快猫下载地址

快(kuai)貓(mao)下載地址: 雙軸跟蹤裝置(zhi)方位角齒輪系統(tong)接(jie)觸強度(du)分析

設計了(le)一種(zhong)內(nei)置(zhi)式碟式太陽(yang)能方位(wei)角(jiao)跟(gen)蹤(zong)裝(zhuang)置(zhi)，建立了(le)其方位(wei)角(jiao)齒輪傳動(dong)(dong)系(xi)統的(de)(de)UG三(san)維模型(xing)，分析并(bing)確定了(le)相應的(de)(de)約(yue)束(shu)條件及(ji)(ji)風(feng)載作用(yong)下系(xi)統的(de)(de)載荷，基于 Worbench 仿真環境對齒輪傳動(dong)(dong)系(xi)統進(jin)行(xing)了(le)有(you)限元分析，得(de)到了(le)齒輪傳動(dong)(dong)系(xi)統的(de)(de)整(zheng)體應力分布(bu)狀況及(ji)(ji)其它重(zhong)要特性(xing)，并(bing)用(yong)赫磁理論進(jin)行(xing)了(le)驗證。所作研究(jiu)未雙軸跟(gen)蹤(zong)裝(zhuang)置(zhi)齒輪傳動(dong)(dong)系(xi)統的(de)(de)設計及(ji)(ji)動(dong)(dong)態分析提供了(le)一定的(de)(de)參考和依(yi)據(ju)。......

[ 06-28 16:13 ]

快貓下載地址: 弧齒(chi)錐齒(chi)輪與擺線齒(chi)錐齒(chi)輪模型及齒(chi)面(mian)比較

  針對(dui)弧齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)等(deng)高(gao)錐(zhui)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)和擺線(xian)(xian)等(deng)高(gao)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)錐(zhui)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)這(zhe)兩種(zhong)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)制(zhi)，構(gou)建了(le)統一(yi)數(shu)學模(mo)型，并(bing)進行(xing)(xing)了(le)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)面(mian)(mian)(mian)(mian)(mian)比(bi)較(jiao)。先對(dui)這(zhe)兩種(zhong)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)制(zhi)加工刀盤結(jie)構(gou)進行(xing)(xing)了(le)分(fen)(fen)析(xi)，建立(li)了(le)統一(yi)的(de)(de)刀盤數(shu)學模(mo)型。其次(ci)，分(fen)(fen)析(xi)了(le)這(zhe)兩種(zhong)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)制(zhi)的(de)(de)加工過程，建立(li)了(le)統一(yi)的(de)(de)切齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)加工數(shu)學模(mo)型。在求(qiu)解(jie)出齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)面(mian)(mian)(mian)(mian)(mian)的(de)(de)基(ji)礎上，從齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)線(xian)(xian)螺(luo)旋角(jiao)及(ji)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)面(mian)(mian)(mian)(mian)(mian)拓撲(pu)形貌兩個方(fang)面(mian)(mian)(mian)(mian)(mian)對(dui)弧齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)錐(zhui)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)和擺線(xian)(xian)等(deng)高(gao)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)錐(zhui)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)的(de)(de)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)面(mian)(mian)(mian)(mian)(mian)幾(ji)何(he)進行(xing)(xing)了(le)比(bi)較(jiao)分(fen)(fen)析(xi)。為(wei)弧齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)銑(xian)刀粗切擺線(xian)(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)提供理(li)論指導。  弧齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)錐(zhui)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)主(zhu)要分(fen)(fen)為(wei)兩種(zhong)加工體系(xi)：端(duan)(duan)面(mian)(mian)(mian)(mian)(mian)銑(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)和端(duan)(duan)面(mian)(mian)(mian)(mian)(mian)滾齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)，與其相對(dui)應的(de)(de)齒(chi)(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)人(ren)們常稱為(wei)格(ge)里(li)森(sen)制(zhi)和奧(ao)利康制(zhi)。由于歷史原因，格(ge)里(li)森(sen)制(zhi)加工技......

[ 06-23 16:26 ]

快貓下載地(di)址: 自動消除齒輪齒條(tiao)側間隙的結構設計

  齒(chi)輪(lun)(lun)齒(chi)條(tiao)(tiao)(tiao)傳(chuan)動(dong)(dong)中往(wang)(wang)往(wang)(wang)存在齒(chi)側間隙(xi)，為傳(chuan)動(dong)(dong)機(ji)構(gou)的雙(shuang)向(xiang)(xiang)傳(chuan)動(dong)(dong)精度必須消除間隙(xi)。設計了一(yi)種通過(guo)(guo)絲(si)杠螺母(mu)機(ji)構(gou)軸向(xiang)(xiang)的相(xiang)對(dui)位移來帶動(dong)(dong)與齒(chi)輪(lun)(lun)相(xiang)嚙合(he)的兩(liang)個齒(chi)條(tiao)(tiao)(tiao)，使兩(liang)齒(chi)條(tiao)(tiao)(tiao)出現一(yi)個軸向(xiang)(xiang)的相(xiang)對(dui)位移，即兩(liang)齒(chi)條(tiao)(tiao)(tiao)錯齒(chi)，使當量(liang)齒(chi)厚增大(da)，從而自動(dong)(dong)消除齒(chi)側間隙(xi)的機(ji)構(gou)。該(gai)機(ji)構(gou)已成功應用(yong)于齒(chi)輪(lun)(lun)齒(chi)條(tiao)(tiao)(tiao)傳(chuan)動(dong)(dong)的回轉工(gong)作臺，結構(gou)簡單、傳(chuan)動(dong)(dong)精度高、效(xiao)果顯著(zhu)。  在無(wu)間隙(xi)傳(chuan)動(dong)(dong)的數控(kong)機(ji)床設備及(ji)機(ji)器人領域，經常用(yong)到齒(chi)輪(lun)(lun)齒(chi)條(tiao)(tiao)(tiao)副(fu)傳(chuan)動(dong)(dong)。但齒(chi)輪(lun)(lun)齒(chi)條(tiao)(tiao)(tiao)傳(chuan)動(dong)(dong)過(guo)(guo)程中往(wang)(wang)往(wang)(wang)存在著(zhu)齒(chi)側間隙(xi)，影響雙(shuang)向(xiang)(xiang)傳(chuan)動(dong)(dong)精度。目前(qian)消除齒(chi)輪(lun)(lun)齒(chi)條(tiao)(tiao)(tiao)機(ji)構(gou)的間隙(xi)通常采用(yong)的方法是雙(shuang)片薄齒(chi)輪(lun)(lun)錯齒(chi)調整......

[ 06-22 16:03 ]

快(kuai)貓下載地址: 齒輪彎曲(qu)疲勞(lao)彎曲(qu)應(ying)力計算

  齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)傳(chuan)動具有(you)效(xiao)率(lv)高、結構緊湊、工(gong)作可靠等優點，隨著(zhu)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)齒(chi)(chi)(chi)(chi)面硬化技(ji)術(shu)和齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)加工(gong)技(ji)術(shu)的(de)(de)迅速發展，硬齒(chi)(chi)(chi)(chi)面齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)在(zai)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)傳(chuan)動中(zhong)(zhong)得(de)到了廣泛的(de)(de)應用(yong)。當齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)重復受載(zai)后，齒(chi)(chi)(chi)(chi)根(gen)(gen)處就會產(chan)生(sheng)疲(pi)勞裂紋(wen)，并(bing)逐步(bu)擴(kuo)展，致使(shi)輪(lun)(lun)(lun)齒(chi)(chi)(chi)(chi)發生(sheng)疲(pi)勞斷(duan)裂。因此(ci)，齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)彎(wan)曲疲(pi)勞試(shi)驗(yan)廣泛應用(yong)于外的(de)(de)齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)彎(wan)曲疲(pi)勞研(yan)(yan)究中(zhong)(zhong)。齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)齒(chi)(chi)(chi)(chi)根(gen)(gen)彎(wan)曲應力(li)的(de)(de)計(ji)算(suan)作為齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)彎(wan)曲疲(pi)勞強(qiang)度試(shi)驗(yan)的(de)(de)主要(yao)內(nei)容之(zhi)一(yi)，是齒(chi)(chi)(chi)(chi)輪(lun)(lun)(lun)傳(chuan)動設計(ji)中(zhong)(zhong)的(de)(de)關鍵步(bu)驟(zou)。在(zai)齒(chi)(chi)(chi)(chi)根(gen)(gen)彎(wan)曲應力(li)研(yan)(yan)究及試(shi)驗(yan)中(zhong)(zhong)，由于對計(ji)算(suan)公式以及各種符號的(de)(de)物理(li)意義(yi)認識不清，很可能使(shi)計(ji)算(suan)及試(shi)驗(yan)結果(guo)出現(xian)錯誤。因此(ci)，準(zhun)確的(de)(de)計(ji)算(suan)齒(chi)(chi)(chi)(chi)根(gen)(gen)彎(wan)曲應力(li)顯得(de)十分重要(yao)。......

[ 06-21 16:19 ]

快貓(mao)下(xia)載地址(zhi): 齒(chi)輪減速機小波動降噪與RSSD的滾動軸承(cheng)故障特征

  齒輪(lun)減(jian)速(su)機滾動(dong)軸承(cheng)故障振(zhen)(zhen)動(dong)信(xin)(xin)(xin)(xin)(xin)號(hao)呈現出(chu)非線性、非平穩性及降(jiang)噪(zao)背(bei)景(jing)較強等特(te)點(dian)，為了有效提取故障特(te)征，提出(chu)一種(zhong)小波(bo)(bo)降(jiang)噪(zao)與(yu)共振(zhen)(zhen)稀疏(shu)分(fen)(fen)(fen)(fen)解(jie)（Resonance-based sparse signal decomposition,RSSD)相結合的(de)振(zhen)(zhen)動(dong)信(xin)(xin)(xin)(xin)(xin)號(hao)特(te)征提取技(ji)術。共振(zhen)(zhen)稀疏(shu)分(fen)(fen)(fen)(fen)解(jie)是基于品質因子可調小波(bo)(bo)變換與(yu)形態(tai)分(fen)(fen)(fen)(fen)量分(fen)(fen)(fen)(fen)析的(de)一種(zhong)新的(de)信(xin)(xin)(xin)(xin)(xin)號(hao)分(fen)(fen)(fen)(fen)解(jie)方法(fa)，與(yu)常(chang)規(gui)的(de)基于頻帶劃分(fen)(fen)(fen)(fen)的(de)信(xin)(xin)(xin)(xin)(xin)號(hao)分(fen)(fen)(fen)(fen)解(jie)方法(fa)不(bu)(bu)同，它依(yi)據(ju)信(xin)(xin)(xin)(xin)(xin)號(hao)各分(fen)(fen)(fen)(fen)量的(de)震蕩形態(tai)不(bu)(bu)同對(dui)信(xin)(xin)(xin)(xin)(xin)號(hao)進(jin)行分(fen)(fen)(fen)(fen)解(jie)。先通過(guo)小波(bo)(bo)值降(jiang)噪(zao)方法(fa)明顯減(jian)小信(xin)(xin)(xin)(xin)(xin)號(hao)中的(de)噪(zao)聲(sheng)，隨后對(dui)降(jiang)噪(zao)后的(de)信(xin)(xin)(xin)(xin)(xin)號(hao)進(jin)行共振(zhen)(zhen)稀疏(shu)分(fen)(fen)(fen)(fen)解(jie)，將信(xin)(xin)(xin)(xin)(xin)號(hao)分(fen)(fen)(fen)(fen)為......

[ 06-16 16:32 ]

快貓下載(zai)地址: 行星減速機安裝誤差對功率(lv)三分支傳動均載(zai)特性的影響

  功(gong)率(lv)(lv)三分(fen)支(zhi)傳(chuan)動系(xi)(xi)(xi)(xi)統由功(gong)率(lv)(lv)雙分(fen)支(zhi)閉鎖輪(lun)(lun)系(xi)(xi)(xi)(xi)和(he)行星輪(lun)(lun)系(xi)(xi)(xi)(xi)組成，為了揭示功(gong)率(lv)(lv)三分(fen)支(zhi)傳(chuan)動系(xi)(xi)(xi)(xi)統的(de)(de)載(zai)(zai)荷(he)分(fen)配機理，建立了功(gong)率(lv)(lv)閉環(huan)特性(xing)下的(de)(de)各齒(chi)(chi)輪(lun)(lun)扭(niu)轉(zhuan)角位移協調條(tiao)件(jian)(jian)、力(li)矩平衡條(tiao)件(jian)(jian)、彈性(xing)支(zhi)承條(tiao)件(jian)(jian)，得到系(xi)(xi)(xi)(xi)統的(de)(de)均(jun)(jun)(jun)(jun)載(zai)(zai)系(xi)(xi)(xi)(xi)數，分(fen)析了安(an)裝(zhuang)誤差、浮動、扭(niu)轉(zhuan)剛(gang)度對均(jun)(jun)(jun)(jun)衡系(xi)(xi)(xi)(xi)數的(de)(de)影響。結果表明，安(an)裝(zhuang)誤差是影響均(jun)(jun)(jun)(jun)載(zai)(zai)特性(xing)的(de)(de)主要(yao)因(yin)素(su)，誤差越(yue)大，均(jun)(jun)(jun)(jun)載(zai)(zai)性(xing)能(neng)越(yue)低；太(tai)陽輪(lun)(lun)和(he)內齒(chi)(chi)圈同時浮動時，均(jun)(jun)(jun)(jun)載(zai)(zai)系(xi)(xi)(xi)(xi)數在(zai)0.96-1.04波動，載(zai)(zai)荷(he)分(fen)配在(zai)±5%以(yi)內，可以(yi)較好(hao)的(de)(de)改善均(jun)(jun)(jun)(jun)載(zai)(zai)性(xing)能(neng)。  功(gong)率(lv)(lv)三分(fen)支(zhi)齒(chi)(chi)輪(lun)(lun)傳(chuan)動系(xi)(xi)(xi)(xi)統，無論在(zai)承載(zai)(zai)能(neng)力(li)，還是適用速度范圍上，較之......

[ 06-15 16:23 ]