摘要
超声波钻探器因具有质量轻、低功耗、所需轴向力小、便于实时检测和原位分析及对象适应性强等特点,在地外天体科学钻探的新技术和新方法探索过程中备受瞩目。为进一步提高钻探器对不同钻进对象的适应性及其设计效率,通过研究超声波钻探器结构参数可知,其输出频率主要受碰撞冲击次数、弹簧钻杆的振动及钻杆本身的动力学特性等因素耦合影响。在此基础上,建立钻探器影响因素的物理模型,并结合实验研究了恢复弹簧刚度及初始预紧力和质量块质量对输出频率、位移和速度等参数的影响,得到弹簧初始预紧力对频率影响较为显著,弹簧刚度及质量块质量次之,为适应不同硬度对象高效钻进的变频超声波钻探器的优化设计提供技术参考。
The ultrasonic drill has the characteristics of lightweight,low power consumption,the small axial force required,easy real-time detection and in-situ analysis,and good adaptability to different objects.It is highly anticipated in exploring new scientific drilling technologies and new methods suitable for deep space exploration.In order to improve the adaptability of the drill to different drilling objects and its design efficiency further,the influence of the structural parameters of the ultrasonic driller is studied.The frequency is mainly considered to be affected by the number of collisions,the vibration of the spring and drilling rod,and the vibration of the drilling rod itself.On this basis,a physical model of the influencing factors was established.Experiments are used to examine how the spring stiffness,initial preload,and mass of the free masses affect the output frequency,displacement,and speed.The effect that the initial preloads of the spring have on the frequency is more significant,followed by spring stiffness and mass of the free masses.Finally,a technical reference for the optimization design of variable frequency ultrasonic drills suitable for high-efficiency drilling of objects with different hardness is provided.
作者
张兴旺
张明
于登云
曾婷
殷参
杨帅
庞勇
ZHANG Xingwang;ZHANG Ming;YU Dengyun;ZENG Ting;YIN Shen;YANG Shuai;PANG Yong(Beijing Spacecrafts,Beijing 100194,China;China Academy of Space Technology,Beijing 100194,China;China Aerospace Science and Technology Corporation,Beijing 100048,China)
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2023年第7期1735-1742,共8页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金(U1637208,U2013603)。
关键词
超声波钻探器
结构
高速摄像系统
冲击碰撞
频率
ultrasonic drill
structure
high-speed camera system
impact collision
frequency
