Research On The Optimization Design Of Ultra-high Speed And Low Energy Consumption Spindles And The Mechanism Of Vibration And Noise Reduction

As a symbol of the textile industry,the cotton spindle component is a key component of an ultra-high-speed,variable-mass,light-duty,vertical-rotating complex rotor that is twisted and wound on a spinning machine in the textile industry.Spindles are the goal.By exploring the relationship between the complex structure of cotton spinning spindles and their corresponding properties,the spindle structure characteristics,new spindle structure design,key component performance analysis,new spindle critical speed analysis,and parametric modeling system development are explored.The research contents are:(1)By analyzing the special relationship and internal connection between the key structure of the spindle and its performance,this relationship is fed back to the design of the new type of spindle.A flat spindle bottom high-speed energy-saving type,dual-vibration system high-speed energy-saving type,dual vibration-absorbing high-speed energy-saving and fuel-saving are proposed Three types of high-performance structure design cotton spinning spindles can theoretically make the spindles run more stably and reliably at ultra-high speeds.(2)Based on the performance relationship formula of the new spindle's key components of the double-vibration system,the damping elastic tube and the vibration-absorbing coil spring,based on Matlab analysis software was used to explore the influence of the key structural parameters of the elastic tube on the elastic damping performance,and the oil film damping and oil temperature The relationship between the elastic properties of the vibration-absorbing coil springs and the multi-objective optimization software isight is used to carry out multi-objective optimization design on the bending stiffness and the bottom vibration performance of the elastic tube to determine the optimization scheme of the key structural parameters of the elastic tube.(3)Based on the calculation theory of the critical speed of the rotor modal synthesis method,combined with Ansys simulation software,the modal and mode shape analysis of the new dual-vibration system spindle rod-disk assembly is performed,and the Campbell diagram is obtained.The critical speed values of each step of the rotor are analyzed.The modal test and analysis of the flat-bottomed spindle was performed to obtain the natural frequency value of the spindle.The comparative study showed that the new dual-vibration system high-speed energy-saving spindle can effectively reduce the second-order critical speed and is more suitable for stable operation at ultra-high speed.Considering that the elastic tube cooperates closely with the rotating body of the rod and disc,the resonance frequency of the elastic tube is analyzed.(4)Using Visual Basic 6.0 as the programming development tool and the Solid Works three-dimensional modeling software as a secondary development platform,a new dual vibration system high-speed energy-saving cotton spinning spindle parametric modeling system was developed,and a separate application program was developed.The spindle structure design provides a good design work platform.