發(fā)布時(shí)間：2019-05-20 05:39

【摘要】：伴隨著微電子技術(shù)的快速發(fā)展，集成電路芯片逐漸向深亞微米方向發(fā)展，電子元器件的微型化和高功能化使得封裝變得要求更高，這些都給SMT領(lǐng)域帶來(lái)了不小的挑戰(zhàn)。SMT的核心設(shè)備是貼片機(jī)，也正朝著多功能、高速度、高精度方向發(fā)展，貼片機(jī)是一個(gè)集機(jī)械、光學(xué)、電學(xué)等多學(xué)科于一體的產(chǎn)品，主要由機(jī)械系統(tǒng)、視覺(jué)系統(tǒng)和控制系統(tǒng)組成，本課題主要研究貼片機(jī)的機(jī)械系統(tǒng)，包括框架結(jié)構(gòu)和運(yùn)動(dòng)系統(tǒng)。對(duì)于貼片機(jī)而言，貼裝速度和精度的高要求使得機(jī)械結(jié)構(gòu)的性能變得至關(guān)重要。 本論文利用ADAMS軟件為工具建立虛擬樣機(jī)模型，通過(guò)理想模型和原模型的仿真結(jié)果對(duì)比來(lái)分析各個(gè)因素對(duì)貼裝頭的動(dòng)態(tài)精度影響，并根據(jù)結(jié)論找到提高貼裝頭定位精度的方法。 利用有限元分析軟件對(duì)重要構(gòu)件進(jìn)行靜力學(xué)分析，，通過(guò)計(jì)算和得出的應(yīng)力云圖、位移云圖找出構(gòu)架中應(yīng)力集中和易變形的位置，然后通過(guò)改良設(shè)計(jì)來(lái)提高機(jī)械系統(tǒng)的靜剛度。 利用有限元分析軟件對(duì)主要構(gòu)件以及整機(jī)簡(jiǎn)化系統(tǒng)進(jìn)行模態(tài)分析，對(duì)比固有頻率和振型圖，對(duì)其進(jìn)行結(jié)構(gòu)改進(jìn)使其固有頻率遠(yuǎn)離驅(qū)動(dòng)頻率來(lái)避免共振的出現(xiàn)，同時(shí)對(duì)跨度大，易變形的構(gòu)件進(jìn)行剛度提高改進(jìn)，具體措施本文也提到了一些，來(lái)實(shí)現(xiàn)貼片機(jī)整機(jī)的動(dòng)態(tài)特性優(yōu)化。 本論文的研究對(duì)象是自主研發(fā)的一臺(tái)高檔貼片機(jī)，通過(guò)動(dòng)態(tài)分析和結(jié)構(gòu)優(yōu)化，樣機(jī)的精度和速度已經(jīng)基本達(dá)到10000片/小時(shí)的速度和20um-50um的精度設(shè)計(jì)目標(biāo)。
[Abstract]:With the rapid development of microelectronics technology, integrated circuit chips are gradually developing in the direction of deep submicron. The miniaturization and high functionalization of electronic components make packaging more demanding. These bring a lot of challenges to the field of SMT. SMT's core equipment is placement machine, which is also developing in the direction of multi-function, high speed and high precision. SMT is a multi-disciplinary product, such as machinery, optics, electricity and so on. It is mainly composed of mechanical system, visual system and control system. This paper mainly studies the mechanical system of placement machine, including frame structure and motion system. For the placement machine, the high requirements of mounting speed and accuracy make the performance of the mechanical structure become very important. In this paper, the virtual prototype model is established by using ADAMS software as a tool, and the influence of each factor on the dynamic accuracy of the mounting head is analyzed by comparing the simulation results of the ideal model with the original model, and the method to improve the positioning accuracy of the mounting head is found according to the conclusion. The static analysis of important components is carried out by using finite element analysis software. The position of stress concentration and easy deformation in the frame is found out by calculating and obtaining stress cloud diagram and displacement cloud diagram, and then the static stiffness of mechanical system is improved by improved design. The modal analysis of the main components and the simplified system of the whole machine is carried out by using the finite element analysis software. The natural frequency and vibration mode diagram are compared, and the structure is improved so that the natural frequency is far away from the driving frequency to avoid the occurrence of resonance, and at the same time, the span is long. The stiffness of the easily deformed members is improved, and some concrete measures are also mentioned in this paper to optimize the dynamic characteristics of the patch machine. The research object of this paper is a high-grade placement machine developed by ourselves. through dynamic analysis and structure optimization, the accuracy and speed of the prototype have basically reached the speed of 10000 chips per hour and the precision design goal of 20um-50um.
【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TN405

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 王成,王效岳;虛擬樣機(jī)技術(shù)及ADAMS[J];機(jī)械工程與自動(dòng)化;2004年06期

本文編號(hào)：2481397