【正文】
m m? ? ? ? ? 查 A型 V帶輪的基準(zhǔn)直徑系列表應(yīng)選大帶輪的直徑為 315mm (傳動比誤差在允許范圍內(nèi)) 驗算帶速成 100060 ndv 11??? 其中 : 1n 小帶輪轉(zhuǎn)速, r/min; 1d 小帶輪直徑, mm; ]25,5[/ ??? ??? smv ,合適。 [3]各齒輪的計算轉(zhuǎn)速 傳動組 c 中, 20/79 只需計算 z = 20 的齒輪,計算轉(zhuǎn)速為 375r/min; 66/33 只需計算 z = 33 的齒輪,計算轉(zhuǎn)速為 190/min;傳動組 b計算 z = 20 的齒輪,計算轉(zhuǎn)速為375r/min;傳動組 a應(yīng)計算 z = 28的齒輪,計算轉(zhuǎn)速為 600r/min。 于是 1 46/37ib ? , 2 32/51ib ? , 3 20/63ib ? 得軸Ⅲ上 三 齒輪的齒數(shù)分別為: 3 563。 由此也可確定加在電動機與主軸之間的定傳動比 1 4 4 0 / 6 0 0 3 6 / 1 5i ??。 在降速傳動中,防止齒輪直徑過大而使徑向尺寸常限制最小傳動比 41min ?i ,現(xiàn)取最后的變速組的最小降速傳動比為1/4;查表,可得 6 ? 。 確定傳動軸軸數(shù) 6 傳動軸軸數(shù) = 變速組數(shù) + 定比傳動副數(shù) 1 3 1 1 5? ? ? ? ?。 根據(jù)中間傳動軸變速范圍小的原則選擇結(jié)構(gòu)網(wǎng)。 故( 3) 方案最為合適???車削端面、 車削外圓柱面、 車削內(nèi)外圓錐面、 鉆中心孔、鉆孔、鏜孔、鉸孔、車削各種螺紋、 切槽和切斷、 車削特型面、滾花和盤繞彈簧等。 2 Design of variable speed drive machine 18 Abstract: Transmission refers to the movement of the power machine and power passed to the implementing agencies or the implementation of the end of the intermediate device. Up the drive links a series of drive known as the drive chain of transmission chains and their interlinkages between the transmission systems. Situation and development trend of the machine drive system overall machine performance, our present most of the enterprise machining machine tool or an ordinary lathebased, but the CNC machine tools market share increased year by year, and more use in large and medium enterprises, is also used in small and medium enterprises and even individual panies. Apart from a small amount of machine tools to integrated use of the FMS mode, mostly in the standalone operation status, and a considerable part in the inefficient use of backward, management status. The development of many countries, machine tools in the world! Highspeed, precision, plex, intelligent and green is the general trend of the CNC machine tool technology development. This topic is a variable speed lathe drive system for the study objectives, starting from the structure of the main transmission system, system architecture design, structure, grading, several aspects of the calculation of the transmission study. In order to optimize the transmission system and to improve the accuracy and stability characteristics of the transmission system to provide the necessary theoretical basis for the research of this subject, to make the machine more pact, more superior, more sophisticated production and processing Keywords: transmission chain。而世界上許多國家機床的發(fā)展正向著:高速、精密、復(fù)合、智能和綠色是數(shù)控機床技術(shù)發(fā)展的總趨勢。 畢業(yè)設(shè)計 (論文 ) 18 級變速機床傳動系統(tǒng)設(shè)計 系 別 : 機械與電子工程系 專業(yè)(班級): 11 機制(升本) 作者(學(xué)號) : 指導(dǎo)教師: 完成日期: 2020 年 05 月 20 日 蚌埠學(xué)院教務(wù)處制 蚌埠學(xué)院本科畢業(yè)設(shè)計(論文) 目 錄 摘 要 : ........................................................... 1 Abstract:........................................................... 2 1 設(shè)計要求 .......................................................... 3 2 設(shè)計目的 .......................................................... 3 3 設(shè)計步驟 .......................................................... 3 運動設(shè)計 .............................................................. 3 已知條件 ............................................................ 3 結(jié)構(gòu)分 析式 .......................................................... 3 繪制轉(zhuǎn)速圖 .......................................................... 4 繪制傳動系統(tǒng)圖 ...................................................... 7 動力設(shè)計 .............................................................. 8 帶傳動設(shè)計 ............................................................ 9 齒輪傳動設(shè)計 ......................................................... 12 第一變速組齒輪的結(jié)構(gòu)尺寸 ........................................... 12 第二變速組齒輪結(jié)構(gòu)尺寸的設(shè)計 ....................................... 15 第三變速組齒輪結(jié)構(gòu)尺寸的設(shè)計 ....................................... 18 軸的設(shè)計 ............................................................. 21 Ⅰ軸的設(shè)計計算 ..................................................... 21 Ⅱ軸結(jié)構(gòu)設(shè)計 ....................................................... 23 Ⅲ軸結(jié)構(gòu)設(shè)計 ....................................................... 25 主軸結(jié)構(gòu)設(shè)計 ......................................................... 27 軸承的校核 ........................................................... 29 Ⅰ軸上的軸承校核 ................................................... 29 Ⅱ軸上的軸承校核 ................................................... 29 III 軸上的軸承校核 ................................................. 30 主軸上的軸承校核 ................................................... 31 Ⅰ軸上的鍵的選用和強度校核 ......................................... 31 II 軸上的鍵的選用和強 度校核 ........................................ 32 Ⅲ軸上的鍵的選用和強度校核 ......................................... 32 主軸上的鍵的選用和強度校核 ......................................... 32 軸承端蓋的設(shè)計 ....................................................... 33 4 箱體的結(jié)構(gòu)設(shè)計 ................................................... 35 箱 體材料 ............................................................. 35 箱體結(jié)構(gòu) ............................................................. 35 5 潤滑與密封 ....................................................... 37 潤滑設(shè)計 ............................................................. 37 潤滑油的選擇 ......................................................... 37 6 總 結(jié) ......................................................... 38 7 致 謝 ......................................................... 39 8 參 考 文 獻(xiàn) ...................................................... 40 蚌埠學(xué)院本科畢業(yè)設(shè)計(論文) 1 18 級變速機床傳動系統(tǒng)設(shè)計 摘 要 : 傳動系統(tǒng)是指將動力機的運動和動力傳遞給執(zhí)行機構(gòu)或執(zhí)行末端件的中間裝置。但除少量機床以 FMS 模式集成使用外,大都處于單機運行狀態(tài),并且相當(dāng)部分處于使用效率不高,管理方式落后的狀態(tài)。 關(guān)鍵詞 : 傳動鏈;傳動系統(tǒng) ; 數(shù)控機床 ; FMS。 FMS. 蚌埠學(xué)院本科畢業(yè)設(shè)計(論文) 3 1 設(shè)計要求 (1) 要 求 級數(shù) Z=18, 最高轉(zhuǎn)速 1500r/min,最低轉(zhuǎn)速 30r/min. 本次設(shè)計主要參考 CA6140 (2) 用途 車床適用于加工各種軸類、套筒類、輪盤類零件上的