本文選題：碳纖維復(fù)合材料筒 + 錐形筒�。� 參考：《大連理工大學(xué)》2015年碩士論文

【摘要】：錐形碳纖維復(fù)合材料筒是航天專用件,其孔加工質(zhì)量對(duì)航天器件的安全性能及使用性能有著重要影響,但因其尺寸較大、造型不規(guī)則、孔加工要求復(fù)雜等特點(diǎn),使得以往的手動(dòng)加工方法難以實(shí)現(xiàn)孔的高效率、高質(zhì)量加工,而現(xiàn)有的數(shù)控設(shè)備也因結(jié)構(gòu)限制,以及無(wú)法實(shí)現(xiàn)加工要求等原因無(wú)法完成這一專用件的加工。航空航天業(yè)的不斷發(fā)展對(duì)零部件加工設(shè)備提出了更高的要求,因此,有必要研制一套專用的自動(dòng)化設(shè)備來(lái)解決這一問題。本文針對(duì)在錐形復(fù)合筒上加工成一定角度的孔這一課題,研制了專用的孔加工設(shè)備,對(duì)于提高錐形復(fù)合筒的孔加工效率和加工精度具有重要意義。本文對(duì)課題的背景和意義進(jìn)行了介紹,全面分析了碳纖維復(fù)合材料加工技術(shù)和設(shè)備在國(guó)內(nèi)外的發(fā)展和應(yīng)用,在此基礎(chǔ)上從以下方面展開研究工作：對(duì)碳纖維復(fù)合材料孔加工理論進(jìn)行了分析,指出其加工過程中容易出現(xiàn)的問題。針對(duì)加工不同角度孔的要求,設(shè)計(jì)了加工單元的進(jìn)給運(yùn)動(dòng)方案,并以此展開設(shè)備布局方案的設(shè)計(jì)。設(shè)備的總體結(jié)構(gòu)可劃分為三個(gè)子系統(tǒng)：回轉(zhuǎn)定位工作臺(tái)、進(jìn)給子系統(tǒng)、孔加工子系統(tǒng)。三個(gè)子系統(tǒng)的相對(duì)運(yùn)動(dòng)按照孔加工工序合理布置,以保證加工的合理性和可靠性。進(jìn)給子系統(tǒng)包括水平進(jìn)給單元和垂直進(jìn)給單元,兩者按照直角坐標(biāo)運(yùn)動(dòng)形式布置。孔加工子系統(tǒng)是整個(gè)設(shè)備的核心結(jié)構(gòu),可實(shí)現(xiàn)孔加工組件的角度控制和臺(tái)階孔的加工。平行四桿機(jī)構(gòu)巧妙地實(shí)現(xiàn)了工件與加工單元的定位,保證了定位精度。本文基于CAD/CAE技術(shù),應(yīng)用Pro/Engineer工程軟件,從總體方案出發(fā)進(jìn)行了設(shè)備各個(gè)子系統(tǒng)的詳細(xì)結(jié)構(gòu)設(shè)計(jì),實(shí)現(xiàn)了設(shè)備各零部件的三維實(shí)體參數(shù)化建模,進(jìn)行了零部件的虛擬裝配,并通過運(yùn)動(dòng)仿真檢查干涉。應(yīng)用ANSYS/Workbench對(duì)孔加工組件進(jìn)行了模態(tài)分析,避免制孔過程中發(fā)生共振。進(jìn)行了關(guān)鍵零部件的結(jié)構(gòu)靜力學(xué)分析,并優(yōu)化了相關(guān)結(jié)構(gòu),改進(jìn)了零件尺寸,完成了設(shè)備的整體優(yōu)化,最終設(shè)計(jì)出一套用于加工錐形碳纖維復(fù)合材料筒斜孔的專用設(shè)備。
[Abstract]:The tapered carbon fiber composite tube is a special part for spaceflight. The hole processing quality has an important influence on the safety and performance of the spaceflight device. However, because of its large size, irregular shape and complex hole processing requirements, etc. It is difficult for the previous manual machining methods to achieve high efficiency and high quality machining of the holes. However, the existing numerical control equipment is unable to complete the machining of the special parts due to the structural constraints and the inability to meet the processing requirements. The continuous development of aerospace industry puts forward higher requirements for parts processing equipment. Therefore, it is necessary to develop a set of special automation equipment to solve this problem. In this paper, a special hole machining equipment is developed to improve the efficiency and precision of hole machining in conical composite cylinder. In this paper, the background and significance of the project are introduced, and the development and application of CFRP processing technology and equipment at home and abroad are analyzed. On this basis, the research work is carried out from the following aspects: the theory of hole processing of carbon fiber composites is analyzed, and the problems in the processing process are pointed out. According to the requirement of machining different angle holes, the feed motion scheme of machining unit is designed, and the design of equipment layout scheme is carried out. The overall structure of the equipment can be divided into three subsystems: rotary positioning table, feed subsystem, hole processing subsystem. The relative motion of the three subsystems is arranged reasonably according to the hole processing procedure to ensure the rationality and reliability of the machining. The feed subsystem consists of a horizontal feed unit and a vertical feed unit, which are arranged in the form of Cartesian coordinates. The hole machining subsystem is the core structure of the whole equipment, which can realize the angle control of the hole machining module and the machining of the step hole. The parallel four-bar mechanism cleverly realizes the positioning of workpiece and machining unit and ensures the positioning accuracy. Based on CAD / CAE technology and using Pro-Engineer engineering software, the detailed structure design of each subsystem of the equipment is carried out from the overall scheme, and the 3D solid parametric modeling of each part of the equipment is realized, and the virtual assembly of the parts is carried out. The interference is checked by motion simulation. ANSYS / Workbench is applied to the modal analysis of the hole machining module to avoid the resonance in the hole making process. The structural statics analysis of the key parts is carried out, and the related structures are optimized, the dimensions of the parts are improved, and the whole equipment is optimized. Finally, a set of special equipment is designed for machining the oblique holes in the tapered carbon fiber composite tubes.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：V46

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本文編號(hào)：2113368