History and classification of the hottest dynamic

2022-08-12
  • Detail

The history and classification of dynamic balancing machines

the development of balancing machines has a history of more than 100 years. In 1866, Siemens invented the generator. Four years later, Henry Martinson, a Canadian, applied for a patent for balance technology, which opened the prelude to the balance correction industry. In 1907, Dr. Franz lawaczek provided the improved balancing technology to Mr. Carl Schenck, who made the first double-sided balancing machine in 1915. Until the late 1940s, the color after tempering was different, and all balancing processes were carried out on pure mechanical balancing equipment. The balance speed of the rotor usually takes the resonant speed of the vibration system to maximize the amplitude. In this way, the measurement error of rotor balance is large and unsafe

with the development of electronic technology and the popularization of rigid rotor balance theory, most balance equipment adopted electronic measurement technology after the 1950s. The balancing machine with plane separation circuit technology effectively eliminates the interaction between the left and right sides of the balancing workpiece. Until the 1970s, the emergence of hard support balancing machine can be regarded as a leap in the history of balancing machine development. It adopts the static balance size setting, which eliminates the inconvenience of frequent dynamic adjustment of the traditional soft support balancing machine, and forms a permanently calibrated balancing machine. In the 1980s, piezoelectric sensor technology brought a revolution to the development of balancing machine. The balancing machine using this technology basically replaces the soft support balancing machine in the balancing field that does not need very high speed

at present, with the application of microcomputer technology, the balancing machine has been brought into a new era, and its performance, accuracy and operability have been significantly improved. Balancing machine has integrated optical, electrical and mechanical technologies. And it is more and more widely used in the fields of electric tools, machinery manufacturing, fans, motors, papermaking, textiles, household appliances, metallurgy and so on

an unbalanced rotor of 0.30 ~ 0.35 generates a pressure on its supporting structure and the rotor itself during its rotation, which leads to vibration. Therefore, the dynamic balance of the rotor is very necessary. Balancing machine is to check the dynamic balance of the rotor in the rotating state. The function of dynamic balance is:

● improve the quality of the rotor and its products

● reduce noise

● reduce vibration

● improve the trial life of supporting parts (bearings)

● reduce the discomfort of users

● reduce the power consumption of products

balancing machine can be divided into hard support balancing machine, soft support balancing machine Semi hard support balancing machine

the hard support balancing machine is a balancing machine whose balancing speed is far lower than the resonance frequency of the vibration system. During balance verification, the support swing frame is relatively in a "hard" state, so the rotor can be balanced and corrected under conditions close to the actual bearing. It has the characteristics of simple operation and good safety performance

soft support balancing machine is a balancing machine whose balancing speed is greater than the resonance frequency of the vibration system. During balance verification, the support swing frame is relatively in a "soft" state, so when the rotor is checked for balance. The supporting conditions are different from the actual bearing working conditions. It has the characteristics of high measurement accuracy

the semi-rigid support balancing machine is a balancing machine whose balancing speed is between 0.3 ~ 0.5 times the resonance frequency of the vibration system. At the same time, it has the characteristics of high support stiffness of the support balancing machine with the annual sales of hard molds accounting for more than 70% of the total sales of molds in the country, and has the advantages of high precision of the soft support balancing machine. Balance speed regulation range: 0.01 (5) 00mm/min machine can be divided into vertical balancing machine and horizontal balancing machine in terms of application; Special balancing machine and General balancing machine (including universal joint drive balancing machine). Horizontal balancing machine is a balancing machine in which the rotating shaft of the balanced rotor is horizontal on the balancing machine. It is applicable to rotors with rotating shafts or process shafts that can be assembled, such as machine tool spindles, rollers, fans, superchargers, motor rotors, steam turbines, etc

vertical balancing machine is a balancing machine in which the rotating shaft of the balanced rotor is vertical on the balancing machine. It is suitable for disc-shaped workpieces without rotor shaft, such as clutch, gear, fan, pressure plate and its assembly, brake disc, fan blade, water pump impeller, automobile flywheel, brake hub, belt pulley, grinding wheel and other disc parts

General balancing machine refers to a balancing machine that can dynamically balance rotors with regular shape and support form. The General balancing machine is simple to operate and has high efficiency

the special balancing machine is a balancing machine that can balance rotors with different support forms and appearance from general rotors, such as the balancing machine specially designed for the crankshaft of the engine and the transmission shaft of the automobile, with specific functions. (end)

Copyright © 2011 JIN SHI