發(fā)布時(shí)間：2018-03-30 17:15

  本文選題：鋼帶　切入點(diǎn)：長距離　出處：《杭州電子科技大學(xué)》2012年碩士論文

【摘要】：鋼帶與普通帶相比,具有彈性模量高、彈性變形小、可實(shí)現(xiàn)較大力矩的精密傳動(dòng)等優(yōu)點(diǎn)。鋼帶精密傳動(dòng)在機(jī)器人、精密光學(xué)儀器等領(lǐng)域的短距離傳動(dòng)中得到了較廣泛的應(yīng)用,但在長距離傳動(dòng)中應(yīng)用較少,尤其是基于摩擦傳動(dòng)機(jī)理的長距離精密傳動(dòng),其理論研究和實(shí)驗(yàn)論證均缺少。因此,對鋼帶在長距離上實(shí)現(xiàn)精密摩擦傳動(dòng)的理論、仿真及實(shí)驗(yàn)研究具有十分重要的科學(xué)價(jià)值與工程意義。 本文從鋼帶傳動(dòng)過程中的剛?cè)狁詈咸匦猿霭l(fā),主要運(yùn)用多體系統(tǒng)動(dòng)力學(xué)分析軟件和鋼帶長距離傳動(dòng)專用實(shí)驗(yàn)臺(tái),進(jìn)行了長距離鋼帶傳動(dòng)系統(tǒng)的動(dòng)力學(xué)建模、仿真分析及實(shí)驗(yàn)等研究工作。 基于剛?cè)狁詈辖佑|理論,建立了帶輪剛體動(dòng)力學(xué)模型、鋼帶可變形體動(dòng)力學(xué)模型、及帶輪-鋼帶的剛?cè)狁詈蟿?dòng)力學(xué)模型等理論模型。從理論上對鋼帶傳動(dòng)的載荷、應(yīng)力、滑動(dòng)率特性、張緊力特性及傳動(dòng)精度等方面進(jìn)行了全面分析,得到了根據(jù)穿透深度判斷鋼帶與帶輪是否跑偏等結(jié)果。 在理論模型及理論分析結(jié)果的基礎(chǔ)上,運(yùn)用RecurDyn多體系統(tǒng)動(dòng)力學(xué)軟件建立了中心距為3m的鋼帶摩擦傳動(dòng)動(dòng)力學(xué)仿真模型；仿真分析了傳動(dòng)過程中的張緊力、滑動(dòng)率、傳動(dòng)精度、應(yīng)力分布及跑偏等特性,研究表明,鋼帶在長距離摩擦傳動(dòng)上,可實(shí)現(xiàn)精密傳動(dòng),且承載力與預(yù)緊力、帶輪結(jié)構(gòu)有一定關(guān)系。 根據(jù)仿真結(jié)果和實(shí)驗(yàn)需要,研制了專用實(shí)驗(yàn)臺(tái)的傳動(dòng)測試系統(tǒng),包括：磁粉制動(dòng)器式從動(dòng)輪加載裝置、稱重傳感器的測量與張緊調(diào)節(jié)裝置、光電編碼器的主／從動(dòng)輪精密測速裝置和應(yīng)變片的鋼帶變形檢測裝置等。實(shí)驗(yàn)研究了系統(tǒng)的傳動(dòng)性能,包括：在有效傳動(dòng)條件下鋼帶所需最小預(yù)緊力與負(fù)載之間的關(guān)系、鋼帶跑偏、傳動(dòng)精度等測試實(shí)驗(yàn)。分析了實(shí)測結(jié)果,并將其與仿真結(jié)果進(jìn)行對比,進(jìn)一步更準(zhǔn)確地修正了仿真模型。通過實(shí)驗(yàn),初步得到了鋼帶實(shí)現(xiàn)長距離精密摩擦傳動(dòng)的必要條件——張緊力與負(fù)載曲線,同時(shí)也驗(yàn)證了軟件仿真和實(shí)驗(yàn)具有較高的可靠性。 本文的研究成果,有利于長距離精密摩擦傳動(dòng)的深入研究與實(shí)驗(yàn)驗(yàn)證,也為鋼帶長距離精密摩擦傳動(dòng)的應(yīng)用提供很好的理論和實(shí)驗(yàn)指導(dǎo)。
[Abstract]:Compared with conventional belt, steel strip has the advantages of high elastic modulus, small elastic deformation, large torque precision transmission and so on. The steel strip precision transmission has been widely used in the field of robot, precision optical instrument and so on. However, there are few applications in long distance transmission, especially the long distance precision transmission based on friction transmission mechanism, which is lack of theoretical research and experimental proof. Therefore, the theory of precision friction transmission for steel belt on long distance is discussed. Simulation and experimental research have very important scientific value and engineering significance. Based on the rigid-flexible coupling characteristics in the process of steel belt transmission, the dynamic modeling of the long distance steel belt transmission system is carried out by using the multi-body system dynamics analysis software and the special experiment platform for long distance transmission of steel strip. Research work such as simulation analysis and experiment. Based on the theory of rigid-flexible coupling contact, the dynamic model of rigid body with wheel, the dynamic model of variable body of steel strip, and the dynamic model of rigid-flexible coupling of steel belt with wheel and strip are established. The characteristics of slip rate, tension force and transmission accuracy are analyzed comprehensively, and the results are obtained to judge whether the steel belt and the belt wheel run off according to the penetration depth. On the basis of theoretical model and theoretical analysis results, the dynamic simulation model of steel belt friction transmission with center distance of 3m is established by using RecurDyn multi-body system dynamics software, and the tension force, slip rate and transmission precision in transmission process are simulated and analyzed. The characteristics of stress distribution and running deviation show that the steel belt can realize precision transmission on the long distance friction transmission, and the bearing capacity is related to the preload and the structure of the belt wheel. According to the result of simulation and the need of experiment, the transmission and test system of the special test bench is developed, which includes: the magnetic powder brake loading device from the driving wheel, the measuring and tightening adjusting device of the weighing sensor. The main / slave precision speed measuring device of photoelectric encoder and the steel strip deformation detecting device of strain gauge, etc. The transmission performance of the system is studied experimentally, including: the relation between the minimum preload and the load of the steel belt under the effective transmission condition, The test results of steel strip deviation and transmission accuracy are analyzed, and compared with the simulation results, the simulation model is further corrected more accurately. The necessary condition of long distance precision friction transmission is obtained, which is the tension force and load curve, and the reliability of software simulation and experiment is also verified. The research results of this paper are beneficial to the deep research and experimental verification of long distance precision friction transmission, and also provide good theoretical and experimental guidance for the application of long distance precision friction transmission of steel strip.
【學(xué)位授予單位】：杭州電子科技大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TH132.32

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