發(fā)布時(shí)間：2018-03-07 14:00

  本文選題：機(jī)器視覺(jué)　切入點(diǎn)：伺服定位　出處：《蘇州大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著科技的不斷發(fā)展,電子產(chǎn)品的更新?lián)Q代越來(lái)越快,并促成了國(guó)內(nèi)對(duì)IC芯片、三極管等電子組件的需求不斷增加。作為電子組件骨架的IC導(dǎo)線架(Lead Frame)需求量也不斷增加。IC導(dǎo)線架又稱為引線架或花架,為IC的骨干,扮演IC與PCB之間的接口角色。IC導(dǎo)線架的制造屬于IC制造業(yè)的上游產(chǎn)業(yè)。本研究課題在參考借鑒國(guó)內(nèi)外卷式電鍍生產(chǎn)線的基礎(chǔ)上,設(shè)計(jì)并實(shí)現(xiàn)了基于機(jī)器視覺(jué)的高精度IC導(dǎo)線架電鍍生產(chǎn)線控制系統(tǒng),闡述了機(jī)器視覺(jué)檢測(cè)、伺服定位控制、變頻調(diào)速、超聲波測(cè)距等技術(shù)在高精度卷式IC導(dǎo)線架電鍍生產(chǎn)線上的應(yīng)用,解決了傳統(tǒng)的使用伺服與PLC控制系統(tǒng)的電鍍生產(chǎn)線存在的問(wèn)題。本控制系統(tǒng)的優(yōu)勢(shì)在于:(1)基于機(jī)器視覺(jué)檢測(cè)技術(shù)對(duì)定位孔重心位置進(jìn)行測(cè)量,將測(cè)量值與目標(biāo)值比較并計(jì)算出位置誤差,然后通過(guò)伺服系統(tǒng)對(duì)誤差進(jìn)行及時(shí)補(bǔ)償從而實(shí)現(xiàn)精準(zhǔn)定位。在鍍銀精度上由原來(lái)的±8MIL(1MIL=0.0254mm)提高到現(xiàn)在的±4MIL。(2)基于超聲波測(cè)距與變頻調(diào)速,通過(guò)超聲波測(cè)距對(duì)前后緩沖輪的高度進(jìn)行測(cè)量并計(jì)算出生產(chǎn)速度,然后通過(guò)PLC控制變頻器及時(shí)調(diào)整生產(chǎn)速度,防止速度變化過(guò)大影響生產(chǎn)工藝,從而實(shí)現(xiàn)工藝穩(wěn)定。(3)通過(guò)有效技術(shù)整合與算法優(yōu)化,研制了一套新的卷式IC導(dǎo)線架電鍍控制系統(tǒng),較傳統(tǒng)的控制系統(tǒng)具有優(yōu)勢(shì),表現(xiàn)為精度高、速度快、非接觸檢測(cè)等優(yōu)點(diǎn)。生產(chǎn)實(shí)踐表明使用新控制系統(tǒng)的IC導(dǎo)線架生產(chǎn)線,徹底解決了定位針打傷產(chǎn)品等問(wèn)題,且具有位置偏差補(bǔ)償功能——當(dāng)位置偏差過(guò)大并超出補(bǔ)償位置時(shí),可以及時(shí)提示操作人員處理,避免了因誤定位造成產(chǎn)品的大量報(bào)廢。
[Abstract]:With the continuous development of science and technology, the upgrading of electronic products is becoming faster and faster, which has contributed to the development of IC chips in China. The demand for electronic components, such as Triode, is increasing. The demand for IC traverse frame, as the skeleton of electronic components, is also increasing. The IC traverse frame, also known as lead frame or flower frame, is the backbone of IC. As the interface between IC and PCB, the manufacture of IC traverse frame belongs to the upstream industry of IC manufacturing. The control system of high precision IC traverse rack electroplating production line based on machine vision is designed and realized. Machine vision detection, servo positioning control, frequency conversion speed regulation are described. The Application of Ultrasonic ranging Technology in the Electroplating production Line of High Precision Coil IC Traverse frame, The traditional electroplating production line using servo and PLC control system is solved. The advantage of this control system is that the center of gravity of the positioning hole is measured based on machine vision detection technology. The measurement value is compared with the target value and the position error is calculated. Then the error is compensated by the servo system in time to achieve accurate positioning. The accuracy of silver plating is improved from 鹵8MIL / 1MIL 0.0254mm) to 鹵4MIL / L / 2) based on ultrasonic ranging and frequency conversion. The height of the front and rear buffers is measured by ultrasonic distance measurement and the production speed is calculated. Then the frequency converter is controlled by PLC to adjust the production speed in time to prevent the change of speed from greatly affecting the production process. Therefore, through effective technical integration and algorithm optimization, a new electroplating control system for coil IC traverse frame is developed, which has advantages over the traditional control system, and is characterized by high precision and high speed. The production practice shows that the IC traverse frame production line with the new control system has completely solved the problem of positioning pin wound products, and has the function of position deviation compensation when the position deviation is too large and exceeds the compensated position. Can prompt operators to handle, avoid a large number of product scrap due to mispositioning.
【學(xué)位授予單位】：蘇州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN05

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本文編號(hào)：1579588