【正文】
) (2) There is a determined relative motion between links. ( 各構(gòu)件之間有確定的相對(duì)運(yùn)動(dòng) ) (3) It can transform or transmit energy. ( 它能進(jìn)行能量的傳遞或轉(zhuǎn)換) ☆ Machine: It is a system of links that can acplish determined motion and transform energy. 5 Classification Two kinds of machine: ◆ Working machine : Machine tool ( 工作機(jī) : 機(jī)床 ) ◆ Generator: Internal bustion, electric motor ( 原動(dòng)機(jī):內(nèi)燃機(jī) ,電動(dòng)機(jī)) 6 2) Link—Motion element (rigid construction) (構(gòu)件 運(yùn)動(dòng)單元) . Crank 4+4’+4”。 Gear 5+5’+5” Including: Driving (input) link ( 原動(dòng)件 ) Driven (output) link ( 從動(dòng)件 ) Frame( 機(jī)架 ) Different with: Machine element—Manufact