本文關(guān)鍵詞：300kN曲軸式高精度高速?zèng)_床研究與設(shè)計(jì)　出處：《東華大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

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【摘要】：高速?zèng)_床是一種重要的沖壓設(shè)備,隨著工業(yè)的進(jìn)一步發(fā)展,高速?zèng)_床的應(yīng)用范圍在不斷擴(kuò)大,在國(guó)民經(jīng)濟(jì)中發(fā)揮著重要的作用。而目前國(guó)產(chǎn)高速?zèng)_床普遍存在著可靠性比較差的問題,可靠性問題成為影響國(guó)產(chǎn)高速?zèng)_床性能發(fā)揮和市場(chǎng)競(jìng)爭(zhēng)力的主要因素。因此,提高國(guó)產(chǎn)高速?zèng)_床的可靠性成為目前亟待解決的問題�，F(xiàn)代加工業(yè)要求沖壓技術(shù)與加工設(shè)備向柔性化發(fā)展,但傳統(tǒng)的沖壓裝備缺乏靈活性,無法很好的適應(yīng)各種加工。而在伺服沖床控制系統(tǒng)中采用交流伺服控制這一技術(shù),能更好地滿足沖床加工的各種需求。通過傳統(tǒng)方法開發(fā)伺服控制系統(tǒng)會(huì)使得系統(tǒng)的開發(fā)周期長(zhǎng)、難度大、成本高,并且復(fù)雜的控制算法也無法方便、快速地實(shí)現(xiàn)。論文從以下七個(gè)方面來進(jìn)行沖床設(shè)計(jì):(1)傳動(dòng)方案的設(shè)計(jì):傳動(dòng)方案設(shè)計(jì)要根據(jù)沖床最大負(fù)載以及各傳動(dòng)機(jī)構(gòu)的傳遞效率,綜合考慮來確定傳動(dòng)方案。而本題已經(jīng)明確為曲軸式?jīng)_床,所以在動(dòng)力傳動(dòng)機(jī)構(gòu)中已經(jīng)明確了曲軸這一傳動(dòng)機(jī)構(gòu)。(2)壓力機(jī)主體機(jī)構(gòu)的尺寸參數(shù)確定:壓力機(jī)的主體機(jī)構(gòu)的尺寸參數(shù)確定要經(jīng)過一系列的計(jì)算與分析,如進(jìn)行靜力學(xué)分析、模態(tài)分析、運(yùn)動(dòng)分析等,才能得到符合正常工作的機(jī)構(gòu)尺寸參數(shù)。(3)壓力機(jī)主體機(jī)構(gòu)的運(yùn)動(dòng)分析:對(duì)高精密高速?zèng)_床的工作機(jī)構(gòu)進(jìn)行運(yùn)動(dòng)學(xué)分析和動(dòng)力學(xué)理論計(jì)算,分析了動(dòng)平衡結(jié)構(gòu),并計(jì)算對(duì)比了高速?zèng)_床在有無動(dòng)平衡裝置時(shí)的慣性力大小,從而分析沖床加工時(shí)的穩(wěn)定性。(4)電機(jī)的選擇:電機(jī)作為沖床工作的動(dòng)力源,起著至關(guān)重要的作用。電機(jī)的選擇要在傳動(dòng)方案設(shè)定后,通過最大負(fù)載以及各傳動(dòng)機(jī)構(gòu)之間的傳動(dòng)效率計(jì)算出所需電機(jī)的功率,從而選定電機(jī)。(5)壓力機(jī)傳動(dòng)系統(tǒng)主要零部件的確定:壓力機(jī)傳動(dòng)系統(tǒng)的主要零部件的確定要在傳動(dòng)方案確定后,首選符合國(guó)家標(biāo)準(zhǔn)的零件,如需要自行設(shè)計(jì)的話,要設(shè)計(jì)加工出輕便、剛度高的零部件。(6)潤(rùn)滑方式的研究:高速?zèng)_床在工作時(shí)由于高速運(yùn)動(dòng),相互接觸的相對(duì)運(yùn)動(dòng)的機(jī)構(gòu)之間必然產(chǎn)生大量的熱量。如果這些熱量無法散發(fā)出去,則會(huì)對(duì)沖床的可靠性以及加工精度必然帶來極大的影響,尤其是曲軸的主軸頸處。所以選擇可靠有效的潤(rùn)滑方式對(duì)于沖床的設(shè)計(jì)來講非常重要。(7)沖床加工精度分析。影響沖床加工質(zhì)量的因素主要有以下幾個(gè):沖床工作臺(tái)面和滑塊底面的平面度、滑塊行程對(duì)工作臺(tái)面的平行度、滑塊行程對(duì)工作臺(tái)面的垂直度、沖床模柄孔中心線對(duì)滑塊行程的平行度等。
[Abstract]:High speed press is an important stamping equipment. With the further development of industry, the application range of high-speed punch is expanding and playing an important role in the national economy. At present, the reliability of the domestic high-speed punch press is relatively poor. The reliability problem has become the main factor that affects the performance and market competitiveness of the domestic high-speed punch press. Therefore, it is an urgent problem to improve the reliability of the domestic high speed punch. The modern processing industry requires the flexible development of stamping technology and processing equipment, but the traditional stamping equipment is lack of flexibility and can not adapt well to all kinds of processing. The use of AC servo control technology in the servo press control system can better meet the needs of the punching machine. The development of servo control system by traditional methods will make the development cycle of the system long, difficult and costly, and the complex control algorithm can not be implemented conveniently and quickly. This paper carries out punch design from the following seven aspects: (1) design of transmission scheme: transmission plan design must be based on the maximum load of puncher and transmission efficiency of all transmission mechanisms. The problem has been clearly defined as a crankshaft punch, so the drive mechanism of the crankshaft has been clearly defined in the power transmission mechanism. (2) the size parameter of the main body of the press is determined: the size parameters of the main body of the press must be determined through a series of calculations and analysis, such as static analysis, modal analysis and motion analysis, so as to get the size parameters that meet the normal working mechanism. (3) analysis of press body mechanism movement: the operating mechanism of the high precision high speed punch to calculate kinematics analysis and dynamics analysis theory, the dynamic balance structure and calculation of high-speed punch in a dynamic balance device of the inertial force, so as to analyze the stability of the punch processing. (4) the choice of the motor: the motor, as the power source of the punching machine, plays a vital role. After selecting the transmission scheme, we can calculate the power of the required motor through the maximum load and transmission efficiency between each transmission mechanism, so as to select the motor. (5) the determination of the main parts of the transmission system of a press. The determination of the main parts of the transmission system of a press must first select the parts that conform to the national standard after the transmission plan is determined. If we need to design it, we must design and manufacture parts with high portability and rigidity. (6) research on the mode of lubrication: a large number of heat can be produced between the high speed press and the relative motion of each other because of the high speed movement. If these heat can not be sent out, it will have a great influence on the reliability and machining accuracy of the punch, especially the crankshaft of the crankshaft. So it is very important to choose a reliable and effective lubrication method for the design of the punch. (7) analysis of the machining precision of the punching machine. The main factors that affect the quality of punch press include the following aspects: the planeness of the punch table and the bottom of the slide block, the parallelism of the slider stroke to the worktable, the verticality of the slider stroke to the worktable, the parallelism of the center line of the punch die, the parallelism of the slider stroke and so on.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：TG385.1

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