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Dynamic balance emendation method of flexible rotor
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A flexible rotor and calibration method technology, applied in static/dynamic balance testing, machine/structural component testing, measuring devices, etc. The effect of vibration speed
Inactive Publication Date: 2008-08-20
HARBIN DONGAN ENGINE GRP
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Problems solved by technology
The dynamic balance of flexible rotors is different from that of rigid rotors. The balance method using rigid force transfer theory cannot eliminate the vibration of flexible rotors, nor can it achieve the purpose of balance.
Method used
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Embodiment 1
[0041] A material is aluminum alloy 2024, the length reaches 3 meters, the thinnest wall thickness can reach 1-1.6 mm, and the radius reaches 57.15 mm. The implementation content of the high-speed dynamic balance of the hollow thin-walled flexible shaft is as follows:
[0042] (1) First create a balance file on the balance machine, adjust the distance of the supporting pendulum according to the length of the shaft, and install the balance connecting flange, then install the shaft on the flange and wait for balance.
[0043] (2) Input the static balance parameters of the flexible shaft, including the balance speed of 1000r / min, the balance radius of 57.15 mm, the specified remaining unbalanced amount of 1000g.mm, and the measured remaining unbalanced amount of 750g.mm.
[0044] (3) Carry out the low-speed dynamic balance work of the shaft, and input the dynamic balance parameters, including the balance speed of 1000r / min, the balance radius of 57.15mm, and the specified single-s...
Embodiment 2
[0053] The material is glass fiber / epoxy resin, the length reaches 1.8 meters, the thinnest wall thickness can reach 2.2 mm, and the radius reaches 57.15 mm. The implementation content of the dynamic balance is as follows:
[0054] (1) First create a balance file on the balance machine, adjust the distance of the supporting pendulum according to the length of the shaft, and install the balance connecting flange, then install the shaft on the flange and wait for balance.
[0055] (2) Input the static balance parameters of the flexible shaft, including the balance speed of 1000r / min, the balance radius of 57.15 mm, the specified remaining unbalanced amount of 900g.mm, and the measured remaining unbalanced amount of 550g.mm.
[0056] (3) Carry out the low-speed dynamic balance work of the shaft, and input the dynamic balance parameters, including the balance speed of 800r / min, the balance radius of 57.15 mm, and the specified single-sided residual unbalance of 25g.mm, and the appl...
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Abstract
The present invention belongs to a technique for correlating the dynamic balance of the flexible rotor, and relates to a dynamic balance correcting method of the flexible rotor. The present invention adopts a ''pasting block at the center and end'' method of pasting balance block at the middle and two ends of the flexible rotor, and adopts the methods of selecting an appropriate rotary speed in a segment of rotation speed range before the interface rotary speed for static balancing, multiple cross section correcting, measuring speed with double frequency of the vibration velocity, monitoring with a radar chart, vectogram correcting and analyzing and laser monitoring for reducing the vibration, the vibration speed of the flexible rotor is effectively reduced and the optimum balance rotary speed can be founded out, the couple unbalance that the primary inertia rotor and rotor line cross at the gravity center is prevented to form in the balancing procedure, the part generating the unbalance amount is found out and the correction is executed pointedly.
Description
technical field [0001] The invention belongs to a dynamic balance correction process of a flexible rotor, and relates to a dynamic balance correction method of a flexible rotor. Background technique [0002] In the field of rotor dynamic balancing, currently the most common method is to use a dynamic balancing machine to balance rigid rotors. As for the dynamic balancing technology of flexible rotors, it is in a blank state, and there are no mature processes and technologies that can be used for reference. The dynamic balance of flexible rotors is different from that of rigid rotors. The balance method using rigid force transfer theory cannot eliminate the vibration of flexible rotors, nor can it achieve the purpose of balance. The flexible rotor will produce deflection mode and strong vibration when it rotates, and the balance at one speed will cause the destruction of the balance of the previous speed, so it is necessary to perform dynamic balancing in all working conditio...
Claims
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Application Information
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