Research And Design Of The De-weighting Controlling System Of The Automatic Dynamic Balancing Machine

Nowadays, Dynamic balancing technology has been well established, but the function of the traditional balancing machines is limited to rotors'unbalancing test. In many cases, the rotors'balance adjustment is still done by hand, so the productivity is relatively low.In order to meet modern business requirements of efficient production, Dynamic balancing equipments with the function of both testing and automatic correction are bound to become an inevitable trend and mainstream technology.This paper firstly elaborated the basic theory of dynamic balancing technology, then a set of automatic unbalance de-weighting system is researched and developed on the basis of the original single-sided vertical dynamic balancing testing machine,First the mathematical model of the rotor's vibration is established, from which the rotor's unbalancing phase and quality are mathematically expressed. Then general methods of measuring the information about rotor's vibration have been described. How to realize rotor's automatic balancing correction is the focus of this paper.Therefore, in this paper we researched the rotor correction strategy, allowing for the actual shape of the rotor and convenience of the correction process as well as ease of operation, this system uses the correction method of drill holes on the end of the rotor.Then the relationship between feed volume and unbalance quality is analyzed, on the basis of which the de-weighting mathematical model is established. Besides, the possible amending error is theoretically analyzed.For the research of the controlling system, the skeleton of the mechanical configuration and the controlling formula are firstly introduced. Servo system is a key technology to the realization of automatic de-weighting and to ensure the correcting precision. So, the key technology of servo system is also researched in this paper, including spindle servo and feeding servo system. For the spindle servo system, the focus is on the research of the speed adjusting principle and the method of position controlling. For the feeding servo system, the principle of pulse comparison is firstly introduced, then some key circuits are designed and analyzed. Besides, the electronic gear used in the AC servo system is also researched. For the software, the de-weighting procedure is designed.Finally, in order to guarantee the stability and reliability of the whole equipment, the EMC(Electromagnetic Compatibility) of the system is analyzed and designed.The automatic dynamic balancing equipment is a mechatronic product with great difficulties and various sophisticated technologies which include mechanical technology, electrical and electronic technology, sensor and measuring technology, information processing and automatic controlling principle etc. The automatic de-weighting controlling system researched and developed in this paper can substantially improve the productivity and precision of the unbalance amending of the rotors, which plays an important role in saving labor and improve the efficiency of the producing process.