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造成动平衡机转子质量分布不均匀的原因?

* 来源 : * 作者 : admin * 发表时间 : 2017-05-17 * 浏览 : 32

不平衡量是由于转子质量分布不均引起的,转子在旋转过程中产生离心力,该离心力引起机械的振动主要作用于轴承。所以,转子质量分布不均匀是造成转子不平衡最为重要的因素之一。现实的生产和工作过程中,造成动平衡机转子质量分布不均的主要原因有下列四种:

The unbalance is caused by the uneven distribution of the rotor mass, and the centrifugal force is generated during the rotation of the rotor. Therefore, the uneven distribution of rotor mass is one of the most important factors of rotor imbalance. In the process of production and operation, there are four main reasons for the uneven distribution of rotor mass:
1、转子的制造材质或毛坯的问题。在机械工程中,我们遇到很多转子的不平衡是由材料自身的原因引起的。比如,铸造转子时,原材料本身的密度分布不均,铸造的毛坯有沙眼、气孔、疏松,再加上焊缝的不均匀分布等缺陷,都有或多或少的可能产生转子不平衡。
1, the manufacture of rotor material or blank problems. In mechanical engineering, we have encountered a lot of rotor imbalance caused by the material itself. For example, cast rotor, the density distribution of the raw materials themselves are casting blank with trachoma, porosity, loose, uneven distribution of defects such as weld plus, have more or less may be caused by the rotor unbalance.
2、转子在长期工作过程中产生不平衡。转子在高速旋转过程中,会出现磨损、变形等现象,同时运行过程中可能会由于温度变化造成转子变形,再加上运行过程中离心力使零件间出现了相对的位移,这相对位移打破了原来的平衡状态,随着时间的积累,就会有明显振动的产生。
2, in the long-term work of the rotor imbalance. The rotor in high speed rotating process, there will be wear and deformation phenomenon, and operation may be due to temperature change caused by the rotor deformation process, coupled with the centrifugal force on the operation process of the parts between the relative displacement and the relative displacement to break the original balance state, over time, will produce significantly vibration.
3、转子加工和装配的问题产生不平衡。转子加工和安装时,产生了加工精度误差和安装误差,都会对转子绕轴线的质量分布造成影响,产生了转子不平衡。
3. The problem of rotor machining and assembly is unbalanced. When machining and installing the rotor, the machining accuracy error and installation error are produced, which will affect the mass distribution of the rotor axis, and the rotor unbalance.
4、转子在维修过程中的不平衡。在维修过程中,如零部件的拆卸、更换等正常技术维修,也有造成转子的质量分布不均的可能,这些对转子平衡状态的影响不能确定,时大时小。因此为了保证转子的正常工作,我们每次维修保养后必须对转子进行动平衡处理。
4, the imbalance of the rotor in the maintenance process. In the maintenance process, such as the demolition of parts, replacement and other normal technical maintenance, but also have the possibility of the uneven distribution of the mass of the rotor, these effects on the rotor balance can not be determined, when the small. Therefore, in order to ensure the normal operation of the rotor, we must balance the rotor after each maintenance.
现在的旋转机械都会用到转子,为了保障转子的平衡,就一定要用到动平衡机,只有经过动平衡机校验的设备才能够投入使用,让用户放心。
Rotating machinery will now use the rotor, in order to protect the balance of the rotor, it is necessary to use a dynamic balancing machine, only after the dynamic balancing machine calibration equipment can be put into use, so that users rest assured.