鋁排折彎機(jī)的總體結(jié)構(gòu)設(shè)計,折彎,總體,整體,結(jié)構(gòu)設(shè)計 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計論文 1 摘 要 折彎機(jī)技術(shù)先進(jìn)、性能可靠。是較理想的板料成形設(shè)備之一，它廣泛用于飛機(jī)、汽 車、造船、電器機(jī)械及輕工等行業(yè)，生產(chǎn)效率高。 本畢業(yè)設(shè)計的目的是設(shè)計一種鋁排折彎機(jī)，可用電動機(jī)、柴油機(jī)作為原動機(jī)，該折 彎機(jī)采用液壓系統(tǒng)機(jī)構(gòu)，工作和操作半自動化控制，結(jié)構(gòu)簡單，體積較小，與老機(jī)型相 比，噪聲低、功率損失少、工作效率高、鋁排彎曲角度準(zhǔn)確、操作安全可靠、調(diào)節(jié)方便。 適用于板材的直角彎曲，既提高了生產(chǎn)效率和鋁排彎曲質(zhì)量，又簡化操作程序，減輕工 人勞動強(qiáng)度。 該種折彎機(jī)的設(shè)計主要涉及彎曲模具的設(shè)計和液壓系統(tǒng)的設(shè)計，折彎機(jī)工作部分是 彎曲模具，選用“V”形彎曲模具。液壓系統(tǒng)主要是為折彎機(jī)提供動力，根據(jù)彎曲工件所 需彎曲力選擇電動機(jī)、液壓泵以及液壓缸等一些液壓元件。 關(guān)鍵字：折彎機(jī)；模具；液壓系統(tǒng)；板材 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計論文 2 Abstract The Benging Machine that technologically advanced and reliable performance,is the preferred one of the sheet metal forming equments.The Bending Machine is widely used in aircraft 、 automobiles、 shipbuilding、 electrical machinery and light industries. The purpose of this graduation project is to design an aluminum row bending machines.The original motives can use electromotor and diesel engines.This bending machine uses the hydraulic system,and manipulation of semiautomatic control ,simple structure ,relatively small.Comparison with the old models,this bending machine has some advantures.Such as low noise,low power loss,high efficiency,accurate angle of aluminum row bending,safeand reliable operation and convenient regulation.For the high-angle beng of sheet metal,it not only increases the production efficiency and quality of bending aluminum row,but also simplifies the proceduresand reduces labor intensity of workers. The design of the bending machine mainly involves the designs of bending mould and hydraulic system . The work part of the bending machine is bending mould, to choose the "V"-shaped bend mould. Hydraulic system is the impetus for the bending machine. According to the bending force of the bending workpiece to choose the motor, hydraulic pump and hydraulic cylinders and other hydraulic components. Keyword: Bending machine ; mould; hydraulic system; Sheet metal 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計論文 3 目錄 前言 .............................................................1 1.折彎機(jī)的簡介 ...................................................2 1.1 折彎機(jī)的應(yīng)用 ..................................................2 1.2 折彎機(jī)的分類及組成 ............................................2 2 彎曲模具的設(shè)計 ..................................................3 2.1 分析零件的工藝性 ..............................................3 2.2 確定工藝方案 ..................................................3 2.3 進(jìn)行必要的工藝計算 ...........................................3 2.3.1 彎曲件展開長度的計算 ........................................3 2.3.2 彎曲件回彈值的計算 ..........................................4 2.3.3 彎曲力的計算 ................................................5 2.4 V 形彎曲模模具主要零部件設(shè)計 ..................................5 2.4.1 凸模的設(shè)計 ..................................................5 2.4.2 凹模的設(shè)計 ..................................................5 2.5 其它元件的選取及校核..........................................7 2.5.1 凹模固定螺釘?shù)倪x擇及強(qiáng)度校核 ................................7 2.5.2 凸模聯(lián)接銷軸的選擇及強(qiáng)度校核 ...............................9 3.液壓系統(tǒng)的設(shè)計 ................................................12 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計論文 4 3.1 設(shè)計要求及工況分析 ...........................................12 3.1.1 設(shè)計要求 ...................................................12 3.1.2 負(fù)載及運(yùn)動分析 .............................................12 3.1.3 負(fù)載圖和速度圖的繪制 .......................................13 3.2 確定液壓系統(tǒng)主要參數(shù) .........................................14 3.2.1 初選液壓缸工作壓力 .........................................14 3.2.2 計算液壓缸主要尺寸 ........................................15 3.3 液壓系統(tǒng)圖的擬定 .............................................18 3.3.1.選擇基本回路 ..............................................18 3.3.2 液壓系統(tǒng)工作原理分析 .....................................20 3.4 計算和選擇液壓元件 ...........................................22 3.4.1 確定液壓泵規(guī)格及液壓泵驅(qū)動電機(jī)的功率 .......................22 3.4.2 確定其它元件及輔助元件 ...................................23 3.5 驗(yàn)算液壓系統(tǒng)性能 ...........................................28 3.5.1 驗(yàn)算系統(tǒng)壓力損失 .........................................28 3.5.2 驗(yàn)算系統(tǒng)發(fā)熱與溫升 .......................................32 4 液壓缸的設(shè)計 .................................................33 4.1 液壓缸基本參數(shù)的確定 .......................................33 4.1.1 活塞直徑和活塞桿直徑的確定 .................................33 4.1.2 液壓缸行程 S 的確定 .........................................34 4.2 液壓缸結(jié)構(gòu)參數(shù)的確定 .......................................35 4.2.1 缸筒的設(shè)計 ...............................................35 遼寧工程技術(shù)大學(xué)畢業(yè)設(shè)計論文 5 4.2.2 缸蓋的設(shè)計 ...............................................37 4.2.3 液壓缸的聯(lián)接計算 ...........................................39 4.2.4 活塞的設(shè)計 ...............................................40 4.2.5 活塞桿的設(shè)計 .............................................41 4.2.6 活塞桿的導(dǎo)向套 ...........................................43 4.2.7 緩沖裝置的設(shè)計 ...........................................44 4.2.8 排氣閥的選用 .............................................45 4.2.9 油口的設(shè)計 .................................................45 4.3 液壓缸的主要性能參數(shù) .......................................46 4.3.1 液壓缸的輸出力 ...........................................46 4.3.2 液壓缸的儲油量 .............................................46 5 折彎機(jī)整體結(jié)構(gòu)設(shè)計 ...........................................47 6 技術(shù)經(jīng)濟(jì)分析 ...................................................48 7 結(jié)論 ...........................................................49 致謝 ............................................................50 參考文獻(xiàn) ........................................................51 附錄 A...........................................................52 附錄Ｂ 外文文獻(xiàn) .................................................59