喜歡就充值下載吧。。。資源目錄里展示的全都有，，下載后全都有,,請(qǐng)放心下載，==================================
【QQ：3278627871 可咨詢交流】
喜歡就充值下載吧。。。資源目錄里展示的全都有，，下載后全都有,,請(qǐng)放心下載，==================================
【QQ：3278627871 可咨詢交流】
喜歡就充值下載吧。。。資源目錄里展示的全都有，，下載后全都有,,請(qǐng)放心下載，==================================
【QQ：3278627871 可咨詢交流】
摘 要 自 20 世紀(jì) 80 年代中期以來(lái)，快速成型技術(shù)的發(fā)展與應(yīng)用越來(lái)越廣 泛和深入， 光固化成型機(jī)的需求也越來(lái)越大。由此，本論文針對(duì) cps250 型激光 快速成型機(jī)的 機(jī)械結(jié)構(gòu)進(jìn)行了設(shè)計(jì)，包括：1、X-Y 掃描機(jī)構(gòu)；2、Z 軸升降機(jī)構(gòu)； 3、刮刀機(jī)構(gòu)， 并且對(duì)其中的部分結(jié)構(gòu)進(jìn)行了改進(jìn)。X-Y 方向的平面掃描運(yùn)動(dòng)和 刮刀的水平運(yùn)動(dòng)由 原來(lái)的精密同步帶傳動(dòng)改成精密滾珠絲杠傳動(dòng)，使其在行程 較長(zhǎng)時(shí)不出現(xiàn)抖動(dòng)，有 利于保證掃描精度，運(yùn)動(dòng)穩(wěn)定。采用直線步進(jìn)電機(jī)直接 連接滾珠絲杠，響應(yīng)更加快 速準(zhǔn)確，同時(shí)因無(wú)中間部件，使機(jī)械結(jié)構(gòu)簡(jiǎn)單化， 精度較高。 通過(guò)對(duì)立體激光快速成型機(jī)機(jī)械結(jié)構(gòu)的設(shè)計(jì)，使得其運(yùn)動(dòng)和傳動(dòng)更加合理 和平 穩(wěn)，進(jìn)而使其在生產(chǎn)過(guò)程中能夠更好的進(jìn)行生產(chǎn)。 關(guān)鍵詞：快速成型機(jī)；掃描機(jī)構(gòu)；快速成型；傳動(dòng)；結(jié)構(gòu)設(shè)計(jì) I ABSTRACT This article specifically for three-dimensional modeling of light-cured structural design of mechanical systems. X-Y scanning normally used to screw drive. Through the motor rotation, with another even reached the screw shaft, through to the X and Y to the two motors of rotation to achieve XY to scan; Z to the table, also by the screw and a rail. Z to the table by the extension units, columns, screw composition, its transmission is through the same motor rotation axis is to pass even reached the screw by screw to achieve the rotation of the table move up or down. Through the three-dimensional modeling of light-cured in the design and mechanical systems, making their campaigns and drive more reasonable and stable, then in the production process so that it can better carry out production. Key word: SLA；Scanning agencies ；Rapid Prototyping；Transmission；Structure design 2 目 錄 摘 要 .............................................................................................................I ABSTRACT.......................................................................................................II 第 1 章 緒 論 .................................................................................................1 1.1 快速原型技術(shù)簡(jiǎn)介 ....................................................................................................1 1.1.1 RPM 的基本構(gòu)思 ..........................................................................................1 1.1.2 幾種典型的快速成型技術(shù) ............................................................................2 1.1.3 各種成型方法簡(jiǎn)介及對(duì)比 .............................................................................3 1.2 快速成型精度概述 ....................................................................................................3 1.3 快速成型機(jī) SLA 技術(shù)原理 ......................................................................................5 1.4 快速成型機(jī) SLA 國(guó)內(nèi)外現(xiàn)有技術(shù)水平 ..................................................................6 1.5 快速成型機(jī) SLA 應(yīng)用領(lǐng)域 ......................................................................................6 1.6 本次設(shè)計(jì)的主要工作 ...............................................................................................7 1.6.1 主要設(shè)計(jì)工作 ................................................................................................7 1.6.2 設(shè)計(jì)參數(shù) ........................................................................................................7 1.6.3 設(shè)計(jì)思路及主要問(wèn)題 ....................................................................................7 第 2 章 XY 方向設(shè)計(jì)計(jì)算 ................................................................................9 2.1 設(shè)計(jì)任務(wù) ....................................................................................................................9 2.1.1 設(shè)計(jì)參數(shù) ........................................................................................................9 2.1.2 方案的分析、比較、論證 ............................................................................9 2.2 脈沖當(dāng)量和傳動(dòng)比的確定 .....................................................................................10 2.2.1 脈沖當(dāng)量的確定 ..........................................................................................10 2.2.2 傳動(dòng)比的確定 ..............................................................................................10 2.2.3 確定步進(jìn)電機(jī)步距角 ..................................................................................10 2.3 絲杠的選型及計(jì)算 .................................................................................................11 2.3.1 計(jì)算絲杠受力 ..............................................................................................11 2.3.2 滾珠絲杠螺母副的選型和校核 ..................................................................11 2.4 導(dǎo)軌的選型及計(jì)算 .................................................................................................15 2.4.1 初選導(dǎo)軌型號(hào) ..............................................................................................15 2.4.2 計(jì)算滾動(dòng)導(dǎo)軌副的距離額定壽命 ..........................................................16L 3 2.5 步進(jìn)電機(jī)的選擇 .....................................................................................................16 2.5.1 傳動(dòng)系統(tǒng)等效轉(zhuǎn)動(dòng)慣量計(jì)算 ......................................................................17 2.5.2 所需轉(zhuǎn)動(dòng)力矩計(jì)算 ......................................................................................18 2.6 本章小結(jié) .................................................................................................................21 第 3 章 Z 方向設(shè)計(jì)計(jì)算 .................................................................................22 3.1 Z 方向工作臺(tái)設(shè)計(jì) ..................................................................................................22 3.1.1 設(shè)計(jì)任務(wù) .......................................................................................................22 3.1.2 設(shè)計(jì)參數(shù) ......................................................................................................22 3.1.3 方案的分析、比較、論證 ..........................................................................22 3.2 脈沖當(dāng)量和傳動(dòng)比的確定 .....................................................................................23 3.2.1 脈沖當(dāng)量的確定 ..........................................................................................23 3.2.2 傳動(dòng)比的確定 ..............................................................................................23 3.2.3 確定步進(jìn)電機(jī)步距角 ..................................................................................23 3.3 絲杠的選型及計(jì)算 .................................................................................................24 3.3.1 計(jì)算絲杠受力 ..............................................................................................24 3.3.2 滾珠絲杠螺母副的選型和校核 ..................................................................24 3.4 步進(jìn)電機(jī)的選擇 .....................................................................................................28 3.4.1 傳動(dòng)系統(tǒng)等效轉(zhuǎn)動(dòng)慣量計(jì)算 ......................................................................28 3.4.2 所需轉(zhuǎn)動(dòng)力矩計(jì)算 ......................................................................................29 3.5 本章小結(jié) ..................................................................................................................31 第 4 章 刮刀系統(tǒng)設(shè)計(jì) .....................................................................................32 4.1 刮板的選擇 .............................................................................................................32 4.2 刮板的材料和移動(dòng)速度對(duì)涂層質(zhì)量的影響 .........................................................33 4.3 本章小結(jié) .................................................................................................................34 第 5 章 PLC 控制系統(tǒng) ....................................................................................35 5.1 步進(jìn)電機(jī)的簡(jiǎn)介 ......................................................................................................35 5.2 步進(jìn)電機(jī)的工作原理及特性 ..................................................................................35 5.3 PLC 簡(jiǎn)單介紹 ..........................................................................................................35 5.3.1 為大量實(shí)際應(yīng)用而開發(fā)的特殊功能 ...........................................................35 5.3.2 網(wǎng)絡(luò)和數(shù)據(jù)通信 ...........................................................................................35 5.3.3 其它功能 .......................................................................................................36 4 5.4 控制原則 .................................................................................................................36 5.5 控制方法 ..................................................................................................................36 5.5.1 行程控制 ......................................................................................................36 5.5.2 進(jìn)給速度控制 ..............................................................................................37 5.5.3 進(jìn)給方向控制 ..............................................................................................37 5.6 本章小結(jié) .................................................................................................................37 結(jié) 論 ...............................................................................................................38 參考文獻(xiàn) ...........................................................................................................39 致 謝 ...............................................................................................................41