动平衡原理5.pptVIP

* The numerical value of G is equal to the product of e x expressed in millimeters per second per T r / min (rpm, revolutions per minute) rpm转速，每分钟几转 r / s (rps, revolutions per second, can use also Hz - Hertz) Rps,每秒钟几转， 也可以用赫兹 Maximum 旋转的最大工作转速 of rotation service speed 04-02-03 Balancing and Diagnostic Systems balance Quality平衡精度 It is not T 数值G等于eper x T的乘积 ，在每秒毫米中表达出来 04-03-01 Veit Bleistein - 27.Okt.1999 Balancing and Diagnostic Systems Unbalance Tolerances 不平衡量公差 Allocation to correction planes 校正面的分配 Single plane Balancing单面平衡 Symmetrical rotor permissible residual unbalance in 1 plane 对称转子在平面1上 可允许剩余不平衡量 “static balancing” 静平衡 1 U p e r 1 U p e r 1 = U p e r U p e r ISO 1940-1 chapter 3.3 6.3 7.2 04-03-02 Veit Bleistein - 27.Okt.1999 Balancing and Diagnostic Systems Unbalance Tolerances不平衡量的公差 Allocation to correction planes 校正面的分配 Symmetrical set-up Symmetrical rotor permissible residual unbalance in 2 planes close to bearing planes 对称性转子在平面2 靠近支承平面处的可允许剩余不平衡量 U p e r 2 = U 2 p e r ISO 1940-1 chapter 7.3.1 U p e r 1 = 1 2 U p e r 1 U p e r 2 U p e r 04-ex. Veit Bleistein - 27.Okt.1999 Balancing and Diagnostic Systems Unbalance Tolerances 不平衡量的公差 Exercise 练习 Exercise 练 习 ISO 1940-1 r 1 r 2 Example 实例 rotor type 转子类型 Armature电枢转子 rotor mass 转子质量 m = 100 kg service speed 工作转速 n = 3000 1/min correction radius 校正半径 r = r = 100 mm 1 2 quality grade 平衡精度 G perm. unbalance mass per plane 每个平面可允许不平衡质量 u per 1 = u per 2 = perm. res. unbalance per plane 每个平面可允许剩余不平衡量 U per 1 = U per 2 = permissible specific unbalance 可允许不平衡量（总） (total) e = perm. residual unbalance (total) 可允许剩余不平衡量（总） U per = 04-03-05 Veit Bleistein - 27.Okt.1999 Balancing and Diagnostic Systems Unbalance Tolerances 不平衡量的公差 Allocation to correction planes校正面的分配 Symmetrical set-up 对称结构 Symmetrical