Research On Multi-axis Synchronous Control Based On Topology Modification Of Internal Gear Power Honing

With the rapid development of the manufacturing industry,the requirements for the processing quality,precision and processing efficiency of the gears are gradually increasing.As one of hardened tooth surface gear finishing methods,internal gearing power honing can not only finishing cut the tooth surface of the workpiece gear,but also has strong tooth surface error correction ability and anti-fatigue ability.Thereby enhancing the use effect of the gear and extending its life.However,even in this case,the gear will still be affected by the installation error and the deformation of the drive shaft and gear teeth during the actual transmission process,which is not conducive to improving the gear bearing capacity and reducing noise.Therefore,it is necessary to carry out the research on the tooth modification.At the same time,high-speed and high-precision machining of gears is accomplished by multi-axis control,whoes accuracy plays a key role in the machining accuracy and efficiency of the gears,which directly determines the accuracy of honed and modificated gear.Therefore,based on the research content of the internal gearing power honing of the CIMS Institute of HFUT,this paper summarized and analyzed the processing mechanism and processes,and then based on this,researched the dressing methods,and the structural and control algorithms under multi-axis synchronous control of the CNC internal gearing power honing.The main researches can be obtained as follows:1.Based on the theory of space cross axis gear transmission and meshing principle,the basic machining mechanism of the internal gearing power honing is analyzed.And further analyze and summarize the internal gearing power honing from three aspects: the hoing process,the meshing characteristics,and the internal tooth honing wheel dressing process during the processing of the internal gearing power honing.2.On the basis of the machining mechanism of the internal gearing power honing,the mathematical model of the CNC internal gearing power honing is established.In order to realize the modification during the honing process,the motion of the motion axis in the honing process is modified in the form of high-order polynomials.Then the particle swarm optimization algorithm is used to solve the coefficients of the high-order polynomial with the given amount of modification.Simulate and analyze it at last.3.Because of the limitations of the traditional positional bias controller,this paper proposes a position compensator based on fuzzy neural network,which is used to realize the synchronous real-time compensation deviation of the synchronous control.Thereby improving the synchronization control precision between multiple axes.4.Taking the Y4830 CNC internal gearing power honing machine as the research object,the expression and source of the synchronization error in the honing process are analyzed.Then combined with the linkage of each motion axis during honing and dressing,a multi-axis control model combining master-slave control mode and parallel control mode is constructed.Using the deviation coupling compensator proposed above to compensate the position between the parallel axes to achieve the precision of the honing and dressing process.Finally,it is analyzed and verified by simulation and experiment.