便携式螺旋轨迹制孔装置的研制

Development of Portable Spiral Trajectory Drilling Device

飞机装配存在一些特殊的制孔区域,如翼根、垂尾等部位,这些制孔区域或空间狭窄或有一定高度,通常的自动制孔设备和机器人制孔系统难以发挥自身的优势。对此,研制了一种便携式全电动螺旋轨迹制孔装置,该装置具有结构紧凑、方便携带且可依据程序设定的工艺参数对应叠层材料,可自动改变刀具转速、进给速率等特征,能对航空材料实施螺旋铣孔加工。利用所研制的螺旋轨迹制孔装置对7075–T7351铝合金叠层材料进行制孔验证,制孔精度等均达到了预期,验证了该新型制孔装置及控制方法的合理性。

It is widely acknowledged that some special drilling areas exist in aircraft assembly.For example,the wing root and the vertical tail.Not only are they narrow in space but also require certain height,which makes it difficult to fully harness the advantages,especially in the usual automatic drilling device and robot drilling system.Hence,a portable helical trajectory drilling device was designed in order to solve the problems.This device is compact,portable and could set process parameters according to the program,besides,it may be applied in drilling of aeronautical materials.Moreover,tool feed speed can be changed automatically for multilayer material.In this paper,the authors applied the developed spiral trajectory drilling device to examine the drilling of 7075–T7351 multilayer Al alloy material.It is showed that the accuracy of this device reached the expectation and the rationality of the design and control methods of the new type drilling device was verified.