本文選題：汽車減震器 + 缸筒�。� 參考：《遼寧工業(yè)大學(xué)》2015年碩士論文

【摘要】：汽車減震器通過使車架與車身的震動迅速衰減，進而改善汽車行駛的平順性和舒適性能。汽車減震器作為汽車的主要配件，也是易損件，其中的減震器筒是決定其壽命的關(guān)鍵零件之一，而減震器筒的缸底和缸筒一體且缸底為半球形時缸筒點的壽命最高、工藝性最好。以往減震器缸筒封頭的加工方法多為鑄造、螺紋連接、焊接結(jié)構(gòu)和滾壓成型等，這些方法雖然可以實現(xiàn)缸筒和缸底的連接，但不能保證加工質(zhì)量或加工效率低，基于此，本文研究一種新型的熱旋壓裝置，可實現(xiàn)缸筒封頭的高效高質(zhì)量加工，同時本文對加工設(shè)備的關(guān)鍵技術(shù)參數(shù)的確定進行了研究。 本文敘述了旋壓設(shè)備的國內(nèi)外發(fā)展情況，，確定了熱旋壓設(shè)備的研究方案，設(shè)計了實現(xiàn)動作的液壓和氣壓系統(tǒng)，完成了實現(xiàn)熱旋壓功能的各個機械機構(gòu)設(shè)計，并對夾具裝置和旋壓裝置主要參數(shù)的確定進行了數(shù)值仿真。 機械設(shè)計部分完成了運用機械接合無桿氣缸實現(xiàn)自動上下料的設(shè)計；對夾緊裝置進行了選擇，選取了精密夾頭對工件進行夾緊；確定了對工件的加熱方式為電磁加熱，實現(xiàn)了加熱過程的高效節(jié)能；最后考慮到機械傳動方式的定位精度及穩(wěn)定性較好，采用機械傳動的方式進行模具進給，且夾具與模具同時同速、同向旋轉(zhuǎn)以保證液化物盡可能依附于成型內(nèi)胎及芯軸上，保證其按胎具及芯軸形狀成型；完成了繪制熱旋壓設(shè)備實現(xiàn)各個動作的氣壓、液壓系統(tǒng)的原理圖。 金屬熱處理部分結(jié)合金屬熱處理的相關(guān)理論及金屬的金相組織圖，確定了無縫鋼管的加熱溫度及溫度延其分布的曲線；并對加熱后的無縫鋼管用噴射保護氣體氮氣的方式進行冷卻降溫。 數(shù)值仿真部分完成了對用以制作汽車減震器氣缸缸筒的無縫鋼管進行噴射氮氣冷卻降溫的熱-結(jié)構(gòu)-流體耦合分析，得到了氮氣噴射的最佳溫度、速度及時間；應(yīng)用塑性成型的數(shù)值模擬方法實現(xiàn)對復(fù)雜成型問題進行數(shù)值模擬，分析成型過程中的應(yīng)力應(yīng)變分布及其變化規(guī)律。
[Abstract]:The vehicle shock absorber attenuates the vibration of the frame and body quickly, and then improves the ride comfort and comfort of the vehicle. The shock absorber is one of the key parts that determine its life, and the cylinder has the highest life when the cylinder bottom and cylinder bottom are integrated and the cylinder bottom is hemispherical. The craftsmanship is the best. In the past, most of the machining methods of cylinder head of shock absorber were casting, thread connection, welding structure and rolling molding, etc. Although these methods can realize the connection between cylinder and cylinder bottom, they can not guarantee the machining quality or the machining efficiency is low. In this paper, a new type of hot spinning device is studied, which can realize the high efficiency and high quality machining of cylinder head. At the same time, the determination of the key technical parameters of the processing equipment is studied in this paper. This paper describes the development of spinning equipment at home and abroad, determines the research scheme of hot spinning equipment, designs the hydraulic and pneumatic system to realize the action, and completes the design of each mechanical mechanism to realize the hot spinning function. The main parameters of fixture and spinning device are simulated numerically. In the part of mechanical design, the design of automatic loading and unloading by using mechanical jointless cylinder is completed, the clamping device is selected, the precise chuck is selected to clamp the workpiece, and the heating mode of the workpiece is determined as electromagnetic heating. Finally, considering the good positioning accuracy and stability of the mechanical transmission mode, the die feed is carried out by the mechanical transmission mode, and the fixture is at the same speed as the mould. The liquid is rotated in the same direction to ensure that the liquefaction is attached to the inner tube and core shaft as much as possible, and it is shaped according to the shape of the tire and the core shaft. The principle diagram of the pressure and hydraulic system of the hot spinning equipment to realize each action is completed. Combined with the theory of metal heat treatment and metallographic structure of metal, the heating temperature and temperature distribution curve of seamless steel tube are determined. The heating seamless steel pipe is cooled and cooled by injection of nitrogen gas. In the part of numerical simulation, the thermo-structure-fluid coupling analysis of the seamless steel tube used to make cylinder cylinder of automobile shock absorber is completed, and the optimum temperature, velocity and time of nitrogen injection are obtained. The numerical simulation method of plastic forming is used to simulate the complex forming problem, and the stress and strain distribution and its variation in the forming process are analyzed.
【學(xué)位授予單位】：遼寧工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：U463.335.1;TG305

【參考文獻】

相關(guān)期刊論文 前10條

1 趙琳瑜;韓冬;張立武;李增輝;王北平;楊延濤;龔軍善;;旋壓成形技術(shù)和設(shè)備的典型應(yīng)用與發(fā)展[J];鍛壓技術(shù);2007年06期

2 周貴祿;李文農(nóng);李岷;;大直徑奧氏體不銹鋼無縫鋼管的試制[J];鋼管;2012年03期

3 高斌,宋小文,盧斌,郝勇剛,胡樹根,俞小莉;發(fā)動機氣缸體螺紋聯(lián)接強度有限元分析[J];工程設(shè)計學(xué)報;2005年04期

4 吳松林;李德強;邵飛;鄧春鋒;;氣瓶多道次熱旋壓收口成形工藝的數(shù)值模擬研究[J];材料開發(fā)與應(yīng)用;2012年04期

5 侯清海;王永軍;王俊彪;楊旭東;李振強;朱莉;;普通車床改造成數(shù)控旋壓機的關(guān)鍵技術(shù)研究[J];機床與液壓;2006年10期

6 王賓;秦建平;王福利;李鴻斌;;不銹鋼管冷旋壓熱力耦合有限元模擬[J];精密成形工程;2011年05期

7 張薇;安曉衛(wèi);;發(fā)動機活塞與缸體的非線性接觸分析[J];機械設(shè)計與制造;2009年01期

8 范志強;高德平;覃志賢;姜濤;;20號鋼的沖擊拉伸力學(xué)性能試驗研究[J];燃氣渦輪試驗與研究;2006年04期

9 姜桂榮;熱旋封頭工藝的研究與開發(fā)[J];熱加工工藝;2003年02期

10 馮志猛;;封頭的熱旋壓加工及應(yīng)用[J];壓力容器;2006年01期

本文編號：1861548