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  本文關(guān)鍵詞： 航空發(fā)動機 轉(zhuǎn)子裝配 柔性工裝 剛度、強度分析 運動學仿真　出處：《沈陽航空航天大學》2016年碩士論文　論文類型：學位論文

【摘要】：本文針對航空發(fā)動機傳統(tǒng)裝配方式,裝配專用工裝數(shù)量多,不能滿足現(xiàn)代發(fā)動機裝配中的高精度、高效率等要求,提出了基于自動裝配的航空發(fā)動機轉(zhuǎn)子柔性裝配系統(tǒng)平臺。完成了裝配系統(tǒng)平臺設(shè)計、選型、精度分析、靜力學分析、運動學建模及正反解驗證等研究,該系統(tǒng)平臺對解決航空發(fā)動機傳統(tǒng)裝配效率低、無法保證裝配質(zhì)量等問題具有重要意義。本文首先從航空發(fā)動機轉(zhuǎn)子類結(jié)構(gòu)特點、裝配工藝過程及發(fā)動機轉(zhuǎn)子部件的裝配共同點出發(fā),結(jié)合自動化裝配、工裝模塊化設(shè)計等理念,設(shè)計了一套適合于不同型號、結(jié)構(gòu)類型相似的柔性裝配系統(tǒng)平臺,分析了裝配系統(tǒng)平臺中軸輸送平臺、盤定位裝置的結(jié)構(gòu)特點、工作原理,并重點分析了裝配系統(tǒng)中典型定位部件及蝸輪蝸桿的設(shè)計和工作原理,通過分析可知,該裝配系統(tǒng)平臺可以實現(xiàn)發(fā)動機轉(zhuǎn)子類結(jié)構(gòu)的數(shù)字化裝配。其次本文在研究航空發(fā)動機轉(zhuǎn)子柔性裝配系統(tǒng)平臺的基礎(chǔ)上,對盤定位裝置的定位部分進行了運動學分析,推導了盤定位裝置的運動學正反解公式,并對其進行正解仿真和逆解驗證;基于軸輸送裝置的X、Y、Z模塊的獨立工作原理,建立了誤差模型,分析了軸輸送裝置的精度影響因素,并針對精度要求分析了保證該裝配系統(tǒng)精度的方法。同時本文還針對裝配系統(tǒng)中盤定位裝置的主要承力部件、典型定位部件,利用ANSYS Workbench軟件分別對其在不同工況時的裝配位置進行了強度分析,同時對軸輸送平臺中立柱、軸定位部件、蝸輪蝸桿等典型部件進行了剛度、強度分析,從靜力學角度驗證了裝配系統(tǒng)的可行性。最后對盤定位裝置的定位機構(gòu)進行運動學分析,建立了運動學正反解的數(shù)學模型,驗證了運動學正反解的正確性。同時,對盤定位裝置進行了仿真分析,通過分析得出定位臂的驅(qū)動滑塊及定位平臺中心點實際運動軌跡,從而指導盤定位裝置的裝配工作。本文所設(shè)計的航空發(fā)動機柔性裝配系統(tǒng)平臺在航空發(fā)動機轉(zhuǎn)子部件數(shù)字化裝配制造領(lǐng)域具有一定的創(chuàng)新性。
[Abstract]:Aiming at the traditional assembly method of aero-engine, the number of special assembly tools is large, which can not meet the requirements of high precision and high efficiency in modern engine assembly. This paper presents a flexible assembly system platform for aeroengine rotor based on automatic assembly, and completes the design, selection, precision analysis, statics analysis, kinematics modeling and forward and inverse solution verification of the assembly system platform. The system platform is of great significance to solve the problems such as low assembly efficiency and unable to guarantee assembly quality of aeroengine. Firstly, this paper starts with the characteristics of aero-engine rotor structure. Based on the common points of assembly process and engine rotor parts, combined with the concepts of automatic assembly and modular design of tooling, a set of suitable models was designed. The flexible assembly system platform with similar structure type is analyzed. The structure characteristics and working principle of the shaft conveying platform and disk positioning device in the assembly system platform are analyzed. The design and working principle of the typical positioning parts and worm gearing in the assembly system are analyzed. The assembly system platform can realize the digital assembly of engine rotor structure. Secondly, this paper studies the flexible assembly system platform of aero-engine rotor. The kinematics analysis of the positioning part of the disk positioning device is carried out, and the forward and inverse kinematics formula of the disk positioning device is deduced, and the forward solution simulation and inverse solution verification are carried out. Based on the independent working principle of the XFY Z module of the shaft conveyer, the error model is established, and the influence factors of the precision of the shaft conveying device are analyzed. The method to ensure the accuracy of the assembly system is analyzed according to the precision requirements. At the same time, this paper also aims at the main bearing parts of the central disk positioning device of the assembly system, and the typical positioning components. ANSYS Workbench software is used to analyze the strength of the assembly position under different working conditions. At the same time, the column and shaft positioning parts in the shaft conveying platform are analyzed. The stiffness and strength of typical parts such as worm gear and worm are analyzed, and the feasibility of assembly system is verified from the static point of view. Finally, the kinematics analysis of the positioning mechanism of the disc positioning device is carried out. The mathematical model of kinematics forward and inverse solution is established, and the correctness of kinematics forward and inverse solution is verified. At the same time, the disk positioning device is simulated and analyzed. Through the analysis, the driving slider of the positioning arm and the actual motion track of the center point of the positioning platform are obtained. The flexible assembly system platform designed in this paper is innovative in the field of digital assembly manufacturing of aero-engine rotor parts.
【學位授予單位】：沈陽航空航天大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：V263.2

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