Dresser for deep hole internal thread

Abstract

The invention provides a dresser for a deep hole internal thread and belongs to the technical field of hand tools. The dresser comprises a locating mandrel, a ferrule, a threaded cutter, a fixing seat, a fixing sleeve and a baffle, wherein the locating mandrel penetrates into an inner cavity of the fixing seat, and a tapered surface is arranged at the lower end of the locating mandrel; the ferrule is embedded into the inner cavity of the fixing seat; the threaded cutter comprises four groups of L-shaped blades, a cutting edge with a thread form consistent with that of the deep hole internal thread of a to-be-dressed aircraft part is arranged at the outer side end of the horizontal arm of each blade, a wedge-shaped arc surface is arranged on the vertical arm of the blade, the four groups of blades are evenly arranged around the locating mandrel, and the horizontal arms of the four groups of blades are assembled with the fixing seat; an operating handle is arranged at the upper end of the fixing seat, the fixing seat and the fixing sleeve are assembled in a threaded fit manner, the thread pitches of the fixing sleeve, the fixing seat and the deep hole internal thread of the to-be-dressed aircraft part are identical, and the fixing sleeve and the to-be-dressed aircraft part are assembled in a threaded fit manner. The dresser solves the problem about repair of the deep hole internal thread of the aircraft part and guarantees smooth assembly of threaded fit members in the maintenance process of the aircraft.

Description

technical field [0001] The invention relates to a trimmer for internal threads in deep holes, belonging to the technical field of hand tools. Background technique [0002] There are many thread fitting components on the aircraft. In order to prevent the relative rotation of these thread fitting components after assembly, many punch points will be marked at the seam where the internal and external threads intersect the mouth end, which causes the local thread profile deformation of the port, and the aircraft When repairing again, due to the local deformation of the threaded component at the threaded port, it cannot be assembled smoothly again, so the internal and external threads of the component need to be trimmed. [0003] At present, for the thread trimming of aircraft thread mating components, the method of scraping the internal and external thread profiles by forming tools is generally used, but this trimming method is not only easy to damage the thread profile, the qual...

AI Technical Summary

Problems solved by technology

[0003] At present, for the thread trimming of aircraft thread mating components, the method of scraping the internal and external thread profiles by forming tools is generally used, but this trimming method is not only easy to damage the thread profile, the quality is unstable, and the trimming efficiency is very low, especially For such as attached figure 1 In the shown aircraft part 1, when the deep hole internal thread 1-1 of the aircraft part 1 is trimmed, the method of scraping and repairing the thread profile with a forming tool cannot be completely repaired, so it is urgent to design a special deep hole internal thread 1-1. Hole internal thread trimmer to ensure the smooth assembly of thread mating components after repair of aircraft parts

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