Finishing device and finishing method for aircraft ear-type door hinge hole

Abstract

The invention discloses a fine machining device of an airplane inserting lug type door hinge hole. The fine machining device comprises a supporting tool, a hinge joint locating tool and a cutter, wherein the hinge joint locating tool is provided with a support, an upper hinge joint locating mechanism and a lower hinge joint locating mechanism, the upper hinge joint locating mechanism comprises a drill plate I, a drill plate II, a control block I and a locating pin I, the drill plate I and the drill plate II are fixedly connected to the support, and the control block I is positioned between the drill plate I and the drill plate II and is movably connected with the support; the lower hinge joint locating mechanism comprises a drill plate III, a drill plate IV, a control block II and a locating pin II, the drill plate III and the drill plate IV are fixedly connected to the support, and the control block II is positioned between the drill plate III and the drill plate IV and is movably connected with the support; the cutter is of an integrated structure and is sequentially provided with a front guiding rod, a first cutting edge, a second cutting edge and a rear guiding rod from top to bottom. The invention also discloses a fine machining method by utilizing the fine machining device of the airplane inserting lug type door hinge hole. According to the fine machining method disclosed by the invention, the coaxial degree of the airplane inserting lug type door hinge hole is ensured, and the machining efficiency and the machining quality of the airplane inserting lug type door hinge hole are increased.

Description

technical field [0001] The device and method for finishing the hinge hole of an aircraft ear-in type door of the present invention are mainly used for the finishing of the hinge joint hole of the aircraft ear-in type door. Background technique [0002] At present, plug-in door hinge joints are widely used in the aerospace industry. Since the hinge joint is the key point of the connection between the hatch and the fuselage, and bears the weight of the entire hatch, the hinge joint is generally made of high-strength steel, stainless steel, titanium alloy and other materials. Taking 15-5PH stainless steel as an example, its hardness is relatively high, and it is more difficult for cutting. It is mainly reflected in the large cutting force, high cutting temperature, easy sticking of the knife, poor chip breaking, and hole formation during hole making. Thermal expansion will cause problems such as low hole-making efficiency, severe abrasive wear of the tool, and inability to gua...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of low quality and inability to achieve coaxiality of the hinge holes of the aircraft ear-type doors, the present invention provides a finishing device and method for the hinge holes of the aircraft ear-type doors. High hole-making efficiency, ensuring the quality of hinged holes and the requirements for coaxiality

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