發(fā)布時(shí)間：2018-01-06 20:14

  本文關(guān)鍵詞：關(guān)于制造電磁鐵的線圈骨架隔磁環(huán)中骨架產(chǎn)生裂紋現(xiàn)象的研究　出處：《長(zhǎng)春工業(yè)大學(xué)》2012年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 過(guò)盈配合 接觸分析 隔磁環(huán) 周向裂紋 正交試驗(yàn)

【摘要】：液壓控制系統(tǒng)現(xiàn)已被廣泛地應(yīng)用于航空航天等領(lǐng)域。在此系統(tǒng)中,一些性能較高的電磁閥被越來(lái)越多地應(yīng)用于液壓油路的控制中。本文所研究的CT50型電磁鐵就是上述電磁控制閥的重要組成部分,與傳統(tǒng)的電磁鐵相比,不僅能夠完成以往簡(jiǎn)單的閉合和開(kāi)啟動(dòng)作,而且要求在頻繁的開(kāi)閉動(dòng)作中迅速靈活,把延遲和振動(dòng)現(xiàn)象的出現(xiàn)概率降到最低。CT50型電磁鐵的線圈骨架中由于加入了隔磁環(huán)(隔磁環(huán)的主要作用是讓磁路產(chǎn)生分路,防止磁回路短路),可以有效地避免延遲現(xiàn)象的出現(xiàn)。隔磁環(huán)使磁極上產(chǎn)生了兩個(gè)不同時(shí)為零的脈動(dòng)磁通。從而保證了磁力始終大于零,不會(huì)發(fā)生振動(dòng)現(xiàn)象。 線圈骨架的制作過(guò)程中加入隔磁環(huán),使得工藝變得更為復(fù)雜,即由原來(lái)一種金屬棒材經(jīng)機(jī)械加工制成,變?yōu)楝F(xiàn)在的線圈骨架上下部過(guò)盈配合后進(jìn)行釬焊,形成由黃銅熔焊而成的隔磁環(huán),最后經(jīng)過(guò)機(jī)械加工制成。但在實(shí)際生產(chǎn)加工中,由于在線圈骨架上下部的相關(guān)尺寸參數(shù)及過(guò)盈量選擇不當(dāng),經(jīng)過(guò)釬焊工序,機(jī)械加工成型后,經(jīng)密封性試驗(yàn)和磁粉檢測(cè)發(fā)現(xiàn),線圈骨架的隔磁環(huán)下方會(huì)出現(xiàn)線形或點(diǎn)線形周向裂紋,并且這種現(xiàn)象是成批出現(xiàn)。使得制作該線圈骨架的成品率降低,相應(yīng)地增加生產(chǎn)成本。 在軸套過(guò)盈配合中,過(guò)盈量的選取直接影響著其接觸面的Von Mises應(yīng)力狀態(tài),過(guò)盈量越大,Von Mises應(yīng)力越大的這種觀點(diǎn)是不夠準(zhǔn)確的,其中還受軸套的外徑及其他一些尺寸的影響。本文將針對(duì)線圈骨架上下部進(jìn)行有限元建模,選取不同的尺寸參數(shù)及過(guò)盈量對(duì)其采用有限元接觸分析,得出Von Mises應(yīng)力最大值。并以此為基礎(chǔ)安排正交試驗(yàn),采用極差分析技術(shù)計(jì)算分析影響Von Mises應(yīng)力最大值的主要因素,并得出最優(yōu)尺寸參數(shù),其并以此為試驗(yàn)驗(yàn)證和改善相關(guān)工藝作為理論依據(jù)。
[Abstract]:Hydraulic control system has been widely used in aerospace and other fields. Some high performance solenoid valves are more and more used in the control of hydraulic oil circuit. The CT50 electromagnet studied in this paper is an important part of the electromagnetic control valve, compared with the traditional electromagnet. Not only can complete the previous simple closing and opening actions, but also requires rapid flexibility in frequent opening and closing actions. The probability of delay and vibration phenomena is reduced to the lowest. CT50 type electromagnet coil skeleton due to the addition of magnetic isolation ring (the main role of the magnetic ring is to cause magnetic circuit separation to prevent magnetic circuit short circuit). The phenomenon of delay can be avoided effectively. Two pulsating fluxes with different zero are produced on the magnetic pole by the separated magnetic ring, which ensures that the magnetic force is always greater than zero and no vibration will occur. In the process of making the coil skeleton, the magnetic isolation ring is added, which makes the process more complicated, that is, the former metal bar is machined, and now the coil skeleton is brazed with the interference of the upper and lower parts of the coil skeleton. The magnetic ring formed by brass fusion welding was machined. But in the actual production, due to the improper selection of the relevant dimension parameters and interference amount in the upper and lower parts of the coil skeleton, the brazing process was carried out. After machining, through sealing test and magnetic particle testing, it is found that the circumferential crack of line or point line will appear under the isolated ring of the coil skeleton. And this phenomenon occurs in batches, which reduces the yield of the coil skeleton and increases the production cost accordingly. In the interference fit of the shaft sleeve, the selection of the interference quantity directly affects the Von Mises stress state of the contact surface, and the greater the interference amount is. The view that the greater the stress of Von Mises is not accurate, is also affected by the outer diameter of the shaft sleeve and some other dimensions. In this paper, the upper and lower parts of the coil skeleton are modeled by finite element method. The maximum stress of Von Mises is obtained by using finite element contact analysis with different dimension parameters and interference. The orthogonal test is arranged on this basis. The main factors affecting the maximum stress of Von Mises are calculated and analyzed by using the range analysis technique, and the optimum dimension parameters are obtained, which is used as the theoretical basis for the experimental verification and improvement of the related technology.
【學(xué)位授予單位】：長(zhǎng)春工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH137.52

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王立濤,許玲萍,張海濤,王仲玨;銑削加工殘余應(yīng)力研究的基本理論和方法[J];安徽工程科技學(xué)院學(xué)報(bào)(自然科學(xué)版);2004年02期

2 郭攀成;圓柱滾子軸承徑向工作游隙的影響因素及選擇[J];軸承;2005年08期

3 梁亞平;王惠珍;任興民;;組合筒結(jié)構(gòu)的最優(yōu)化問(wèn)題研究[J];中北大學(xué)學(xué)報(bào)(自然科學(xué)版);2007年03期

4 許小強(qiáng),趙洪倫;過(guò)盈配合應(yīng)力的接觸非線性有限元分析[J];機(jī)械設(shè)計(jì)與研究;2000年01期

5 張松,艾興,劉戰(zhàn)強(qiáng);基于有限元的高速旋轉(zhuǎn)主軸過(guò)盈配合研究[J];機(jī)械科學(xué)與技術(shù);2004年01期

6 俞漢清,李曉沛;機(jī)械零件過(guò)盈配合計(jì)算[J];機(jī)械設(shè)計(jì);1990年05期

7 魏延剛;軸轂過(guò)盈聯(lián)接的應(yīng)力分析和接觸邊緣效應(yīng)[J];機(jī)械設(shè)計(jì);2004年01期

8 張峻暉,黃紅武,熊萬(wàn)里;高速電主軸軸承配合過(guò)盈量的計(jì)算方法研究[J];機(jī)械與電子;2004年07期

9 張緒祥,瞿大中,關(guān)麗,張勇;裝配方式對(duì)圓柱過(guò)盈聯(lián)接摩擦系數(shù)影響的試驗(yàn)研究[J];機(jī)械研究與應(yīng)用;2002年02期

10 顧景江;崔昭霞;李喜梅;張勤霞;;電主軸與轉(zhuǎn)子過(guò)盈配合量的設(shè)計(jì)與校核[J];機(jī)械工程與自動(dòng)化;2008年04期

，

本文編號(hào)：1389367