【正文】 ndle can obtain any speed in the speed range to meet the processing requirements of cutting. At present, the development trend is to provide a continuously variable speed through the electrical or mechanical devices . Variable Frequency Motor conveys the power through belt drive and a set of transmission gears. The speed range of Variable Frequency Motor is usually 35 , which is difficult to meet the speed range requirements of the spindle speed。通常變頻電機調(diào)速范圍 3—5，難以滿足主軸變速要求；串聯(lián)變速齒輪則擴大了齒輪的變速范圍 。 目前，數(shù)控車床的發(fā)展趨勢是通過電氣與機械裝置進行無級變速。 主軸箱有安裝在精密軸承中的空心主軸和一系列變速齒輪組成。 本論文首先 介紹了我國數(shù)控機床發(fā)展的過程與現(xiàn)狀 ,并分析了其存在的問題 。 提供全套畢業(yè)論文圖紙，歡迎咨詢 河南 科技 大學(xué)畢業(yè)論文 題目： CK6140 數(shù)控車床主傳動系統(tǒng)設(shè)計 專業(yè)：機械設(shè)計制造及其自動化 班級： 指導(dǎo)老師： 姓名： 學(xué)號： 摘要 I 摘要 數(shù)控車床不僅能夠車外圓還能用于鏜孔、車端面、鉆孔與鉸孔。與其他種類的機床相比，車床在生產(chǎn)中使用最廣。對數(shù)控機床的 發(fā)展趨勢進行了探討 ； 并對 ck6140 數(shù)控車床主軸箱傳動系統(tǒng)進行了設(shè)計與計 算。數(shù)控車床主軸可以獲得在調(diào)速范圍內(nèi)的任意速度，以滿足加工切削要求。變頻電機通過帶傳動和變速齒輪為主軸提供動力。 本設(shè)計 的不足之處由于受到傳遞轉(zhuǎn)矩的限制而無法采用電磁離合器進行變速換擋，而采用了液壓撥叉進行變速換擋，增加了機床的復(fù)雜性，必須將數(shù)控裝置的電信號轉(zhuǎn)換為電磁閥的機械動作，從而增加了變速機構(gòu)的中間 環(huán)節(jié)，相應(yīng)地帶來更多不可靠的因素。 The transmission gears is to expand the scope of a variablespeed to meet the speed range of the spindle . Disadvantages of this design because of the transmission torque limit and cannot use electromagic clutch to shift gears, and adopts the hydraulic fork are shifting, machine tools increased plexity, we must convert electrical signals into mechanical actions of numerical control device of electromagic valve, thereby increasing the intermediate link transmission mechanism, accordingly bring more unreliable factors. Key words: CNC lathes, a continuously variable speed , transmission Systerm, Transmission mechanism 目錄 目錄 摘要 ............................................................................................................................... I Abstract ........................................................................................................................ II 第一章 緒論 ............................................................................................................ 1 課題背景及目的 ................................................................................................ 1 國內(nèi)外研究現(xiàn)狀及發(fā)展趨勢 ............................................................................... 2 數(shù)控系統(tǒng)的發(fā)展趨勢 ................................................................................... 2 我國數(shù)控車床的研究現(xiàn)狀及發(fā)展趨勢 ........................................................... 2 課題研究內(nèi)容及方法 ......................................................................................... 6 課題研究內(nèi)容 .............................................................................................. 6 研究方法 ..................................................................................................... 6 論文構(gòu)成 ........................................................................................................... 6 第 二章 主傳動系統(tǒng)的設(shè)計 .................................................................................... 7 主傳動系統(tǒng)的設(shè)計要求 ...................................................................................... 7 總體設(shè)計 ........................................................................................................... 7 擬定傳動 方案 .............................................................................................. 7 選擇電機 ..................................................................................................... 8 主運動調(diào)速范圍的確定、計算各軸計算轉(zhuǎn)速、功率和轉(zhuǎn)矩 ......................... 11 轉(zhuǎn)速圖 ...................................................................................................... 13 第三章 傳動系統(tǒng)零部件設(shè)計 .............................................................................. 14 傳動皮帶的設(shè)計和選定 .................................................................................... 14 V 帶傳動設(shè)計 ............................................................................................. 14 皮帶輪結(jié)構(gòu)設(shè)計 .............................................................................................. 16 對三角皮帶帶輪設(shè)計的要求： ................................................................... 16 皮帶輪的材料 ............................................................................................ 16 結(jié)構(gòu)尺寸的設(shè)計 ........................................................................................ 17 軸系部件的結(jié)構(gòu)設(shè)計 ....................................................................................... 18 Ⅰ軸結(jié)構(gòu)設(shè)計與校核 ................................................................................. 18 ⅠⅡ軸齒輪組的設(shè)計 ................................................................................. 21 Ⅱ軸結(jié)構(gòu)設(shè)計 ............................................................................................ 25 ⅡⅢ軸齒輪組的設(shè)計 ................................................................................. 26 第四章 主軸結(jié)構(gòu)設(shè)計 .......................................................................................... 31 主軸的要求 ..................................................................................................... 31 主軸軸 承選擇 .................................................................................................. 32 主軸的設(shè)計與校核 ........................................................................................... 33 主軸驅(qū)動與控制 .............................................................................................. 37 第五章 結(jié)論 .......................................................................................................... 41 參考文獻 ................................................................................................................ 42 致謝 ......................................................................................................................