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鹽城工學(xué)院機(jī)械工程系畢業(yè)設(shè)計(jì)說(shuō)明書
摘 要
眾所周知,筆記本電腦主板的生產(chǎn)分為SMT和PCBA兩部分,目前,SMT
已實(shí)現(xiàn)全自動(dòng)生產(chǎn),而PCBA則主要進(jìn)行人工作業(yè).為了提高工作效率,節(jié)
省時(shí)間,增加經(jīng)濟(jì)效益和社會(huì)效益,故進(jìn)行筆記本電腦主板裝配線(輸送帶)
及主要夾具設(shè)計(jì)
本設(shè)計(jì)主要包括以下內(nèi)容:
一. 確定主板裝配線各工位之間的間距及裝配線總長(zhǎng)
二. 確定裝配線的調(diào)速方法,設(shè)計(jì)傳動(dòng)系統(tǒng).
三. 輸送帶材料的選擇及其結(jié)構(gòu).
四. 皮帶輸送機(jī)的支架及其張緊裝置的設(shè)計(jì).
五. 確定主要夾具的安裝位置及定位夾緊形式,且進(jìn)行結(jié)構(gòu)設(shè)計(jì)
各工位之間的間距由各工位中的較長(zhǎng)時(shí)間,即所謂的瓶頸時(shí)間與輸送帶速來(lái)確定,用公式表示為S=V*T, 裝配線總長(zhǎng)由間距與工位數(shù)共同確定.
本裝配線的調(diào)速方法采用調(diào)頻電機(jī)調(diào)節(jié)電機(jī)的轉(zhuǎn)速,從而間接調(diào)節(jié)輸
送帶速. 本系統(tǒng)采用蝸桿減速機(jī),電機(jī)與蝸桿減速機(jī)之間采用普通V帶傳
動(dòng), 蝸桿減速機(jī)與輸送帶的驅(qū)動(dòng)滾筒之間采用鏈傳動(dòng).
因?yàn)楣P記本電腦主板上附有許多電子元件,其本身也是印刷電路板,
因此對(duì)輸送帶提出了防靜電的特殊要求,所以本輸送帶采用綠色PVC材料
關(guān)鍵字:筆記本電腦主板 輸送帶 傳動(dòng) 夾具
Abstract
As everyone knows the production of the main board of the notebook computer is divided into SMT and PCBA two parts, At present, SMT has already realized that has been produced full- automatically, but PCBA carries on the artificial homework mainly . For working efficiency of raising, saves time, increase the economic benefits and social benefit, Carry on notebook computer main board assembly line( conveyer belt) and the main jig is designedded Originally design and include the following content mainly: First. confirm main board assembly line interval and the assembly line two of the total lengths of location per worker.last the not transfering speed method of of assembly line, Design the transmission. Whether three.send choice and the structure not with material. Whether four.belt the the conveyers one the supports and pieces of device of design not urgent. Five. position installation of the jig mainly and made a reservation by form of clamping, and carry on there aren't structure, Namely so-called bottle time and conveyer belt, i of ?, come and confirm , show with the formula for S rapidly =V * T, assembly line the total length is confirm together by the interval and worker's -figure number. To transfer speed method adopt electrical machinery of frequency modulation regulate the rotational speed of the electrical machinery assembly line this, Thus regulate the speed of conveyer belts indirectly. System this adopt worm moderate machine, electrical machinery and worm moderate plane adopt ordinary V bring transmission, Worm moderate plane and drive cylinder of conveyer belt adopt chain transmission. Because notebook computer main board enclose a lot of electronic elements, its itself is the printed circuit board too, So put forward defend special request of static to conveyer belt, so a conveyer belt adopts green PVC material
Key word: Main board of the notebook computer Transmission of the conveyer belt Jig
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