2012年机械专业英语考点大全.pdf

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1、冬瓜供货叫兽出品单词15’’ferrousmetals黑色金属splippagen.滑动；打滑nonferrousmetals有色金属criticaln.临界点adj.批评的hardnessn.硬度screwn.螺钉foundryn.铸造（车间，厂）studn.螺栓copper-basealloys铜基合金nutn.螺母n.坚果；核心pressn.压力机v.压锻connectingrod连杆sizingoperations精锻工艺；精加工couplingn.联轴器furnacen.（熔，炼，高）炉lubricantn.润滑剂，a.润滑的pyrometern.高温计lead-screw导杆；丝杆

2、solderv.软钎焊kineticenergy动能meltingpoint熔点frictionn.摩擦（力）electroden.电（焊）极hingen.铰链machiningn.切削加工washern垫圈[片]grindingn.磨削加工spacern.垫圈，垫片annealingn.退火finishn.表面粗糙度quenchn.v.淬火twistdrills麻花钻temperingn.回火rakeangle前角modulusofelasticity弹性模量swarfn.金属屑lowcarbonsteel低碳钢built-up-edge切削瘤high-speedsteel高碳钢tolera

3、ncen.公差；容差meshv.啮合；配合torquen.扭矩right-handthreads右旋螺纹chipn.切屑pitchn.节[螺，齿]距roughingoperation粗加工leadn.导程finishingoperation精加工rackn.齿条；导轨inertian.惯性（物）；惯量followern.从动件linkagen.连杆（组、机构）简答轴承种类：sliding-contactbearings滑动轴承rolling-contactbearings滚动轴承angular-contactbearings角接触球轴承groove-ballbearings深沟球轴承CAD:C

4、omputer-aideddesignCAM:Computer-aidedmanufacturingCNC:ComputerisedNumericalControlDNC:DirectNumericalControl两类金属：simplemetalsalloys铸造工艺步骤：foundryprocessesFoundryprocessesconsistof①makingmolds,②preparingandmeltingthemetal,③pouringthemetalintothemolds,and④cleaningthecastings.软钎焊工艺：solderingprocesses冬瓜

5、供货叫兽出品Solderingistheprocessofjoiningtwometalsbyathirdmetaltobeappliedinthemolten（adj.融化的）state.软焊是要用溶融状态的第三种金属来使两件金属连接在一起的工艺。材料力学特性定义：ThedefineofmaterialsmechanicalpropertiesSomeimportantmechanicalpropertiesofmaterialsare:(1)Strength强度(intension,compression,shearandbending)(2)Stiffness刚度(3)Ductillty

6、延展性(4)Impactstrength冲击强度(5)hardness硬度(6)Toughness韧度齿轮种类：gearsSpurGear直齿轮HelicalGear斜齿轮straightbevel直齿锥齿轮皮带传动是否精确？为什么SmoothflatbeltsandVbeltsdependonfrictiononthepulleysandsomeslippageisinherentintheiroperation.Therefore,speedratiosarenotprecise.列举几种机械零件：mechanicalpartskey键spring弹簧shaft轴screw螺钉cam凸轮c

7、oupling联轴器clutch离合器worm蜗杆wormgear蜗轮键的类型：squarekey方键taperedkey锥形键woodruffkey半圆键列举磨床：grindermachinescuttergrinder工具磨床surfacegrinder平面磨床internalgrinder内圆磨床externalgrinder外圆磨床切削-各种切削方法：cuttingoperationtur