A Fastener Drilling Auxiliary Equipment Guaranteeing Concentric Precision

Abstract

The invention relates to the technical field of drilling auxiliary equipment, and discloses a fastener drilling auxiliary equipment that ensures concentric precision, including an inner cylinder, an outer cylinder is fixedly sleeved on the outer side of the inner cylinder, and the cylinder of the inner cylinder Claws are movably inserted on the wall, elastic plates are fixedly connected to the outer side of the inner cylinder, positioning blocks are movably inserted on the wall of the outer cylinder, and a swivel is inserted in the inner rotation of the outer cylinder, and the outer cylinder The outer side of the cylinder and the outer side of the swivel ring are threadedly sleeved with a sleeve. Set two sets of jaws to hold the drill pipe, so that the drill pipe is always on the axis of the inner cylinder, and the jaws will have a slight displacement when being pushed by the drill pipe, avoiding a large eccentricity of the drill pipe , to control the drilling accuracy, the expansion and contraction of the positioning block can be adjusted by rotating the casing, and then the maximum eccentricity of the drill pipe can be adjusted. It can adapt to various sizes of drill pipes and drilling work with different precision requirements, and has a wide range of applications.

Description

technical field [0001] The invention relates to the technical field of drilling auxiliary equipment, in particular to an auxiliary drilling equipment for fasteners that ensures concentric precision. Background technique [0002] There are about several million fasteners on the aircraft, which ensures the stability and connection of the aircraft. The processing of the fastener holes on the aircraft is generally drilling, which is suitable for the through holes for mounting screws and some rivet mounting holes, and some holes It is a counterbore and a stepped hole. Since the counterbore and the stepped hole need to use drills of different sizes during processing, after the drill is replaced, it must be repositioned to align the drill with the original axis. Some aircraft fasteners The high-strength bolts are installed with a tight fit, and reaming is required after drilling, and the concentric positioning accuracy of the reamer and the drilling is required to be very high. ...

AI Technical Summary

Problems solved by technology

[0003] During the drilling process, due to the influence of factors such as deep drilling, long drill pipe and reamer anchor rod, the drill bit and reamer are prone to shaking, which affects the machining accuracy of the hole. In addition, there are a large number of fasteners, and there are The possibility of insufficient drilling accuracy is high, and the accumulation of small amounts will have an adverse effect on the stability of the overall structure of the aircraft. The current drilling work has basically realized mechanical automation operations. For special holes on some irregular workpieces The position is still manual drilling, but the drilling machine only strengthens the stability of the drill pipe and the installation of the machine, and does not solve the eccentricity problem of the long drill pipe during high-speed rotation. Manual drilling has high technical requirements for workers, and there is no good concentric positioning auxiliary equipment, and the problem of drilling eccentricity will also occur, resulting in a decrease in drilling accuracy

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