針對(duì)汽車用雙十字軸萬向節(jié)轉(zhuǎn)向傳動(dòng)軸的安裝空間受限，難以滿足等速傳動(dòng)條件，需調(diào)整相位角來減小轉(zhuǎn)速波動(dòng)的問題，采用空間幾何投影的方法，建立了雙十字軸萬向節(jié)軸承型號(hào)轉(zhuǎn)向傳動(dòng)軸的轉(zhuǎn)速比和轉(zhuǎn)角方程，并用等速條件驗(yàn)證了其正確性。定量分析了相位角對(duì)轉(zhuǎn)速比的影響，結(jié)果表明，當(dāng)兩個(gè)傳動(dòng)角相等，且相位角等于傳動(dòng)面夾角時(shí)，輸出軸與輸入軸之間能實(shí)現(xiàn)等速傳動(dòng); 兩個(gè)傳動(dòng)角不相等時(shí)，雙十字軸萬向節(jié)傳動(dòng)軸不能實(shí)現(xiàn)等速傳動(dòng)，但是，當(dāng)相位角等于傳動(dòng)面夾角時(shí)，輸出軸與輸入軸之間的轉(zhuǎn)速差最小。因此得出，傳動(dòng)軸相位角與傳動(dòng)面夾角相等且方向相反時(shí)，為最佳相位角。然后，推導(dǎo)出了基于轉(zhuǎn)向系統(tǒng)硬點(diǎn)的最佳相位角求解公式，并編制了計(jì)算程序，通過實(shí)例驗(yàn)證了程序計(jì)算結(jié)果是準(zhǔn)確的。分析結(jié)論和所編制的程序?qū)ζ�車轉(zhuǎn)向系統(tǒng)的設(shè)計(jì)以及其他類型萬向節(jié)的傳動(dòng)研究具有理論和實(shí)際意義。關(guān)鍵詞相位角等速傳動(dòng)十字軸萬向節(jié)轉(zhuǎn)向傳動(dòng)軸硬點(diǎn)。
  Influence Analysis of Phase Angle of Double Cross Universal Joint Steering Transmission Shaft Li Ning1，2 Li Yourong1 Zhou Sizhu2 Zeng Yunyun2( 1 The Key Laboratory of Metallurgical Equipment and Control of Education Ministry，Wuhan University of Science and Technology，Wuhan 430081，China)( 2 Institute of Strength and Vibration of Mechanical Structures，Yangtze University，Jing zhou 434023，China)Abstract Aiming at the problem of the installation space of double cross universal joint steering transmissionshaft is limited，it is difficult to meet the condition of constant speed drive，and need to adjust the phase angle to reduce the rotating speed fluctuation，the rotating speed ratio and rotating angle equations of steering transmission shaft are established by means of spatial geometric projection method，and the equation is verified by using the constant velocity condition． The influence of phase angle on rotating speed ratio are quantitatively analyzed， the results show that the input shaft and output shaft can realize constant speed drive while two transmissionangle are equal and the phase angle is equal to the transmission plane angle，and the double cross universal joint transmission shaft can＇t realize the constant speed drive while two transmission angle are not equal． However，the speed difference of input shaft and output shaft is the smallest while the phase angle is equal to the transmission plane angle． Therefore，this is the best phase angle when phase angle is equal to transmission plane angle and their phases are reversal． Then，the optimal solution formula of phase angle is deduced basedon hard point of steering system and the computer program is compiled． The calculation result of the program is accurate by example verification． The conclusion and the program has theoretical and practical significance on system design of automobile steering and research on the transmission of other types universal joint．