飞机叠层结构埋孔对接定位系统的设计与试验研究

摘要

To realize high efficiency and precision of assembly making holes in modem aircraft stacks,a positioning system for docking buried hole was designed.The principle of magnetic field orientation and the technology of pneumatic transmission were used for detail design of the mechanical,electrical and control modules in the position system according to the non-magnetic characteristics of lamincaed structural materials.Then,the experiment was carried out for docking buried holes in the specimen composed of epoxy resin and PVC.Some φ8mm cylindrical permanent magnets were put into selected buried holes.Hall sensor was adjusted to meet distance of 5 mm from the laminated specimen surface and moved along with Z type path to detect cylindrical permanent magnet.The maximum measuring error is 0.35 mm at once time.Next,the cylindrical permanent magnet was rotated 180 degrees,and the detection was made again.The maximum average measuring error of the two detection modes is 0.13 mm.Research results show the system in the paper can satisfy the positioning requirement of assembly making holes in aircraft stacks.%为实现现代飞机叠层结构的高效精密制孔,设计了一种埋孔对接定位系统.结合叠层结构材料的非磁性特点,运用磁场定位原理和气压传动技术,对埋孔对接定位系统的机械、电气、控制等部分进行具体设计,并对环氧树脂与PVC组成的叠层试件进行了埋孔对接定位试验.在试件中选定的一组埋孔,置入相应的φ8mm圆柱永磁体;调整霍尔传感器距离试件外侧表面5mm,并使其沿Z型路径进行扫描永磁体.一次扫描后检测孔距的最大误差为0.35mm;将所有圆柱永磁体均旋转过180°后再扫描,两次检测孔距的最大均值误差为0.13mm.研究结果表明,所设计的系统能够满足飞机叠层制孔的定位要求.