Research on Dynamic Characteristics of Grinding Electric Spindle Rotor Based on ANSYS Workbench
Motorized spindle is a new technology that integrates motor and spindle,which has higher accuracy,speed,and power than traditional spindles.In order to develop a new spindle with higher-performance,it is necessary to use rotor dynamics methods to calculate the limiting speed of spindle during the design phase,which will improve its life and performance.At present,technicians widely use rotor dynamics equations based on rigid beam assumption to solve the dynamic characteristics of spindle.This method is unable to fully consider all the degrees of freedom of the model,resulting in insufficient estimating of the spindle performance.In response to this,this paper proposes a method that combines simulation software with bearing theory to build a grid model of the spindle in ANSYS Workbench software.The stiffness,limiting speed,and modal frequency of the spindle are analyzed,and compared with experimental results.The results indicate that the error between simulation results and experiment results is small,which has demonstrated the effectiveness and practicality of this method.
motorized spindlelimiting speedstiffnessnatural frequencyfinite element model
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