主軸箱設(shè)計(jì)

1、陜西科技大學(xué)課程設(shè)計(jì)說明書第1頁共14頁目錄目錄第一章機(jī)床的用途及主要技術(shù)參數(shù).......................................................................2第二章方案設(shè)計(jì)......................................................................................................

2、.2第三章主傳動(dòng)設(shè)計(jì)...................................................................................................23.1驅(qū)動(dòng)源的選擇.....................................................................................................

3、...23.2轉(zhuǎn)速圖的擬定........................................................................................................33.3傳動(dòng)軸的估算.............................................................................................

4、............53.4齒輪模數(shù)的估算.....................................................................................................6第四章主軸箱展開圖的設(shè)計(jì)...................................................................................

5、..74.1設(shè)計(jì)的內(nèi)容和步驟.................................................................................................74.2有關(guān)零部件結(jié)構(gòu)和尺寸的確定............................................................................74.3各軸結(jié)構(gòu)的設(shè)計(jì).....

6、...............................................................................................94.4主軸組件的剛度和剛度損失的計(jì)算：..............................................................10第五章零件的校核.................................

7、................................................................115.1齒輪強(qiáng)度校核.......................................................................................................115.2傳動(dòng)軸撓度的驗(yàn)算：............................

8、...............................................................12第六章心得體會(huì).....................................................................................................13參考文獻(xiàn).........................................

9、............................................................................14陜西科技大學(xué)課程設(shè)計(jì)說明書第3頁共14頁到的最高轉(zhuǎn)速比同功率的直流調(diào)速電動(dòng)機(jī)高，磨損和故障也少，所以在中小功率領(lǐng)域，交流調(diào)速電動(dòng)機(jī)占有較大的優(yōu)勢，鑒于此，本設(shè)計(jì)選用交流調(diào)速電動(dòng)機(jī)。根據(jù)主軸要求的最高轉(zhuǎn)速4500rmin，最大切削功率5.5KW選擇北京數(shù)控設(shè)備廠的BESK8型交流主軸電

10、動(dòng)機(jī)，最高轉(zhuǎn)速是4500rmin。3.2轉(zhuǎn)速圖的擬定轉(zhuǎn)速圖的擬定根據(jù)交流主軸電動(dòng)機(jī)的最高轉(zhuǎn)速和基本轉(zhuǎn)速可以求得交流主軸電動(dòng)機(jī)的恒功率轉(zhuǎn)速范圍Rdp=nmaxnd=45001500=3（31）而主軸要求的恒功率轉(zhuǎn)速范圍Rnp=nmaxnd=4500150=30遠(yuǎn)大于交流主軸電動(dòng)機(jī)所能提供的恒功率轉(zhuǎn)速范圍，所以必須串聯(lián)變速機(jī)構(gòu)的方法來擴(kuò)大其恒功率轉(zhuǎn)速范圍。設(shè)計(jì)變速箱時(shí)，考慮到機(jī)床結(jié)構(gòu)的復(fù)雜程度，運(yùn)轉(zhuǎn)的平穩(wěn)性等因素，取變速箱的公比Фf等于交流

11、主軸電動(dòng)機(jī)的恒功率調(diào)速范圍Rdp，即Фf=Rdp=3，功率特性圖是連續(xù)的，無缺口和無重合的。變速箱的變速級數(shù)Z=lgRnplgRdp=lg30lg3=3.10(32)取Z=3確定各齒輪副的齒數(shù)：取S=114由u=2得Z1=38Z1′=76由u=0.67得Z2=68Z2′=46由u=0.22得Z3=94Z3′=20如取總效率η=0.75，則電動(dòng)機(jī)功率P=5.50.75=7.3kw?？蛇x用北京數(shù)控設(shè)備廠的BESK8型交流主軸電動(dòng)機(jī)，連續(xù)額定