Flaring locking tool for self-locking swivel nut and flaring connector used by same

Abstract

The invention relates to a flaring locking tool for a self-locking swivel nut and a flaring connector used by the same. The flaring locking tool for the self-locking swivel nut comprises the flaring connector, a flaring nail core and a power device driving the flaring nail core to move left and right. The flaring end comprises at least two expanding petals arranged at intervals in the peripheral direction. When the flaring nail core moves from left to right, the flaring nail core abuts against a stress part which is arranged on the expanding petals and matched with the flaring nail core in an abutting-against mode to enable the expanding petals to be expanded and deformed in the radial direction, the expanding petals abut against and extrude a flaring inner hole of the self-locking swivel nut to enable the flaring inner hole to be expanded so that external knurl parts of the self-locking swivel nut can be expanded and embedded into a base body of an engine crankcase, the self-locking fixing effect of the self-locking swivel nut can be achieved, and by using the automatic and mechanical flaring locking tool, the problems that in the prior art, because manual locking is adopted or other unmatched tools are used for locking, batch installing can not be carried out, and the working efficiency is low.

Description

technical field [0001] The invention relates to a flared locking frock for a self-locking screw sleeve and a flaring joint used in the frock. Background technique [0002] Due to the particularity of the connection of aerospace engines, many internal thread holes need to be processed on the engine case for fixed connection with other parts. Generally, the engine case is made of aluminum alloy. When it is often connected with steel parts, the shaft Under the action of axial force, it is easy to scratch and damage the aluminum thread, resulting in connection failure. Therefore, it is generally used to screw the screw sleeve into the engine case to connect with other parts, but the ordinary screw sleeve is due to its own There is no locking device, and the screw sleeve is easy to loosen and fall off in the vibration environment of the engine, causing the engine to fail to work normally. At present, there is a self-locking screw sleeve on the market such as Figure 1-2 As shown,...

AI Technical Summary

Problems solved by technology

[0002] Due to the particularity of the connection of aerospace engines, many internal thread holes need to be processed on the engine case for fixed connection with other parts. Generally, the engine case is made of aluminum alloy. When it is often connected with steel parts, the shaft Under the action of axial force, it is easy to scratch and damage the aluminum thread, resulting in connection failure. Therefore, it is generally used to screw the screw sleeve into the engine case to connect with other parts, but the ordinary screw sleeve is due to its own There is no locking device, and the screw sleeve is easy to loosen and fall off in the vibration environment of the engine, causing the engine to fail to work normally. At present, there is a self-locking screw sleeve on the market such as Figure 1-2 As shown, it has been more and more used in aerospace engines, including the knurled part on the outer surface of the screw sleeve, the flared inner hole inside the screw sleeve, and the belt for threaded connection with other parts. There is an internal thread structure and an internal hexagonal structure for cooperating with a wrench to screw the self-locking threaded sleeve into the engine casing. The wrench cooperates with the internal hexagonal structure to install the threaded sleeve on the engine first, and expand the inner diameter of the flared by external force The external knurled portion of the self-locking threaded sleeve is embedded in the base body of the engine casing to play a self-locking role. However, there is no flared locking tool specially used for the self-locking threaded sleeve in the market, resulting in inability to Installation in large quantities and low work efficiency

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