Nomenclatureforaninvolutespurgear渐开线直齿专门术语1-face齿顶面2-flank齿根面3-bottomland齿根4-pitchcircle节圆5-clearancecircle顶隙圆6-dedendumcircle齿根圆7-filletradius过渡圆半径8-widthofspace齿槽宽度9-circularpitch圆弧节距10-tooththickness齿厚11-clearance顶隙12-facewidth齿宽13-topland齿顶面14-addendum齿顶高15-dedendum齿根高16-outsidecircle齿顶圆基准齿条(StandardRack):只基圆之尺寸,齿形,全齿高,齿冠高及齿厚等尺寸均合乎标准正齿轮规格之齿条,依其标准齿轮规格所切削出来之齿条称为基准齿条.基准节圆(StandardPitchCircle):用来决定齿轮各部尺寸的基准圆.为齿数x模数基准节线(StandardPitchLine):齿条上的一条特定节线或沿此线测定之齿厚,为节距的二分之一.作用节圆(ActionPitchCircle):一对正齿轮在咬合作用时,各有一相切做滚动的圆.基准节距(StandardPitch)：以选定的标准节距做基准者,与基准齿条的节距相等.节圆(PitchCircle):两齿轮连心线上的咬合接触点在各齿轮上留下的轨迹称为节圆.节径PitchDiameter):节圆直径.全齿高(WholeDepth):齿冠高与齿根高之和.有效齿高(WorkingDepth):一对正齿轮齿冠高的和.又称工作齿高.齿冠高(Addendum):齿顶圆与节圆半径的差.齿根高(Dedendum):节圆与齿底圆半径的差.齿厚(ToothThickness):沿节圆量测的齿厚.齿隙(Backlash):两齿咬合时,齿面与齿面的间隙.齿宽(FaceWidth):轴径方向的齿轮厚度.齿顶隙(Clearance):两齿咬合时,一齿轮的齿顶圆与另一齿轮底间的空隙.节点(PitchPoint):一对齿轮咬合与节圆相切的点.基圆(BasicCircle):绘制渐开线齿形时作为基础之圆.齿根圆(DedendumCircle):通过齿根之圆.节距(Pitch):相邻两齿间相对应点的弧线距离.法向节距(NormalPitch):渐开线齿轮沿特定断面的同一垂线所测得的节距.齿轮及齿轮加工相关英语词汇1abrasivetoothwear齿面研磨磨损2absolutetangentialvelocity绝对切向速度3accelerometer加速表4addendum齿顶高5addendumangle齿顶角6addendumcircle齿顶圆7addendumsurface上齿面8adhesivewear粘着磨损9adjustability可调性10adjustabilitycoefficients可调系数11adjustingwedge圆盘端铣刀的可调型楔块12allowablestress允许应力13alternatebladecutter双面刀盘14angularbacklash角侧隙15angularbevelgears斜交锥齿轮16angulardisplacement角移位17angularpitch齿端距18angulartestingmachine可调角度试验机19approachaction啮入20arbor心轴21arbordistance心轴距22arcofapproach啮入弧23arcofrecess啮出弧24attraction收紧25averagecutterdiameter平均刀尖直径26axialdisplacement轴向位移27axialfactor轴向系数28axiallocatingsurface轴向定位面29axialpitch轴向齿距30axialplane轴向平面31axialrakeangle轴向前角32axialthrust轴向推力33axletestingmachine传动桥试验机B1backangle背锥角2Backangledistance背角距（在背锥母线方向）3Backcone背锥4Backconedistance背锥距5Backconeelement背锥母线6Backlash侧隙7Backlashtolerance侧隙公差8Backlashvariation侧隙变量9Backlashvariationtolerance侧隙变量公差10Bandwidth频带宽11Basecircle基圆12Basediameter基圆直径13Basepitch基节14Baseradius基圆半径15Basespiralangle基圆螺旋角16Basicrack基本齿