快猫下载地址

快貓下載地址: 各向同性移動并聯機器(qi)人的動力學分析與仿真(zhen)

提出(chu)(chu)了一種各向同(tong)性(xing)移(yi)動(dong)(dong)(dong)并聯機(ji)(ji)器(qi)人(ren)。先(xian)對該機(ji)(ji)器(qi)人(ren)的運(yun)動(dong)(dong)(dong)學(xue)問(wen)題進行了分(fen)(fen)析，建立其位置、速度(du)和(he)(he)加速度(du)方(fang)程(cheng)；然后以“庫倫+黏性(xing)”摩擦模型為基礎，推(tui)導(dao)出(chu)(chu)傳(chuan)動(dong)(dong)(dong)滑塊和(he)(he)球鉸所(suo)受的摩擦力/力矩方(fang)程(cheng)；在考慮(lv)摩擦的情況下，利用(yong)牛頓(dun)-歐拉法分(fen)(fen)別建立了傳(chuan)動(dong)(dong)(dong)滑塊、分(fen)(fen)支運(yun)動(dong)(dong)(dong)鏈和(he)(he)機(ji)(ji)器(qi)人(ren)動(dong)(dong)(dong)平臺的動(dong)(dong)(dong)力學(xue)模型，揭(jie)示了分(fen)(fen)支傳(chuan)動(dong)(dong)(dong)力和(he)(he)加在動(dong)(dong)(dong)平臺上的外力之(zhi)間的映射關系(xi)；基于(yu)ADAMS軟件和(he)(he)MATLAB編程(cheng)對機(ji)(ji)器(qi)人(ren)動(dong)(dong)(dong)力學(xue)進行仿真(zhen)(zhen)，繪(hui)制出(chu)(chu)傳(chuan)動(dong)(dong)(dong)滑塊所(suo)受的傳(chuan)動(dong)(dong)(dong)力變化曲(qu)線，兩種仿真(zhen)(zhen)結果(guo)一致，驗證了理論分(fen)(fen)析的真(zhen)(zhen)確性(xing)和(he)(he)有效性(xing)。該機(ji)(ji)構(gou)可用(yong)于(yu)農業(ye)機(ji)(ji)器(qi)人(ren)、工業(ye)機(ji)(ji)器(qi)人(ren)的末端執(zhi)行機(ji)(ji)構(gou)。......

[ 11-20 16:18 ]

快(kuai)貓下載地址: 一種精密平臺的柔(rou)性(xing)鉸鏈(lian)設計和有限元驗證

  精(jing)(jing)密(mi)(mi)平(ping)臺(tai)(tai)是(shi)一(yi)種(zhong)能(neng)夠(gou)提供微(wei)位移的(de)(de)(de)工作(zuo)(zuo)平(ping)臺(tai)(tai)，柔(rou)性(xing)(xing)鉸(jiao)(jiao)(jiao)鏈(lian)(lian)(lian)作(zuo)(zuo)為傳動機(ji)構(gou)(gou)，在(zai)精(jing)(jing)密(mi)(mi)平(ping)臺(tai)(tai)設計(ji)中廣泛應(ying)(ying)用(yong)(yong)(yong)。柔(rou)性(xing)(xing)鉸(jiao)(jiao)(jiao)鏈(lian)(lian)(lian)是(shi)決定平(ping)臺(tai)(tai)性(xing)(xing)能(neng)的(de)(de)(de)關鍵，柔(rou)性(xing)(xing)鉸(jiao)(jiao)(jiao)鏈(lian)(lian)(lian)的(de)(de)(de)結(jie)構(gou)(gou)形式和尺寸參數影響著定位精(jing)(jing)度的(de)(de)(de)高(gao)低。設計(ji)了一(yi)種(zhong)疊加支鏈(lian)(lian)(lian)形式的(de)(de)(de)柔(rou)性(xing)(xing)鉸(jiao)(jiao)(jiao)鏈(lian)(lian)(lian)結(jie)構(gou)(gou)，推導(dao)了基于該柔(rou)性(xing)(xing)鉸(jiao)(jiao)(jiao)鏈(lian)(lian)(lian)的(de)(de)(de)二維精(jing)(jing)密(mi)(mi)平(ping)臺(tai)(tai)的(de)(de)(de)工作(zuo)(zuo)剛(gang)度、耦(ou)(ou)合(he)剛(gang)度、耦(ou)(ou)合(he)系數、鉸(jiao)(jiao)(jiao)鏈(lian)(lian)(lian)應(ying)(ying)力(li)等性(xing)(xing)能(neng)指(zhi)標的(de)(de)(de)解(jie)析公(gong)式，并采用(yong)(yong)(yong)了有(you)限元軟件對性(xing)(xing)能(neng)指(zhi)標進行(xing)了驗證。仿真表明，兩者具有(you)良好的(de)(de)(de)一(yi)致性(xing)(xing)，為應(ying)(ying)用(yong)(yong)(yong)于精(jing)(jing)密(mi)(mi)平(ping)臺(tai)(tai)的(de)(de)(de)柔(rou)性(xing)(xing)鉸(jiao)(jiao)(jiao)鏈(lian)(lian)(lian)設計(ji)提供參考。  隨(sui)著納米(mi)技術的(de)(de)(de)興起及(ji)快(kuai)速(su)發展，精(jing)(jing)密(mi)(mi)平(ping)臺(tai)(tai)這種(zhong)能(neng)夠(gou)提供高(gao)定位精(jing)(jing)度的(de)(de)(de)微(wei)位移工......

[ 11-15 15:20 ]

快貓下載地址: 平面包絡內嚙合蝸桿傳動(dong)母平面傾角的分析(xi)研究

?  母平(ping)面傾(qing)(qing)角(jiao)對平(ping)面包(bao)絡(luo)內(nei)嚙(nie)合(he)蝸(gua)桿(gan)傳(chuan)動(dong)的(de)(de)嚙(nie)合(he)性能具(ju)有(you)較大影響，對確定(ding)平(ping)面包(bao)絡(luo)內(nei)嚙(nie)合(he)蝸(gua)桿(gan)傳(chuan)動(dong)裝置的(de)(de)優參(can)數具(ju)有(you)決定(ding)作用(yong)。基于齒輪(lun)嚙(nie)合(he)原理，構(gou)建(jian)蝸(gua)桿(gan)齒面接觸和誘導(dao)法曲率方程，利(li)用(yong)數值計算(suan)(suan)方法及(ji)Hertz接觸應力計算(suan)(suan)模型，重點分析了單頭蝸(gua)桿(gan)傳(chuan)動(dong)下蝸(gua)輪(lun)齒數及(ji)中心巨變化對平(ping)面包(bao)絡(luo)內(nei)嚙(nie)合(he)蝸(gua)桿(gan)傳(chuan)動(dong)影響。研究表(biao)明，母平(ping)面傾(qing)(qing)角(jiao)在18°-36°之間取值時，平(ping)面包(bao)絡(luo)內(nei)嚙(nie)合(he)蝸(gua)桿(gan)傳(chuan)動(dong)的(de)(de)嚙(nie)合(he)性能具(ju)有(you)優于其他(ta)角(jiao)度嚙(nie)合(he)性能的(de)(de)特點。研究結果為平(ping)面包(bao)絡(luo)內(nei)嚙(nie)合(he)蝸(gua)桿(gan)傳(chuan)動(dong)的(de)(de)后續(xu)研究奠定(ding)了理論基礎。  蝸(gua)輪(lun)蝸(gua)桿(gan)傳(chuan)動(dong)是一種......

[ 11-10 16:58 ]

快(kuai)貓下載地址: 齒向(xiang)修形齒輪嚙合剛度及齒向(xiang)載荷分布(bu)系(xi)數(shu)的計算研究

  齒(chi)(chi)向修(xiu)形(xing)(xing)技(ji)術(shu)已成為提高(gao)齒(chi)(chi)輪(lun)(lun)(lun)傳(chuan)動性能、降(jiang)低振動噪聲的(de)主要手(shou)段之一(yi)(yi)。其中，嚙合剛度、載(zai)(zai)荷(he)分布(bu)系數(shu)(shu)是(shi)評價齒(chi)(chi)輪(lun)(lun)(lun)修(xiu)形(xing)(xing)效果(guo)優劣的(de)主要參(can)數(shu)(shu)、考慮安(an)(an)裝誤(wu)(wu)差的(de)影響，利(li)用(yong)有限元準靜態分析方法，對(dui)(dui)不(bu)同修(xiu)形(xing)(xing)量(liang)(liang)齒(chi)(chi)輪(lun)(lun)(lun)的(de)嚙合剛度以(yi)及載(zai)(zai)荷(he)分布(bu)系數(shu)(shu)開展定(ding)量(liang)(liang)計算。分析得到了安(an)(an)裝誤(wu)(wu)差、齒(chi)(chi)輪(lun)(lun)(lun)修(xiu)形(xing)(xing)量(liang)(liang)對(dui)(dui)齒(chi)(chi)輪(lun)(lun)(lun)嚙合剛度以(yi)及載(zai)(zai)荷(he)分布(bu)系數(shu)(shu)的(de)影響規律。結果(guo)表明，齒(chi)(chi)向修(xiu)形(xing)(xing)不(bu)僅能增加齒(chi)(chi)輪(lun)(lun)(lun)的(de)嚙合剛度還可以(yi)降(jiang)低不(bu)平行(xing)度誤(wu)(wu)差引起的(de)齒(chi)(chi)向載(zai)(zai)荷(he)分布(bu)系數(shu)(shu)，安(an)(an)裝誤(wu)(wu)差一(yi)(yi)定(ding)時(shi)齒(chi)(chi)輪(lun)(lun)(lun)存在佳值域的(de)齒(chi)(chi)向修(xiu)形(xing)(xing)量(liang)(liang)，偏(pian)離(li)該值域時(shi)傳(chuan)動性能變(bian)差。  大量(liang)(liang)的(de)研(yan)究(jiu)和實踐(jian)表明，適(shi)當的(de)齒(chi)(chi)向......

[ 11-09 15:15 ]

快貓(mao)下載地址: 一種平行軸圓(yuan)截(jie)面(mian)齒輪輪廓的構(gou)件方法

  在空(kong)(kong)間曲(qu)線(xian)嚙(nie)合理論的(de)(de)(de)基礎上，研(yan)究平行(xing)(xing)軸線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)的(de)(de)(de)傳動(dong)(dong)(dong)機構(gou)。以螺(luo)旋線(xian)為中(zhong)心線(xian)，研(yan)究截(jie)面(mian)(mian)(mian)為圓時主(zhu)動(dong)(dong)(dong)線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)曲(qu)面(mian)(mian)(mian)方(fang)(fang)程(cheng)，并(bing)以此(ci)構(gou)建主(zhu)動(dong)(dong)(dong)線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)齒(chi)(chi)(chi)(chi)(chi)(chi)面(mian)(mian)(mian)齒(chi)(chi)(chi)(chi)(chi)(chi)廓。以同軸心的(de)(de)(de)圓截(jie)面(mian)(mian)(mian)為從動(dong)(dong)(dong)線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)的(de)(de)(de)齒(chi)(chi)(chi)(chi)(chi)(chi)廓截(jie)面(mian)(mian)(mian)，并(bing)根(gen)據從動(dong)(dong)(dong)輪(lun)中(zhong)心線(xian)構(gou)建從動(dong)(dong)(dong)輪(lun)齒(chi)(chi)(chi)(chi)(chi)(chi)面(mian)(mian)(mian)方(fang)(fang)程(cheng)。分析線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)嚙(nie)合傳動(dong)(dong)(dong)時主(zhu)動(dong)(dong)(dong)線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)上的(de)(de)(de)正(zheng)(zheng)反(fan)轉(zhuan)觸(chu)線(xian)，并(bing)根(gen)據空(kong)(kong)間曲(qu)線(xian)嚙(nie)合方(fang)(fang)程(cheng)求出從動(dong)(dong)(dong)線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)的(de)(de)(de)正(zheng)(zheng)反(fan)轉(zhuan)觸(chu)線(xian)。此(ci)正(zheng)(zheng)反(fan)轉(zhuan)觸(chu)線(xian)應滿足從動(dong)(dong)(dong)線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)中(zhong)心線(xian)構(gou)建的(de)(de)(de)圓截(jie)面(mian)(mian)(mian)從動(dong)(dong)(dong)線(xian)輪(lun)齒(chi)(chi)(chi)(chi)(chi)(chi)面(mian)(mian)(mian)方(fang)(fang)程(cheng)。可通過增加齒(chi)(chi)(chi)(chi)(chi)(chi)數提(ti)高(gao)其重合度(du)以提(ti)高(gao)傳動(dong)(dong)(dong)穩定性(xing)。通過建立線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)副(fu)3D模型并(bing)進行(xing)(xing)運動(dong)(dong)(dong)學模擬仿真(zhen)試驗，結果表(biao)明，此(ci)方(fang)(fang)法構(gou)建的(de)(de)(de)平行(xing)(xing)軸圓截(jie)面(mian)(mian)(mian)線(xian)齒(chi)(chi)(chi)(chi)(chi)(chi)輪(lun)......

[ 11-08 17:12 ]

快貓下載地址(zhi): 輪廓電(dian)機行星(xing)傳(chuan)動系(xi)統傳(chuan)遞誤差研究

  以輪廓電機中行星傳(chuan)動(dong)系(xi)(xi)統為研究對象，考慮時變(bian)嚙合(he)剛(gang)度、嚙合(he)相(xiang)(xiang)位和當量嚙合(he)誤(wu)差(cha)(cha)等影響因(yin)素，建立了(le)系(xi)(xi)統的(de)(de)運動(dong)微(wei)分方程，并運用Runge-Kuttge法求解得到系(xi)(xi)統傳(chuan)遞(di)誤(wu)差(cha)(cha)。基(ji)于傳(chuan)遞(di)誤(wu)差(cha)(cha)曲線，分析(xi)了(le)各類誤(wu)差(cha)(cha)和支(zhi)撐剛(gang)度變(bian)化對系(xi)(xi)統傳(chuan)遞(di)誤(wu)差(cha)(cha)幅(fu)值的(de)(de)影響，并對誤(wu)差(cha)(cha)初相(xiang)(xiang)位進行優(you)化。結(jie)果表明(ming)，誤(wu)差(cha)(cha)值的(de)(de)大小(xiao)與系(xi)(xi)統傳(chuan)遞(di)誤(wu)差(cha)(cha)幅(fu)值呈正比，誤(wu)差(cha)(cha)初相(xiang)(xiang)位的(de)(de)變(bian)化可以在不改變(bian)構(gou)件精度的(de)(de)條件下(xia)減(jian)小(xiao)系(xi)(xi)統傳(chuan)遞(di)誤(wu)差(cha)(cha)幅(fu)值，支(zhi)撐剛(gang)度的(de)(de)大小(xiao)與系(xi)(xi)統傳(chuan)遞(di)誤(wu)差(cha)(cha)幅(fu)值成反比。研究工作(zuo)為行星傳(chuan)動(dong)系(xi)(xi)統的(de)(de)設(she)計提供知道作(zuo)用，降低了(le)制造難度和安裝成本。  輪廓......

[ 11-02 16:19 ]