Working Principle Of Balancing Machines
According to the balancing machine measuring on rotor unbalance correction can improve the mass distribution of the rotor relative to the axis, causes the rotor to spin with vibration or vibration force acting on the bearing is reduced to within the allowed range. Therefore, the balancing machine is to reduce vibration and improve performance and improve the quality of the essential equipment.
In General, the measurement and correction of the unbalance of rotor balancing includes two steps, balancing machine is mainly used for unbalance measurement, and the volume of imbalances correction is often through the drilling machines, milling machines, and other auxiliary equipment, spot welding machine, or hand-finished. Some balancing machine calibration unit has been doing to become part of the balancing machine.
Balanced gravity and centrifugal force balancing machine is two types of balancing machines. Gravity balance machines commonly known as static balancing machine. It relies on gravity to measure the static imbalance of the rotor itself.
Be balanced rotor with static pressure bearing supports, supports the following embedded in a mirror. When the rotor is not when there is an imbalance, by light emitted after this reflector, the beam onto unbalance indicator of the origin of polar coordinates. If the rotor unbalance unbalance weight of rotor bearing moment of tilt, also tilted the support under the mirror and reflected beam deflection, beam spot in polar coordinates on the indicator light point moved away from the origin. According to the coordinates of the points of light deflection, the size and position of unbalance can be.
Gravity balance only applies to some balance requirements of disk-shaped parts. Balance requirements of the rotor, centrifugal single-sided or double-sided balance machine is usually adopted.
Centrifugal balancing machines is under rotor rotation, according to rotor-bearing vibration caused by imbalance or acting on the bearing vibration measurement of imbalance. According to the different number of correction planes, can be divided into single balancing machines and two-plane balancing machine. Single imbalance on the balancing machine can measure only one plane (static imbalance), although it is measured in the rotor spins, but still belong to the static balancing machine. Double-sided balance function measurement of dynamic unbalance can also measure the static unbalance and the couple unbalance, commonly known as the balancing machine.
Centrifugal balancing machines by supporting different characteristics, can be divided into soft bearing balancing machine and hard bearing balancing machine. Balancing speed higher than the natural frequency of rotor-bearing system referred to as soft bearing balancing machine. This balance of stiffness of small vibration sensors detect the signal and supports proportional to displacement. Balancing speed lower than the natural frequency of rotor-bearing system known as hard-bearing balancing machines, this balance of stiffness, sensors detect the signal proportional to the bearing vibrations.
According to the needs of mass production, can automatically complete the balance of the rotor of the specific measure and balance correction of automatic balancing machine and automatic balance, Hyundai has a lot of equipment in automobile manufacturing, motor manufacturing and other industrial sectors.