Research On Structural Analysis And Error Compensation Technology Of YK3150E CNC Hobbing Machine

With the rapid development of modern manufacturing industry,gear as a basic component is widely used in manufacturing industry.Its manufacturing accuracy will have a great impact on the performance of mechanical products.Most of the gear production is completed by hobbing machine tools.Therefore,how to improve the processing accuracy of hobbing machine tools has become the current situation.Task problems that need to be solved urgently.At present,the main way to improve the processing accuracy of hobbing machine tools is to use error compensation technology,which is economical,efficient and easy to batch processing.In this paper,YK3150 E CNC hobbing machine tool is taken as the research object,the structure of the machine tool is analyzed,and on this basis,the problem of geometric error compensation caused by machine tool working is studied and explored.By analyzing the structure of YK3150 E NC hobbing machine tool,the function of machine tool bed,pillar,workpiece spindle and their internal relations are clarified.The key parts of machine tool are loaded in ABAQUS finite element software,the real working environment is simulated,and the main damaged parts in actual work are analyzed.It is necessary to verify the existence of errors in the actual work of machine tools from the structural point of view.Based on the multi-body system theory research method and D-H homogeneous coordinate transformation method,the error geometry model of YK3150 E NC hobbing machine tool is built.According to the structure analysis of the machine tool before,the machine tool’s topological structure diagram is obtained.The topological structure is calculated by the low-order body array arithmetic.The motion relationship between the adjacent bodies of the machine tool is analyzed and analyzed.The error characteristic matrix of the adjacent bodies is obtained.The error characteristic matrix is calculated according to the machine tool’s topological structure,and the error characteristic matrix is obtained.Error geometry model of model NC hobbing machine tool.In order to realize the error compensation of machine tools,it is necessary to study the geometric error measurement and identification of machine tools.In this paper,16 error elements existing in the two rotating axes of YK3150 E NC hobbing machine tools are separated and identified by using the spherical rod instrument;on the basis of the research of nine-line measurement,twelve-line measurement and fourteen-line measurement,laser drying is adopted.With regard to the instrument,12 error elements in the moving pair of machine tools are separated and identified by six-line measurement and identification method,and the specific error data are obtained through experiments.The error parameter broken-line diagram is drawn by Origin software.Aiming at the characteristics of YK3150 E NC hobbing machine tool and the work of geometric modeling of pre-error and identification of error parameters,etc.,a new method is proposed.The geometric error compensation strategy of the machine tool is designed to prepare for the real-time geometric error compensation of the machine tool.