陀螺电机转子动平衡激光精密去重技术  

Research of Laser De-weight Technology on Gyroscope Motor Rotor Dynamic Balance

作　　者：薛亚飞 李广[1] 高文焱 李凯[1] XUE Ya-fei;LI Guang;GAO Wen-yan;LI Kai(Beijing Institute of Aerospace Control Devices,Beijing 100039)

机构地区：[1]北京航天控制仪器研究所

出　　处：《导航与控制》2019年第5期49-53,120,共6页Navigation and Control

基　　金：“增材制造与激光制造”重点专项(编号:2016YFB1102503)

摘　　要：陀螺电机转子动平衡采用的人工打孔去重存在效率低、去重精度低、金属碎屑残留等问题,严重制约了陀螺的生产效率和精度。而激光去重具有去重精度高、无接触、效率高等优点,在精密去重领域应用前景广泛。采用脉冲光纤激光器对陀螺电机转子动平衡进行了激光精密去重技术研究,探讨了激光频率、振镜扫描速度等参数对去重效果的影响规律,优化了激光去重工艺参数。当激光功率为30W、振镜扫描速度为1000mm/s时,去重盲孔效果最好。针对激光去重盲孔存在残留物问题,提出了激光二次抛光去除残留物的方法,研究了激光功率、振镜扫描速度对残留物去除效果影响规律,优化了激光抛光工艺参数。激光去重盲孔经二次扫描抛光后,盲孔表面残留物去除干净,满足陀螺电机转子的精密去重要求。In the dynamic balance of gyroscope motor rotor,manual drilling is used to de-weight which has some problems,such as low efficiency,low precision and residual metal debris.It seriously restricts the production efficiency and accuracy of gyroscope.Laser de-weight has the advantages of high precision,non-contact and high efficiency,it has wide application prospects in the field of precision de-weight.The pulsed fiber laser is used to de-weight for gyroscope motor rotor,the influence of laser frequency and galvanometer scanning speed on the de-weight effect is studied.The technical parameters of laser de-weight are optimized.The laser de-weight will find its best effect with the laser power of 30 W and the galvanometer scanning speed of 1000 mm/s.In order to solve the problem of blind hole residues after laser de-weight,the method of laser secondary polishing is adopted to remove residues.The effect of residue removing determined by laser power and galvanometer scanning speed is studied,and the technical parameters of laser polishing are also optimized.After the secondary polishing process conducted for laser de-weight blind hole,no obvious residues is found on the blind hole.The preliminary research indicates that laser de-weight and polishing process can meet the requirements from gyroscope motor rotor de-weight.

关 键 词：陀螺电机转子 激光去重 激光能量 激光抛光 

分 类 号：TN249[电子电信—物理电子学]