喷液式一体化在线动平衡终端的设计与实验研究

In order to solve the problems of traditional assembled terminals in spray type dynamic balancing systems, a new type of integrated terminal using 3D printing was proposed. Based on the analysis of the problems of over mass and sealing in traditional assembled balance terminals, the new type of integrated balanced terminal was designed based on the technical characteristics of spray-type on-line dynamic balance and the requirements of rapid prototyping.On the basis of analyzing the balance ability of the integrated balance terminal, an analysis model of the curved cavity surface was established according to the limit experimental state.The thickness of the cavity wall was selected to complete the production of the integrated terminal and the key parameters were compared with those of the assembled terminals. In addition, in order to ensure the liquid flow characteristics and surface testing requirements, the integrated balanced terminal surface and the liquid flow path were modified.Finally, an on-line verification experiment of balanced terminals was performed on a high-speed spindle test stand. The experimental results show: when the speeds are 9 000 r/min, 12 000 r/min and 15 000 r/min, the amplitude at the rotation frequency can be reduced by 80.76%, 82.34% and 84.13% respectively through on-line balancing, and the balance time is very short. This illustrates the reliability of the proposed balanced terminal.