180-185柴油機(jī)連桿孔研磨裝置設(shè)計(jì)

目   錄

前言 1
中文摘要 2
ABSTRACT 3
1緒論 4
2方案的擬定 9
2.1 方案的分析 9
2.2 方案的比較和確定 10
3 設(shè)計(jì)計(jì)算 14
3.1 連桿大小頭內(nèi)孔面積計(jì)算 14
 3.2 計(jì)算傳遞功率 14
 3.3 選擇主電機(jī) 14
 3.4 主軸的傳遞功率及轉(zhuǎn)速 14
3.5 帶傳動(dòng)設(shè)計(jì)計(jì)算 15
3.6 皮帶的選擇 17
 3.7 主軸設(shè)計(jì) 18
 3.8 鍵的選擇 24
 3.9 軸承的選擇 24
4 研磨頭部分的設(shè)計(jì) 30
 4.1 研具材料的選擇 30
 4.2 研磨棒的結(jié)構(gòu) 30
 4.3 研磨操作工藝系數(shù)的選取 31
 4.4 研磨膏的配制 31
5 導(dǎo)軌及其其他結(jié)構(gòu)的設(shè)計(jì) 32
6 重點(diǎn)分析 35
 6.1 主軸支撐部分的分析 35
 6.2 軸承的潤(rùn)滑 36
 6.3 皮帶松緊的調(diào)整 37
7 使用及維護(hù) 39
8 設(shè)計(jì)中值得改進(jìn)之處 40
參考資料 41
 
 
摘 要

連桿是柴油機(jī)中非常重要的一個(gè)部件，它連接了活塞與曲軸，把作用在活塞頂面的氣體膨脹的力傳給曲軸，實(shí)現(xiàn)把活塞的往復(fù)運(yùn)動(dòng)變?yōu)榍S的旋轉(zhuǎn)運(yùn)動(dòng)。因此連桿在工作中承受著劇烈變化的動(dòng)載荷和承受著瞬變的旋轉(zhuǎn)壓力。連桿在運(yùn)動(dòng)中形成的慣性力和離心力相當(dāng)大。在這樣的工作條件下，要求連桿有強(qiáng)度高、重量輕、剛性好、韌性強(qiáng)、使用壽命長(zhǎng)的特點(diǎn)。
四川峨嵋柴油機(jī)廠的連桿大、小頭孔是在金剛鏜床上加工后進(jìn)行手動(dòng)研磨大、小頭孔，這種加工只適應(yīng)于小批量的生產(chǎn)，而對(duì)大批量的生產(chǎn)這種方式就沒有實(shí)際意義，因?yàn)檫@種加工不容易達(dá)到精度和表面粗糙度要求。為了解決這一問題，需要在加工方法上進(jìn)行改進(jìn)，使用能同時(shí)研磨大小頭孔的專用機(jī)床，以提高生產(chǎn)率，減輕勞動(dòng)強(qiáng)度，提高加工精度。所以設(shè)計(jì)了這臺(tái)能同時(shí)研磨大、小頭孔的專用研磨裝置。
我設(shè)計(jì)的機(jī)床需要滿足的要求是結(jié)構(gòu)簡(jiǎn)單、加工精度高、制造成本低、自動(dòng)化程度高、操作簡(jiǎn)單特點(diǎn)，以滿足產(chǎn)品的加工精度和大批量生產(chǎn)的需要。
關(guān)鍵詞：連桿、強(qiáng)度、壽命、改進(jìn)、效率。

 
Abstract

Connecting rod is a very improtant diesel engine component.It links the piston and crank,piston top face in the role of the expansion of the crank to enable the movement to the piston into the rotation of the crank movement.Connecting rod dramatic changes in their work bear the moving load,the D-bear pressure.Connecting rod in the working conditions for connecting rod with high intensity,light weight,although good,strong resilience,life-long characteristics.
Connecting rod sizes in the first lords boring lathe processing Kong after the first amall hand rollers Kong,which only apply to small batch processing,and then in the production of large quantities of no practical significance,since it is not easy to achieve precision processing and surface roughness.To address this problem,the need for improvement in processing methods,and equipment used to the size of the first Kong dedicated machine tools to increase productivity and reduce labor intensity,and enhance processing accuracy.
I design the machine need to meet the requirements of a simple structure, high-precision processing, manufacture low-cost, high degree of automation, easy to operate of products in order to meet the processing precision and mass production needs.
Keywords: Connecting rod.   Intensity.   life expectancy.   Improve.  Efficiency