本文選題：行程控制 + 徑向圓跳動��； 參考：《合肥工業(yè)大學(xué)》2017年碩士論文

【摘要】：細(xì)長桿件在工業(yè)中具有廣泛的應(yīng)用,生產(chǎn)和使用的過程中桿件會發(fā)生彎曲,需通過桿件矯直保證質(zhì)量。本文圍繞細(xì)長桿件矯直工藝關(guān)鍵問題進(jìn)行研究,主要研究內(nèi)容包括以下幾個方面:首先,以細(xì)長桿件全自動矯直機(jī)技術(shù)要求為設(shè)計目標(biāo),基于行程控制矯直原理設(shè)計矯直機(jī)控制系統(tǒng)。完成矯直機(jī)工藝流程設(shè)計、矯直機(jī)運動控制系統(tǒng)硬件設(shè)計、程序設(shè)計以及可視化操作。其次,對矯直過程中細(xì)長桿件徑向圓跳動的測量問題進(jìn)行研究,對細(xì)長桿件徑向圓跳動進(jìn)行建模,以PLC為基礎(chǔ),運用激光傳感器測距原理,完成細(xì)長桿件徑向圓跳動的測量系統(tǒng)設(shè)計。在桿件的轉(zhuǎn)動過程中,分析桿件的夾緊方式,得出桿件轉(zhuǎn)動不發(fā)生打滑的條件;分析測量基準(zhǔn)不重合時對測量結(jié)果的影響。再次,分析中小直徑鋁合金桿件矯直的動力響應(yīng)過程,以簡支梁為模型分析沖擊載荷作用下的彈塑性變形,得出桿件在集中載荷和均勻載荷下的動力響應(yīng)。而后,從能量的觀點出發(fā),分析桿件在沖擊載荷作用下,桿件發(fā)生彈塑性變形的過程。最后,針對細(xì)長桿件徑向圓跳動的測量理論進(jìn)行實驗驗證,分析影響測量精度的因素;建立中小直徑鋁合金桿件矯直沖擊載荷試驗,分析桿件矯直過程中壓頭速度對桿件徑向圓跳動的影響。
[Abstract]:Long and thin members have been widely used in industry. In the process of production and use, the members will bend, and the quality should be guaranteed by straightening the bars. The main contents of this paper are as follows: firstly, the technical requirements of automatic straightening machine for slender rod are the design goal. Based on the principle of stroke control straightening, the control system of straightening machine is designed. Finish straightening machine process design, straightening machine motion control system hardware design, program design and visual operation. Secondly, the measurement problem of radial circle runout of slender rod in straightening process is studied. The radial circle runout of slender rod is modeled. Based on PLC, the principle of laser sensor ranging is used. The design of measuring system for radial circle runout of slender rod is completed. In the process of rotating the rod, the clamping mode of the bar is analyzed, and the conditions for the rotation of the rod not to slip are obtained, and the influence on the measurement results when the measuring datum is not coincidence is analyzed. Thirdly, the dynamic response process of small and medium diameter aluminum alloy bar straightening is analyzed. The elastic-plastic deformation under impact load is analyzed using simply supported beam as model, and the dynamic response of the bar under concentrated load and uniform load is obtained. Then, from the point of view of energy, the process of elastic-plastic deformation of members under impact load is analyzed. Finally, the measurement theory of radial circle runout of thin and long rod is tested, and the factors influencing the measuring accuracy are analyzed, and the straightening impact load test of aluminum alloy rod with medium and small diameter is established. The influence of head velocity on radial circle runout of rod during straightening process is analyzed.
【學(xué)位授予單位】：合肥工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TG306

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