Due to the small deformation generated when the machine tool spindle rotates, it is treated as a balancing method for rigid rotors in order to simplify the calculation. The rotor is regarded as an absolute rigid body, and it is assumed that no significant deformation of the rotating shaft occurs due to the unbalanced centrifugal force during operation. For this reason, many complex unbalanced states of rigid rotors under these conditions can be simplified to deal with unbalanced force systems. That is, two equivalents of Ud1 and Ud2 can be added or subtracted in any two selected planes. Balancing power balances.
Rigid rotor dynamic balance is generally low-speed dynamic balance, generally less than 1/3 of the first critical speed.
Unbalance: The state of rotor mass distribution caused by vibration or motion due to centrifugal force.
Residual imbalance U: Imbalance left after balance treatment.
Relative unbalance e: the value obtained by dividing the imbalance by the mass of the rotor, which is equal to the displacement of the centrifugal force with respect to the center of the shaft.
The degree of balance G: is the product of the relative imbalance and the specified angular velocity.
Balance processing: The job of adjusting the rotor mass distribution so that the vibration and force acting on the bearing in synchronism with the rotation speed are within the specified limits.
Full key: This is the key used for the final assembly of the rotary shaft with the keyway and the mating part, or the equivalent key.
Half key: It is the key used when performing the balancing process separately for a rotary shaft or a mating part with a keyway. This imbalance is equivalent to the key used in the final assembly (unbalanced in the keyway of the rotating shaft or mating part).
Precautions for using kingdao electric Pressure Cooker
1. When using kingdao electric pressure cooker, it cannot be placed next to high-temperature gas or electric furnace for use, while the inner pot of electric pressure cooker cannot be directly heated on an open fire to prevent deformation.
2. When cooking, do not directly touch the float valve and lid of the pressure cooker to prevent scalding.
3. Before using the electric pressure cooker, it is necessary to check whether the exhaust hole of the electric pressure cooker is unblocked and whether there are residual rice grains or other food residues under the safety valve of the pressure cooker to avoid being blocked by food during use.
4. The electric pressure cooker needs to be cleaned in time after use. At the same time, check whether there are food residues in the safety plug of the electric pressure cooker. When cleaning the inner pot of the electric pressure cooker, do not use too sharp cleaning appliances.
What is the difference between kingdao intelligent Electric Rice Cooker and electric pressure cooker
1. The functions are different, but now many electric Rice Cookers can replace the pressure cooker, and the taste of the cooked rice is better than that of their own.
2. When buying an intelligent rice cooker, the functions are relatively complete. There are many opportunities to use it at ordinary times. I feel that it is more cost-effective. It can not only be used to cook rice, but also cook porridge, soup, stew, make Italy and cake. It is controlled by buttons. The operation process will be displayed on the display screen. It is very easy, and the taste is absolutely no worse than that of the pressure cooker.
3 if you don't have much time to cook at ordinary times, it's better to use an electric rice cooker. It has a 24-hour reservation function. You can make an appointment to cook and cook according to the menu given in the manual. You can cook 30 different meals
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