Precise hole leading method for machining training plane skin

Abstract

The invention discloses a precise hole leading method for machining a training plane skin. The method comprises the following steps that firstly, according to a structural form of the position where hole leading is needed, a proper and reliable airplane training plane structure frame plate piece or part is selected as a mounting point, a hole leading drill jig is designed and manufactured, the mounting position of the hole leading drill jig is adjustable, and the hole leading drill jig is coordinated and consistent with the position of a hole needing to be led out; an aircraft skin is assembled on an aircraft structure frame plate, and before installation, the hole leading drill jig is installed on an aircraft structure lug hole in an aircraft structure lug, so that the position of an aircraft structure lug drilling jig hole is consistent with that of a bolt hole needing to be led out; after the aircraft skin is backfit and assembled, it is guaranteed that the positions of the hole leading drill jig are consistent before and after the aircraft skin is installed; the hole in the aircraft skin and the bolt hole in the structural frame plate of the aircraft structure frame plate are coordinated and consistent in position. According to the precise hole leading method for machining the training plane skin, the hole forming precision can be greatly improved, the labor intensity is reduced, the expansibility is high, and the method can be popularized and used and applied to hole forming in narrow spaces of other parts.

Description

technical field [0001] The invention relates to the technical field of hole making and hole introduction in narrow parts of aircraft structures, and in particular to a method for precise hole introduction in the skin processing of a trainer aircraft. Background technique [0002] There are 5 bolt holes in the narrow position on the frame plate of the aircraft trainer to connect the frame plate and the outer skin of the fuselage. Due to the narrow position of the bolt holes, it is impossible to use the hole making tool to make holes from the frame plate to the skin ; On the other hand, because the installation position of the outer large skin is determined by repairing, the consistency is poor, and the bolt hole positions on the skin cannot be accurately determined. For the hole, first draw the bolt hole position on the outer skin, and then make holes from the skin to the frame plate. Due to the deviation of the reference, the marking accuracy is poor, and a large number of o...

AI Technical Summary

Problems solved by technology

[0002] There are 5 bolt holes in the narrow position on the frame plate of the aircraft trainer to connect the frame plate and the outer skin of the fuselage. Due to the narrow position of the bolt holes, it is impossible to use the hole making tool to make holes from the frame plate to the skin ; On the other hand, because the installation position of the outer large skin is determined by repairing, the consistency is poor, and the bolt hole positions on the skin cannot be accurately determined. Holes, first draw the bolt hole positions on the outer skin, and then make holes from the skin to the frame plate. Due to the deviation of the reference, the marking accuracy is poor, and a large number of out-of-tolerance and scrap are caused after the holes are made.

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