本文關(guān)鍵詞：飛機(jī)結(jié)構(gòu)加強(qiáng)板零件成形工藝方法的研究　出處：《沈陽航空航天大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 加強(qiáng)板 液力成形 拉深成形 有限元模擬

【摘要】：加強(qiáng)板是飛機(jī)結(jié)構(gòu)系統(tǒng)的重要組成部分,是飛機(jī)飛行安全的重要保障。目前,制造廠加工加強(qiáng)板零件普遍采用的是傳統(tǒng)落壓成形工藝。該傳統(tǒng)工藝存在生產(chǎn)效率低、廢品率高和零件精度低等缺點(diǎn)。本文針對(duì)飛機(jī)結(jié)構(gòu)加強(qiáng)板零件的成形特點(diǎn)以及傳統(tǒng)的落壓成形工藝的缺點(diǎn),采用有限元數(shù)值模擬方法對(duì)其進(jìn)行了系統(tǒng)的工藝分析,提出了液力成形工藝和剛性模拉深成形工藝兩種新的工藝解決方案,并驗(yàn)證了其可行性,最終成形零件質(zhì)量參照了航空工業(yè)標(biāo)準(zhǔn)HB6470-1990的要求。對(duì)于液力成形工藝方法,研究結(jié)果表明,由于零件結(jié)構(gòu)的特殊性,在液力成形后零件局部形成的圓角半徑遠(yuǎn)遠(yuǎn)大于3毫米,需要增加校形工序。校形結(jié)束后,零件減薄率為33.25%,產(chǎn)生破裂的可能性很高。對(duì)于剛性模拉深成形工藝方法,提出了單次拉深成形和二次拉深成形方案。研究結(jié)果表明,單次拉深成形結(jié)束后,零件減薄率達(dá)到30%,產(chǎn)生破裂的可能性依舊很高。采用二次拉深成形方案,即設(shè)計(jì)出過渡模具,過渡模具保持了原零件的型面曲度,增加了其凸、凹模圓角半徑和拉深深度,使得過渡模具有儲(chǔ)料的作用,第一次拉深成形后得到半成品,第二次拉深成最終零件。二次拉深成形結(jié)束后,零件減薄率為27.12%,符合了標(biāo)準(zhǔn)的要求。因此,二次拉深成形方案可以確保零件的成形質(zhì)量。本文又通過仿真模擬研究了工藝參數(shù)和工藝切口對(duì)成形零件質(zhì)量的影響,并優(yōu)化了工藝參數(shù),為實(shí)際生產(chǎn)過程提供了有效的參考依據(jù)。
[Abstract]:Reinforcement plate is an important part of aircraft structure system and an important guarantee of aircraft flight safety. The traditional blanking forming process is widely used in the manufacturing plant, which has low production efficiency. The paper aims at the forming characteristics of the aircraft structural strengthening plate parts and the shortcomings of the traditional falling forming process. The finite element numerical simulation method is used to analyze the process systematically. Two new process solutions, hydroforming process and rigid die drawing process, are put forward, and their feasibility is verified. Finally, the quality of the formed parts is referred to the requirements of aviation industry standard HB6470-1990. For the hydraulic forming process, the research results show that because of the special structure of the parts. After hydroforming, the radius of the corner formed locally is much larger than 3 mm, so it is necessary to increase the calibration procedure. After the calibration, the thinning rate of the part is 33.25%. For the rigid die drawing process, single drawing and secondary drawing are proposed. The results show that the single drawing is finished. The reduction rate of the part is up to 30%, and the possibility of producing rupture is still very high. Using the secondary drawing forming scheme, the transition die is designed. The transition die keeps the original part surface curvature and increases its protruding. The corner radius and drawing depth of the die make the transition die have the function of material storage. The semi-finished product is obtained after the first drawing, and the final part is formed by the second drawing. After the second drawing, the final part is obtained. The thinning rate of the parts is 27.12, which meets the requirements of the standard. The secondary drawing scheme can ensure the forming quality of the parts. In this paper, the effects of process parameters and process cuts on the quality of forming parts are studied by simulation, and the process parameters are optimized. It provides an effective reference for the actual production process.
【學(xué)位授予單位】：沈陽航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：V262.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 苑世劍;劉偉;徐永超;;板材液壓成形技術(shù)與裝備新進(jìn)展[J];機(jī)械工程學(xué)報(bào);2015年08期

2 郎利輝;孫志瑩;孔德帥;王永銘;;復(fù)雜薄壁航空整體鈑金件的液壓成形技術(shù)[J];鍛壓技術(shù);2014年10期

3 張曉斌;孫宇;樊紅梅;賈魯寧;;板料成形壓邊力控制技術(shù)研究現(xiàn)狀及發(fā)展趨勢(shì)[J];鍛壓技術(shù);2007年06期

4 謝暉,鐘志華;基于CAE和神經(jīng)網(wǎng)絡(luò)的壓邊力優(yōu)化[J];機(jī)械工程學(xué)報(bào);2004年07期

5 史剛;拉延筋技術(shù)[J];模具技術(shù);2004年03期

6 王東哲,婁臻亮,張永清,何丹農(nóng);板材變壓邊力拉深成形方盒件數(shù)值模擬[J];上海交通大學(xué)學(xué)報(bào);2001年10期

7 徐丙坤,施法中;板料沖壓成形數(shù)值模擬中等效拉延筋模型的建立與實(shí)現(xiàn)[J];鍛壓技術(shù);2000年06期

8 郎利輝,康達(dá)昌,張士宏,戴昆,王仲仁,苑世劍;Numerical simulation of cup hydrodynamic deep drawing[J];Transactions of Nonferrous Metals Society of China;2000年05期

9 周照耀,李振南,阮鋒,康達(dá)昌,程秋謀;正向充液變薄拉深工藝的研究[J];鍛壓技術(shù);1997年02期

10 楊玉英;;盒形件成形機(jī)理的探討[J];鍛壓技術(shù);1989年06期

，

本文編號(hào)：1416964