Electromagnetic Slip Ring Type Balancing Head Single Plane Dynamic Balance Adjustment Method Research

In this thesis,the spindle of SYL04H-1 horizontal lathe is taken as the test object,and the electromagnetic sliding ring balancing head is taken as the research object,the adjustment method of single-plane dynamic balance of electromagnetic sliding ring balancing head is developed,focusing on the structural design of electromagnetic sliding ring balancing head,the working principle of electromagnetic sliding ring balancing head and the basic theory of unbalance.Combined with Labview platform,a dynamic balance adjustment system based on this method is developed.The main contents of this paper are as follows:(1)The development status of dynamic balancing technology at home and abroad were summaried and introduced,including the classification of dynamic balancing devices,advantages and disadvantages of dynamic balancing methods,and the gap between domestic and foreign technologies.So far,this thesis summarizes the basis of topic selection,the source of the topic,and the framework of the thesis.(2)The theory of electromagnetic slip-ring balancing head and dynamic unbalancing was analyzed deeply,including the test object and the cause of balance.The structure of electromagnetic balancing head,the principle of electromagnetic driving and the adjustment of electromagnetic balancing head were introduced.The imbalance theory included the expression of imbalance,the criterion of dynamic balancing,quasi-unbalanced classification,unbalanced vibration response analysis,bearing stiffnness calculation,influence coefficient method,etc.Then,the requirements and technical specifications of the dynamic balancing system were described.(3)A method of dynamic balance adjustment method was designed and developed based on electromagnetic sliding ring balancing head.This proposed method mainly included the overall idea of dynamic balance adjustment algorithm,adjustment principle,dynamic balance realization,dynamic balance adjustment simulation and limitation,and provided theoretical basis for online dynamic balance system software design.The proposed method also counted in the negative centrifugal force produced by moving the mass block.Therefore a new on-line dynamic balance method was proposed,and the method was programmed by Labview.(4)A new type of dynamic balancing system based on electromagnetic slip ring balance head was designed and developed by using virtual instrument Labview.Based on LabVIEW software,the modular programming of this method was designed,including user login module,data acquisition and processing module,adjustment module and data storage module.The software technologies for realizing online dynamic balancing system included system startup interface,signal acquisition and processing,equipment interface and setting,parameter setting,negative centrifugal force acquisition,correction simulation.determination of optimal position,main interface design and data storage.(5)The spindle of SYL04H-1 horizontal lathe was taken as the test object,this paper carried out relevant experimental research.The validity of the dynamic balance adjustment simulation system of the new electromagnetic sliding ring balancing head was verified.The influence law of test weight,angle and speed on the influence coefficient was explored,the magnitude and.phase of unbalance were determined,and the dynamic balance adjustment test and analysis of the main axle of the station truck were carried out.Compared with the traditional single-plane dynamic balance method,the new single-plane dynamic balance adjustment method could accurately locate the correction position of the spindle mass block,greatly improve the spindle rotation accuracy,and provide basic scientific basis for the smooth operation of high-speed spindle and process optimization.