本文關(guān)鍵詞：高速氣缸位移—壓力式緩沖結(jié)構(gòu)研究　出處：《大連海事大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 等減速緩沖 理想緩沖 仿真軟件 位移-壓力式緩沖 高速氣缸

【摘要】：氣缸是工業(yè)自動化中常用的執(zhí)行機構(gòu)。為了提高生產(chǎn)效率,減小投資成本,氣缸高速化成為必然的發(fā)展趨勢。制約氣缸高速化的原因是行程末端緩沖問題。當(dāng)前氣缸常用的緩沖方式有溢流閥式和針閥式,但對外界工況變化適應(yīng)能力差。因此本課題的目標(biāo)是設(shè)計一種高速氣缸緩沖結(jié)構(gòu),對外界工況的變化具有較廣范圍的適應(yīng)能力。本文研究了高速氣缸等減速緩沖,闡述了基于壓力反饋的等減速緩沖原理,通過實驗,得到了實現(xiàn)等減速緩沖所需要的緩沖腔壓力與各個緩沖特性參數(shù)之間的關(guān)系。根據(jù)等減速的緩沖特性,建立了該緩沖方式的數(shù)學(xué)模型,并借鑒液壓缸理想緩沖運動曲線,對此運動學(xué)方程改進(jìn),得到了緩沖腔壓力,進(jìn)而得到了排氣流量表達(dá)式,通過排氣流量可以得到表征兩緩沖方式的重要參數(shù)——節(jié)流面積的求解流程。借助MATLAB開發(fā)平臺編寫仿真軟件,MATLAB平臺的GUI與SIMULINK之間具有較好交互性。利用此軟件可得到等減速和理想緩沖方式的緩沖閥節(jié)流面積隨位移變化的規(guī)律。依據(jù)理想緩沖方式的緩沖閥節(jié)流面積隨位移變化曲線,同時考慮壓力反饋式緩沖原理,設(shè)計并加工了位移-壓力式緩沖結(jié)構(gòu),利用仿真軟件對在活塞速度、負(fù)載及供氣壓力等工況變化下的適應(yīng)性進(jìn)行了仿真,并通過實驗驗證了該結(jié)構(gòu)在一定工況變化范圍內(nèi)具有較好的適應(yīng)能力。
[Abstract]:Cylinders are commonly used in industrial automation. In order to improve production efficiency and reduce investment costs. Cylinder high-speed becomes an inevitable development trend. The reason of restricting cylinder high-speed is the end of stroke buffer problem. At present, there are relief valve type and needle valve type commonly used in cylinder buffering. But the ability to adapt to the change of external working conditions is poor, so the goal of this project is to design a high-speed cylinder buffer structure. This paper studies the equal-deceleration buffer of high-speed cylinder, and expounds the principle of equal-deceleration buffer based on pressure feedback. The relationship between the buffer cavity pressure and the buffering characteristic parameters is obtained. According to the buffer characteristic of equal deceleration, the mathematical model of the buffer mode is established. With reference to the ideal cushioning motion curve of hydraulic cylinder, this kinematics equation is improved, and the pressure of buffer chamber is obtained, and the expression of exhaust flow rate is obtained. The flow of throttling area, an important parameter representing the two buffers, can be obtained by exhaust flow, and the simulation software is compiled with the help of MATLAB development platform. There is good interaction between GUI and SIMULINK in MATLAB platform. By using this software, the change of throttle area of buffer valve with equal deceleration and ideal buffer mode with displacement can be obtained. The throttle area of buffer valve changes with displacement. At the same time, considering the principle of pressure feedback buffer, the displacement-pressure buffer structure is designed and machined, and the adaptability of piston speed, load and air supply pressure is simulated by simulation software. The experimental results show that the structure has better adaptability in a certain range of working conditions.
【學(xué)位授予單位】：大連海事大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TH138.51

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本文編號：1397175