In response to the common problems of high vibration,low continuous operation stability,and unstable wire drawing ring shape in high-speed wire rolling production,simulation optimization research was conducted on the wire drawing head,which is a key component of the wire drawing machine.Theoretical methods such as modal analysis dynamic control equation and dynamic balance calculation equation were used to establish geometric models,finite element models,kinematic models,etc,and critical speed analysis,modal analysis and dynamic balance simulation analysis were carried out to grasp the main reasons for high vibration of the wire drawing head.In order to eliminate the dynamic balance of the spinning head as much as possible during the design phase,finite element simulation software was used to perform modal analysis on the original spinning head.The obtained first critical speed of the original spinning head is 72.2 r/s,which is higher than the maximum speed of 40 r/s.Therefore,the spinning head can be dynamically balanced according to a rigid rotor.Then,a virtual prototype of the spinning head was established using dynamic simulation software,and double-sided dynamic balance simulation analysis was conducted to obtain the required correction mass of the spinning head on two calibration faces.The counterweight structure was designed according to the installation position.By optimizing the action balance of the spinning head,the dynamic unbalance mass of the spinning head on the two front faces decreased from 8.199 1 kg and 6.655 4 kg before optimization to 4.843 9×10-4 kg and 3.603 8×10-4 kg,and the first critical speed increased from 72.2 r/s to 72.75 r/s,meeting the design requirements.Finally,the optimized spinning head was installed on the hollow shaft of the spinning machine for on-site online dynamic balance testing experiments.The initial unbalance of the spinning head online dynamic balance was 27.4 g,with a phase of 232°.The horizontal vibration amplitudes of the two bearing position measurement points were 1.02 μm and 6.63 μm respectively.All are smaller than 10 μm,meeting design requirements.