本文選題：航空發(fā)動(dòng)機(jī) + 多自由度　； 參考：《中國農(nóng)業(yè)機(jī)械化科學(xué)研究院》2015年碩士論文

【摘要】：本文結(jié)合在航空發(fā)動(dòng)機(jī)裝配過程中,通過對(duì)其姿態(tài)進(jìn)行調(diào)整,使操作者能夠站在地面上不借助梯架即能完成裝配、分解工作這一要求,設(shè)計(jì)出一種能夠?qū)崿F(xiàn)空間多個(gè)自由度運(yùn)動(dòng)的航空發(fā)動(dòng)機(jī)多自由度裝配平臺(tái)。該裝配平臺(tái)具有多運(yùn)動(dòng)自由度和可調(diào)節(jié)夾持機(jī)構(gòu),自動(dòng)化程度相對(duì)較高,屬于機(jī)電一體化設(shè)備。裝配平臺(tái)上與發(fā)動(dòng)機(jī)相連接的可調(diào)節(jié)夾持機(jī)構(gòu),能實(shí)現(xiàn)標(biāo)準(zhǔn)化和模塊化,能快速改裝,使得裝配平臺(tái)可適用于多種型號(hào)航空發(fā)動(dòng)機(jī)的主單元體及整機(jī)裝配,能夠使得航空發(fā)動(dòng)機(jī)姿態(tài)調(diào)整和裝配操作過程更安全、高效,解決航空發(fā)動(dòng)機(jī)裝配和維護(hù)操作工作強(qiáng)度大、效率低的問題。按照裝配平臺(tái)技術(shù)要求,提出了整體結(jié)構(gòu)方案,并對(duì)驅(qū)動(dòng)方式進(jìn)行了對(duì)比選擇,最終確定選擇交流伺服電機(jī)作為驅(qū)動(dòng)力來源。根據(jù)裝配平臺(tái)機(jī)械結(jié)構(gòu)組成特點(diǎn),分別對(duì)垂直升降機(jī)構(gòu)、俯仰旋轉(zhuǎn)機(jī)構(gòu)、軸心回轉(zhuǎn)機(jī)構(gòu)進(jìn)行了三維設(shè)計(jì),并根據(jù)實(shí)際工作要求確定具體尺寸以及各外購元件選型,完成了整機(jī)結(jié)構(gòu)設(shè)計(jì)以及虛擬樣機(jī)的裝配。在裝配平臺(tái)垂直升降機(jī)構(gòu)上,交流伺服電機(jī)提供動(dòng)力帶動(dòng)滾珠絲杠傳動(dòng),直線導(dǎo)軌作為直線運(yùn)動(dòng)單元,來實(shí)現(xiàn)垂直升降動(dòng)作;在俯仰旋轉(zhuǎn)機(jī)構(gòu)上,交流伺服電機(jī)雙側(cè)對(duì)稱布置,帶動(dòng)驅(qū)動(dòng)齒輪同向驅(qū)動(dòng)回轉(zhuǎn)支承,來實(shí)現(xiàn)俯仰旋轉(zhuǎn)動(dòng)作；在軸心回轉(zhuǎn)機(jī)構(gòu)上,驅(qū)動(dòng)齒輪在交流伺服電機(jī)的帶動(dòng)下驅(qū)動(dòng)C型環(huán)轉(zhuǎn)動(dòng),弧形導(dǎo)軌作為弧形運(yùn)動(dòng)單元,來實(shí)現(xiàn)軸心回轉(zhuǎn)動(dòng)作。分別建立了垂直升降機(jī)構(gòu)、俯仰旋轉(zhuǎn)機(jī)構(gòu)、軸心回轉(zhuǎn)機(jī)構(gòu)關(guān)鍵結(jié)構(gòu)件有限元模型,對(duì)每個(gè)模型按照實(shí)際情況添加約束、遠(yuǎn)程載荷以及進(jìn)行網(wǎng)格的劃分,利用有限元分析軟件Simulation對(duì)裝配平臺(tái)主要結(jié)構(gòu)件進(jìn)行了結(jié)構(gòu)靜力學(xué)分析。有限元分析結(jié)果顯示,在負(fù)載為三倍額定載荷的情況下,裝配平臺(tái)主要結(jié)構(gòu)件最大應(yīng)力值小于所選材料的屈服強(qiáng)度,確保了機(jī)構(gòu)運(yùn)動(dòng)過程中的安全性和穩(wěn)定性。針對(duì)裝配平臺(tái)實(shí)際應(yīng)用提出了“控制面板+PLC+伺服電機(jī)”的控制模式,并針對(duì)控制模式完成了控制部件的選型。本文在控制程序的設(shè)計(jì)上,根據(jù)實(shí)際功能需要,有三個(gè)特別設(shè)計(jì)：各自由度動(dòng)作均為緩起緩?fù)�；俯仰旋轉(zhuǎn)動(dòng)作包含連續(xù)模式和一鍵旋轉(zhuǎn)90。的獨(dú)立模式；機(jī)械鎖止限位機(jī)構(gòu)與輔助繼電器程序聯(lián)合作用控制俯仰旋轉(zhuǎn)方向。裝配平臺(tái)作為通用化的多自由度工裝設(shè)備,在國內(nèi)尚屬首次研制。為驗(yàn)證其是否達(dá)到實(shí)用效果,滿足各項(xiàng)功能要求,首臺(tái)樣機(jī)加工制造的同時(shí),設(shè)計(jì)制造了用于模擬加載試驗(yàn)的重量可調(diào)的加載裝置�？蛰d狀態(tài)下裝配平臺(tái)調(diào)試成功后,對(duì)其進(jìn)行了額定載荷和兩倍載荷狀態(tài)下的性能試驗(yàn)和結(jié)構(gòu)強(qiáng)度試驗(yàn),試驗(yàn)結(jié)果達(dá)到了預(yù)期要求,驗(yàn)證了裝配平臺(tái)結(jié)構(gòu)設(shè)計(jì)和控制程序設(shè)計(jì)的合理性,對(duì)于后續(xù)裝配平臺(tái)的設(shè)計(jì)和優(yōu)化具有重要的參考價(jià)值。
[Abstract]:In this paper, in the assembly process of aero engine, by adjusting the attitude of the aero engine, the operator can stand on the ground without the aid of the ladder that can complete the assembly and decompose the work. The degree and adjustable clamping mechanism, which has relatively high degree of automation, belongs to the electromechanical integration equipment. The adjustable clamping mechanism connected with the engine on the assembly platform can be standardized and modularized and can be quickly modified. The assembly platform can be applied to the main unit and the whole assembly of various types of Aero engines. The attitude adjustment and assembly operation of the air engine are more safe and efficient, and the problem of solving the high intensity and low efficiency of the aero engine assembly and maintenance operation is solved. According to the technical requirements of the assembly platform, the overall structure scheme is put forward, and the driving mode is selected and selected to determine the AC servo motor as the driving force source. According to the characteristics of the mechanical structure of the assembly platform, the three-dimensional design of the vertical lifting mechanism, the pitching rotation mechanism and the axis rotary mechanism is carried out respectively. According to the actual work requirements, the specific dimensions and the selection of the components are selected. The structure design of the whole machine and the assembly of the virtual prototype are completed. On the vertical lifting mechanism of the assembly platform, communication is carried out. The servo motor drives the ball screw drive, and the linear guide is used as a linear motion unit to achieve vertical lifting and lifting. On the pitch rotating mechanism, the AC servo motor is arranged symmetrically, driving the driving gear with the rotating support of the direction drive to realize the pitch rotation rotation; in the axis rotary mechanism, the driving gear is in the AC server. Driven by the electric motor, the C ring rotation is driven and the arc guide rail is used as an arc motion unit to realize the axis rotation. The finite element model of the vertical lifting mechanism, the pitching rotation mechanism and the key structure of the axis rotary mechanism is set up respectively, which add constraints to each model according to the actual situation, the remote load and the division of the grid. The statics analysis of the main structure parts of the assembly platform is carried out by the finite element analysis software Simulation. The finite element analysis results show that the maximum stress value of the main structure parts of the assembly platform is less than the yield strength of the selected material at the load of three times the rated load, which ensures the safety and stability of the mechanism in the movement process. In view of the practical application of the assembly platform, the control mode of "control panel +PLC+ servo motor" is put forward, and the control mode is selected for the control mode. In this paper, three special designs are designed in the design of the control program, according to the actual function needs: the action of each degree of freedom is slow and slow stop; the pitching rotation includes the continuous mode. The independent mode of the type and one key rotates 90.; the mechanical lock stop mechanism and the auxiliary relay program jointly control the direction of the pitching rotation. As a versatile multi degree of freedom tooling equipment, the assembly platform is first developed in China. In order to verify its practical effect and meet various functional requirements, the first prototype machine is manufactured in the same way. At the time, the weight adjustable loading device was designed and manufactured for the simulated loading test. The performance test and structural strength test under the rated load and two times load state were carried out after the assembly platform was successfully tested in the empty state. The test results reached the expected requirement, and the assembly platform structure design and the control program design were verified. Rationality has important reference value for the design and optimization of subsequent assembly platform.
【學(xué)位授予單位】：中國農(nóng)業(yè)機(jī)械化科學(xué)研究院
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：V263.2

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 周爍;汪俊熙;劉宜勝;張渝;;大型商用航空發(fā)動(dòng)機(jī)整機(jī)裝配工藝淺析[J];航空制造技術(shù);2014年05期

2 劉志強(qiáng);劉慧娟;王剛;王桂華;;航空發(fā)動(dòng)機(jī)工藝可靠性影響因素分析及改進(jìn)措施[J];航空科學(xué)技術(shù);2014年04期

3 孔琳;;高壓壓氣機(jī)一級(jí)工作葉片靜力矩稱稱排的工裝夾具的改進(jìn)設(shè)計(jì)[J];哈爾濱職業(yè)技術(shù)學(xué)院學(xué)報(bào);2011年05期

4 方昌德;航空發(fā)動(dòng)機(jī)百年回顧[J];燃?xì)鉁u輪試驗(yàn)與研究;2003年04期

5 周爍;孫凱;陳向華;汪俊熙;;大型商用航空發(fā)動(dòng)機(jī)整機(jī)裝配廠房起重設(shè)備配置方案[J];起重運(yùn)輸機(jī)械;2013年12期

相關(guān)碩士學(xué)位論文 前2條

1 譚剛;重型燃?xì)廨啓C(jī)吊裝和承載系統(tǒng)的有限元分析[D];湖南大學(xué);2008年

2 謝添;復(fù)合材料切割機(jī)械手的設(shè)計(jì)研究[D];武漢理工大學(xué);2013年

，

本文編號(hào)：1975801