發(fā)布時(shí)間：2019-04-04 09:53

【摘要】：對(duì)液晶面板邊緣凸起檢測(cè)設(shè)備的研發(fā)是為了甄選出具有較大凸起的半成品面板,完善工廠的生產(chǎn)工藝�，F(xiàn)有的邊緣檢測(cè)設(shè)備分別利用機(jī)器視覺原理或光電傳感器掃面方式來實(shí)現(xiàn)。本課題來源是實(shí)習(xí)基地與京東方公司合作的研發(fā)項(xiàng)目,設(shè)計(jì)一臺(tái)利用位移傳感器實(shí)現(xiàn)液晶面板邊緣檢測(cè)功能的自動(dòng)化設(shè)備。該設(shè)備分為三個(gè)工位,分別是傳輸工位、搬運(yùn)工位和檢測(cè)工位。由于設(shè)備驅(qū)動(dòng)機(jī)構(gòu)對(duì)各工位工作的穩(wěn)定性有很大的影響,于是本文主要針對(duì)三個(gè)工位中的驅(qū)動(dòng)部分進(jìn)行了深入分析,為實(shí)際的設(shè)計(jì)工作提供理論支撐。本文主要從以下幾方面進(jìn)行了分析與研究。對(duì)傳輸工位的扭矩傳遞機(jī)構(gòu),提出利用磁性齒輪代替?zhèn)鹘y(tǒng)機(jī)械齒輪進(jìn)行扭矩傳遞的方案,并使用SolidWorks軟件對(duì)磁齒輪組進(jìn)行建模,使用Maxwell軟件對(duì)磁齒輪組進(jìn)行電磁學(xué)靜態(tài)仿真分析。并引入正交試驗(yàn)的方法,設(shè)計(jì)了四因素三水平的正交試驗(yàn)表,得到9組仿真試驗(yàn)。通過仿真計(jì)算得到仿真結(jié)果。對(duì)結(jié)果進(jìn)行了極差分析,驗(yàn)證了仿真中各因素的顯著性。在得到的仿真結(jié)果中,綜合考慮成本和扭矩傳遞需求等方面,最終確定剩磁為:1.17T,磁極數(shù)為:8個(gè),矯頑力為:876kA/m,間距為:0.6mm的磁齒輪組為最優(yōu)組合。對(duì)搬運(yùn)工位的機(jī)械臂進(jìn)行了有限元分析,校核在負(fù)載下的強(qiáng)度和變形表現(xiàn)。通過靜力學(xué)分析得到了機(jī)械臂的最大變形位移為6.718x10-5m,最大應(yīng)力為27.887MPa。最大應(yīng)力小于許用應(yīng)力,所以機(jī)械臂能在負(fù)載下正常工作。隨后通過拓?fù)鋬?yōu)化的方法得到了結(jié)構(gòu)去除材料的方案,實(shí)現(xiàn)了減輕結(jié)構(gòu)自重40%的目的。最后對(duì)優(yōu)化后的結(jié)構(gòu)進(jìn)行模態(tài)分析,分析其穩(wěn)定性。通過對(duì)比其各模態(tài)的固有頻率與自激頻率得出結(jié)論,在運(yùn)行過程中不會(huì)于驅(qū)動(dòng)源發(fā)生共振。在檢測(cè)工位中對(duì)其滾珠絲杠的選型和同步帶系統(tǒng)工作參數(shù)穩(wěn)定性進(jìn)行了分析計(jì)算,為設(shè)計(jì)選型提供了理論依據(jù),保證了同步帶的穩(wěn)定性,避免了發(fā)生爬齒等不良現(xiàn)象。
[Abstract]:The research and development of the liquid crystal panel edge bulge detection equipment is to select the semi-finished panel with large bulge and perfect the production process of the factory. The existing edge detection equipment is realized by means of machine vision principle or photoelectric sensor sweep mode respectively. The source of this project is the research and development project of cooperation between the practice base and BOE Corporation to design an automatic device which uses displacement sensor to realize the function of liquid crystal panel edge detection. The equipment is divided into three stations, namely, transmission station, transport station and inspection station. Because the device driving mechanism has a great influence on the stability of each station, this paper mainly analyzes the driving part of the three stations in order to provide theoretical support for the practical design work. This article has carried on the analysis and the research mainly from the following aspects. For the torque transmission mechanism of transmission station, a method of using magnetic gear instead of traditional mechanical gear for torque transfer is put forward. The magnetic gear set is modeled by SolidWorks software, and the magnetic gear set is simulated by Maxwell software. The orthogonal test table with four factors and three levels was designed by introducing the method of orthogonal experiment, and nine groups of simulation tests were obtained. The simulation results are obtained by simulation. The results are analyzed to verify the significance of each factor in the simulation. In the simulation results, considering the cost and torque transfer requirements, the final remanence magnetic is 1.17T, the number of magnetic poles is 8, the coercive force is 876kA / m, and the magnetic gear set with 0.6mm spacing is the optimal combination. Finite element analysis is carried out to check the strength and deformation of the manipulator under load. The maximum deformation displacement of the manipulator is 6.718x10x5m and the maximum stress is 27.887MPa by statics analysis. The maximum stress is less than the allowable stress, so the manipulator can work normally under load. Then the method of topology optimization is used to get the material removal scheme of the structure, and the goal of reducing the weight of the structure by 40% is realized. Finally, the modal analysis of the optimized structure is carried out, and the stability of the optimized structure is analyzed. By comparing the natural frequencies and self-excited frequencies of each mode, it is concluded that resonance will not occur in the driving source during operation. The selection of ball screw and the stability of working parameters of synchronous belt system are analyzed and calculated in the testing station, which provides the theoretical basis for design and selection, guarantees the stability of synchronous belt, and avoids the bad phenomena such as tooth creeping and so on.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TN873

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本文編號(hào)：2453703