摘要
针对三自激光、光纤惯组现采用内外框架、旋转锁定机构形式,结构复杂,轴系装配同轴性要求高的现状,以三自惯组为研究对象,从零件加工、零件装配、检验方法等三方面入手,分析内外框架、旋转锁定机构等惯组主要轴系的装配过程,总结了三自捷联惯组同轴度的主要影响因素;设计了全套内外框架、旋转锁定机构装配工装,形成了一套内外框架、旋转锁定机构等惯组主要轴系同轴性保证方法;通过分析内外框架、旋转锁定机构装配特性,形成一个直接或者间接的轴系装配同轴性评价、计量方法;使用三维图示化的新模式落实于文件中,提高工艺文件的可操作性;通过ANSYS有限元与现场实施验证了方法的可靠性与实用性。提高内外框架转位与旋转锁定机构定位精准度、稳定性、可靠性,保证惯组产品质量。
In view of the present situation of three-self laser and fiber inertial group,which adopts inner and outer frame,rotary locking mechanism,complex structure and high requirement for coaxial assembly of shafting,the three-self inertial group is taken as the research object,the assembly process of main shafting of inertial units,such as internal and external frames,rotary locking mechanism,is analyzed from three aspects of parts processing,parts assembly and inspection methods.The main factors affecting the coaxiality of three-self strapdown inertial navigation system(Sins)are summarized,and a complete set of assembly tools with internal and external frames and rotary locking mechanism are designed,a set of methods for ensuring the coaxial characteristics of the main shafting of inertial units,such as the inner and outer frames and the rotary locking mechanism,are formed,forming a direct or indirect method to evaluate and measure the coaxiality of shafting assembly,implementing a new model using 3D graphic representation in documents to improve the operability of process documents.The reliability and practicability of the method are verified by ANSYS finite element analysis and field application.The positioning accuracy,stability and reliability of the internal and external frame rotation and rotation locking mechanism are improved to ensure the product quality of inertial group.
作者
李嘉伟
朱宏义
李强
肖锋娟
蒋玉姣
胡权龙
Li Jiawei;Zhu Hongyi;Li Qiang;Xiao Fengjuan;Jiang Yujiao;Hu Quanlong(Xi'an Aerospace Precision Electromechanical Institute,Xi'an 710100)
出处
《航天制造技术》
2023年第2期67-73,共7页
Aerospace Manufacturing Technology
关键词
三自惯组
轴系同轴性
装配保证方法
三维图示化
three-self inertial group
shafting coaxial
assembly guarantee method
three-dimensional graphic representation
