture. In this paper, the assembly sequence planning using genetic algorithm is deeply studied. The application of virtual assembly technology in the research and development of medical display bracket can find the problems in the product design stage and improve the product model, thus improving the efficiency of product development and reducing the production cost. Improved the competitiveness of the enterprise. In this paper, the following research work is done: 1) the research status of virtual assembly technology at home and abroad is described, and the development of assembly sequence planning is summarized. The concept, classification and key technologies of virtual assembly technology are studied. The method of assembly path planning and assembly sequence planning is briefly discussed. The model is divided into layers for assembly sequence planning, and the structure of each component is explained in detail. The generation of interference matrix is described in detail, and genetic algorithm is briefly introduced. On the basis of interference matrix, genetic algorithm is used to optimize the assembly sequence. According to the times of assembly tool change and assembly direction change, the fitness function is established, and the appropriate genetic operator is selected. The assembly sequence planning of the product. (4) taking the medical display bracket as the research object, the assembly sequence is optimized by the above method, and the feasible optimal assembly sequence is obtained. Finally, the virtual assembly environment is constructed with the DELMIA software of Dassault Company. Based on the optimal assembly sequence, the disassembly method is used to simulate the assembly of the medical display bracket, the assembly path is planned, and the collision interference detection is carried out to find the problems in the assembly. Finally, the physical prototype of medical display bracket was assembled to verify the rationality and feasibility of virtual assembly.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TH77;TG95

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