發(fā)布時間：2018-10-18 13:46

【摘要】：Φ335全自動鋼管端面銑頭倒棱機是鋼管生產線中的重要精加工設備,本文對Φ335全自動鋼管端面銑頭倒棱機中自動輸送機構進行了綜合性的研究,首先對鋼管自動輸送機構進行了ADAMS優(yōu)化,優(yōu)化結果降低了原動件的驅動力和液壓能耗。通過對自動輸送機構中關鍵部件進行了強度校核,并且進一步對關鍵部件進行可靠性分析,從概率論與數理統(tǒng)計的角度說明了關鍵部件安全可靠的程度。由于關鍵部件的可靠度過高,從節(jié)約材料的角度出發(fā),對關鍵部件進行了ANSYS結構優(yōu)化設計,優(yōu)化結果使關鍵部件重量減輕并且滿足強度和剛度要求。在實現(xiàn)降低能耗和節(jié)省材料的目標后,進一步對自動輸送機構進行了振動分析,為改善輸送機構的振動特性,實現(xiàn)平穩(wěn)輸送提供了數據支撐。在此基礎之上,對自動輸送機構進行了PLC控制系統(tǒng)設計,實現(xiàn)了自動輸送和手動輸送兩種模式,提高了生產效率。本課題的主要研究內容如下:(1)自動輸送機構的驅動力優(yōu)化對輸送機構中的相關桿件進行參數化,然后對機構中液壓缸的驅動力采取整體和局部兩種優(yōu)化方案,從兩種優(yōu)化方案中選取最優(yōu)方案,實現(xiàn)最大程度降低液壓缸能耗的目的。優(yōu)化結果使升降機構和橫移機構的平均驅動力分別下降59.4%和72.7%。(2)關鍵部件的強度校核和可靠性分析在ANSYS中求解出輸送機構關鍵部件在最大載荷下的應力分布,從而根據強度理論進行關鍵部件的強度校核。由于基于安全系數法的強度校核不能定量說明桿件安全可靠的程度,為此根據ADAMS后處理模塊中分析出載荷在正態(tài)分布下的均值和標準差,從而進一步對關鍵部件的可靠性進行分析,從數理統(tǒng)計與概率論的角度說明了兩關鍵部件可靠度均為99.99%以上。(3)關鍵部件的輕量化設計由于自動輸送機構中關鍵部件的可靠度過高,從節(jié)省材料實現(xiàn)最大經濟效益的目標出發(fā),對關鍵部件進行了ANSYS結構優(yōu)化,優(yōu)化結果使兩關鍵部件的重量分別下降19.29%和34.98%,實現(xiàn)了關鍵部件的輕量化設計。(4)自動輸送機構的振動分析對鋼管自動輸送機構進行自由振動分析和受迫振動分析,測量出機構的頻率響應數據,從而了解到輸送機構的振動特性,為避開共振實現(xiàn)平穩(wěn)輸送提供了數據參考。(5)PLC控制系統(tǒng)設計根據該輸送機構的運動要求,設計了基于順序控制的PLC控制系統(tǒng),該控制系統(tǒng)具有自動和手動控制模式,通過確精地自動化輸送提高了生產效率,同時手動輸送可以實現(xiàn)特殊工況下的點動輸送。
[Abstract]:桅 335 automatic pipe end milling head chamfering machine is an important finishing equipment in steel pipe production line. In this paper, the automatic conveying mechanism of 桅 335 automatic pipe end milling head chamfering machine is studied comprehensively. First, the ADAMS optimization of the steel pipe automatic conveying mechanism is carried out, and the optimization results reduce the driving force and the hydraulic energy consumption of the original moving parts. By checking the strength of the key components in the automatic conveying mechanism and further analyzing the reliability of the key components, the degree of safety and reliability of the key components is explained from the point of view of probability theory and mathematical statistics. Due to the high reliability of the key components, the ANSYS structural optimization design of the key components is carried out from the point of view of material saving. The optimization results reduce the weight of the key components and meet the requirements of strength and stiffness. After realizing the goal of reducing energy consumption and saving materials, the vibration analysis of the automatic conveying mechanism is carried out, which provides data support for improving the vibration characteristics of the conveying mechanism and realizing the smooth transportation. On the basis of this, the PLC control system of the automatic conveying mechanism is designed, and the two modes of automatic conveying and manual conveying are realized, and the production efficiency is improved. The main research contents of this paper are as follows: (1) the driving force optimization of the automatic conveying mechanism parameterizes the related members of the conveying mechanism, and then adopts two optimization schemes of the driving force of the hydraulic cylinder in the mechanism, one is the whole and the other is the local one. The purpose of minimizing the energy consumption of hydraulic cylinder is achieved by selecting the optimal scheme from two kinds of optimization schemes. The results of optimization reduce the average driving force of lifting mechanism and transverse mechanism by 59.4% and 72.7% respectively. (2) strength check and reliability analysis of key components are used in ANSYS to find out the stress distribution of the key parts of the conveying mechanism under the maximum load. According to the strength theory, the strength check of the key parts is carried out. Because the strength check based on the safety factor method can not quantitatively explain the safety and reliability of the bar, the mean value and standard deviation of the load under normal distribution are analyzed according to the ADAMS post-processing module. In order to further analyze the reliability of key components, From the point of view of mathematical statistics and probability theory, it is shown that the reliability of the two key components is above 99.99%. (3) the lightweight design of the key components is due to the high reliability of the key components in the automatic conveying mechanism. In order to save materials and achieve maximum economic benefit, the ANSYS structure of key components is optimized. The optimization results reduce the weight of the two key components by 19.29% and 34.98%, respectively. The lightweight design of the key components is realized. (4) the vibration analysis of the automatic conveying mechanism is carried out on the free vibration analysis and forced vibration analysis of the steel pipe automatic conveying mechanism. The frequency response data of the mechanism are measured, and the vibration characteristics of the conveying mechanism are understood, which provides a data reference for the smooth transmission without resonance. (5) the design of the PLC control system is based on the motion requirements of the conveying mechanism. The PLC control system based on sequential control is designed. The control system has automatic and manual control mode, which improves the production efficiency by means of accurate and automatic transportation, and can realize the point moving transport under special working conditions.
【學位授予單位】：天津理工大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TH22

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