申克动平衡原理ppt课件

Unbalance consequences,causes,definitions.Fundamentals-Part 1 unbalance,C.o.G.,eccentricity,centrifugal force,vektor.Fundamentals-Part 2 axial unbalance distribution on rigid rotors,types of unbalances.Balancing andDiagnostic SystemsTolerances quality grade,allocation of balancing planes.Measuring Unbalance balancing machines,accomodation,drive,measuring principles.Balancing speed determined by balancing maschine,rotor,economy,safety.Correction of Unbalance types of correction(add,remove,shift),economy,errors,tolerance.Errors phenomena,causes,types,cure(typical examples).State of a Rotor rigid rotor(constant behaviour),other rotors(variable ).Addentum articles.不平衡量结果，原因，定义基本原理第一节不平衡量，偏心，离心力，振动基本原理第二节在刚性转子上的轴向不平衡量的分配，不平衡量的类型公差质量等级，平衡面的分配测量不平衡量平衡机，安置，驱动，测量原理平衡速度的确定平衡机，转子，整体，安全性不平衡量的校正校正类型（加重，去重，移动质量），整体，误差，公差错误现象，原因，类型，诊断（典型例子）转子的状态刚性转子（固定特性），其他转子（变量）附录条款Unbalance consequences,causesMass-axisShaft-axisHatto Schneider,19.2.98,VB-09-Oct-2000Seminar-Chapter-Subject-Page 11-07-00-01Balancing andDiagnostic SystemsAimPrinciplesUnbalance Correction 1aim,2 principlesAim of balancing:Shaft-axis and Mass-axis coincideUsual situation;unbalanced:不平衡量的校正1个目的，2个原理平衡的目的：使轴线与质心线重合通常位置；不平衡的质心轴轴中心线目的原理Mass-axisShaft-axisHatto SchneHatto Schneider,19.2.98,VB-09-Oct-2000Aim of balancing:Shaft-axis and Mass-axis coincide2 Priciples:1.Mass-axis is moved by:Additon of massRemoval of massShifting of mass2.Shaft-axis is moved by:Mass-centering(in one or two planes)Typical application:crankshaft (eccentric rework of shafts makes new shaft axis)Seminar-Chapter-Subject-Page 11-07-01-01Balancing andDiagnostic SystemsAimPrinciplesUnbalance Correction 1aim,2 principlesMass-axis is moved towards shaft-axisShaft-axis is moved towards mass-axis不平衡量的校正1个目的，2个原理平衡目的：使轴线与质心线重合2个原理：质心轴线移向轴心线质心轴线移动通过：加重去重质量移动原理目的轴心线移向质心线轴心线移动通过：质量定中心（在一个或2个平面）典型应用：曲轴轴的离心重新加工产生新的轴心线Hatto Schneider,19.2.98,VB-0Hatto Schneider,19.2.98Hatto Schneider,26.2.98Balancing andDiagnostic SystemsSeminar-Chapter-Subject-Page 11-07-02-01Unbalance Correctionprinciple:adding massaddingmassE.g:Screw,washer,radial applicationSelection on measuring system不平衡量的校正原理：加重在测量系统上选择加重例如：螺钉，垫圈，在半径方向上应用Hatto Schneider,19.2.98Hatto Hatto Schneider,19.2.98Hatto Schneider,26.2.98Balancing andDiagnostic SystemsSeminar-Chapter-Subject-Page 11-07-02-02Unbalance Correctionremoving massremovingmassE.g:Drilling,radialSelection on measuring system不平衡量的校正去重在测量系统上选择例如：钻削，半径方向上去重Hatto Schneider,19.2.98Hatto 2.3 masses1 or 2 planesHatto Schneider,19.2.98,VB-09-Oct-2000Seminar-Chapter-Subject-Page 11-07-02-04Balancing andDiagnostic SystemsShiftingmassesUnbalance Correctionshifting of masses不平衡量的校正质量移动移动质量23 质量块1或2个平面2.3 masses1 or 2 planesHatMass-axisAfter machining the shaft(removal of the red part)Application example:This is done on crankshafts to reduce the initial unbalance,etc.the shaft axis is in line withthe mass-axisGeometrical axisHatto Schneider,19.2.98,VB-09-Oct-2000Seminar-Chapter-Subject-Page 11-07-02-05Balancing andDiagnostic SystemsMass centeringUnbalance Correctionprinciples不平衡量的校正原 理质心轴加工好轴后（切除了红色部分），轴线与质心线重合了应用事例有在曲轴上加工减少初始不平衡量，等等几何轴质量定中心Mass-axisAfter machining the sr r1r2t1tHatto Schneider,19.2.98,VB-09-Oct-2000Seminar-Chapter-Subject-Page 11-07-03-01Balancing andDiagnostic SystemsEffective correctionDrilling,radialUnbalance Correctioneffective unbalance correction over depth,radial penetrationThis curve can be calculated by software(option for measuring systems)or taken from a table不平衡量的校正深度半径方向穿孔的有效不平衡量校正有效的校正，半径方向钻削曲线值可以通过软件（测量系统的选项）计算出，或者从表格中得出。深度钻削，半径方向r r1r2t1tHatto Schneider,19.2jjj90180000.51.0U/Ueff.maxr2r1Hatto Schneider,19.2.98,VB-09-Oct-2000Seminar-Chapter-Subject-Page 11-07-03-02Balancing andDiagnostic SystemsUnbalance CorrectionEffective correctionMilling,circumf.12不平衡量的校正有效校正：铣削圆周面jjj90180000.51.0U/Ueff.max