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摘 要
摘要：曲柄連桿是若干構(gòu)件用低副連接成的機(jī)構(gòu)。曲柄連桿機(jī)構(gòu)中的構(gòu)件大都可以表示為桿狀，故亦稱其為桿.由于低副是圓柱面或平面接觸,使得平面連桿機(jī)構(gòu)具有制造容易、運(yùn)動(dòng)副中壓強(qiáng)和磨損較小、便于潤滑等優(yōu)點(diǎn)，因此平面連桿機(jī)構(gòu)廣泛用于天各種機(jī)械及儀器中。但是，這種機(jī)構(gòu)運(yùn)動(dòng)副磨損后會(huì)形成間隙，當(dāng)構(gòu)件數(shù)目較多時(shí)，會(huì)使從動(dòng)件產(chǎn)生較大的運(yùn)動(dòng)累積誤差，不容易精確地實(shí)現(xiàn)復(fù)雜的運(yùn)動(dòng)規(guī)律。
關(guān)鍵詞： 曲柄 連桿。
Abstract
Crank connecting bar is a mechanism that severial mechanical components are connected by low counter gear. The mechanical components of crank connecting bar can normally be expressed as rodlike forms, so we can also called it “bar”. Due to low counter gear indicats a cylindrical surface contact or a plane surface contact，planar linkage mechanisms has a numbers of advantages such as easy manufacture, relatively small pressure and abrasion of kinematic pair, and easier lubrication, so which has been widely used in various machinery and apparatus. However, a gap will be formed after this kind of mechanism of kinermatic pair is fretted away. Followers will lead to accumulated error of movement when there is a relative large number of mechanical components, so which is not easy to precisely realize the complicated law of motion.
Key words: crank connecting bar