Auxiliary hole sealant coating tool and sealant coating method
A technology of process hole and sealant, which is applied in the direction of coating and liquid coating device on the surface, etc., can solve the problems of uncontrollable sealant usage, hidden danger of engine quality, blockage of oil circuit, etc., and reduce the return to factory maintenance rate , solve the effect of excess sealant and easy operation
Inactive Publication Date: 2018-12-18
AECC AVIATION POWER CO LTD
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Problems solved by technology
Since the process hole becomes a blind hole after the assembly is completed, it is difficult to control the amount of sealant used, and the excess sealant will block the oil circuit inside the parts, causing hidden dangers to the quality of the engine
Method used
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Embodiment
[0036] Using the coating tool of the present invention to apply a sealant to the process hole of a certain type of aero-engine casing comprises the following steps:
[0037] Step 1, making a process hole sealant coating tool, the outer diameter of the coating tool coating end 2 is smaller than the shell process hole 3, and the shell process hole 3 inner diameter is The outer diameter of coated end 2 is The length of the coating end 2 is less than the depth of the process hole 3 of the shell, and the depth of the process hole 3 of the shell is The coating end 2 of the coating tool has a length of 4 mm.
[0038] Step 2. Clean the process hole 3 of the shell, use the coating end 2 to dip the sealant, remove the sealant on the end face of the coating end 2, extend the coating end 2 into the process hole 3 of the shell and rotate slowly, Ensure that the wall of the process hole 3 of the shell is evenly coated with a layer of sealant; the amount of sealant coating is controlled...
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The invention discloses an auxiliary hole sealant coating tool. The auxiliary hole sealant coating tool comprises a rod body. The two ends of the rod body are both provided with coating ends. The diameter of the rod body is larger than that of an auxiliary hole, the diameters of the coating ends are smaller than the diameter of the auxiliary hole, and the lengths of the coating ends are smaller than the depth of the auxiliary hole. The two ends of the rod body are both provided with the coating ends, the diameter of the rod body is larger than that of the auxiliary hole, operation is facilitated, the diameters of the coating ends are smaller than the diameter of the auxiliary hole, the coating amount of a sealant in the auxiliary hole can be accurately controlled, the lengths of the coating ends are smaller than the depth of the auxiliary hole, the situation that the sealant enters the auxiliary hole is avoided, the technical problem that the sealant in the auxiliary hole is frequentlyredundant is solved, the delivery quality of products is guaranteed, and the return to factory maintenance rate of the products is greatly reduced.
Description
technical field [0001] The invention belongs to the technical field of mechanical assembly, and in particular relates to a process hole sealant coating tool and a sealant coating method. Background technique [0002] The structure of the central gear box of a certain machine is complex, and the lubricating oil circuit adopts a built-in type. During the processing process, 10 nozzle oil circuits adopt indirect drilling, especially the 16 process holes on the rear end surface connected with the intermediate casing. After the processing is completed, a suitable plug must be selected and installed in the process hole after coating the sealant on the cylindrical surface of the plug to ensure that the rear end surface of the shell does not seep oil. Since the process hole becomes a blind hole after the assembly is completed, it is difficult to control the amount of sealant used, and the excess sealant remaining inside the part will block the oil circuit and cause hidden dangers t...
Claims
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IPC IPC(8): B05C1/00B05C1/04B05C21/00
CPCB05C1/00B05C1/04B05C21/00
Inventor 王幸李建锋白立欣徐佳伟梁影姚世珍
Owner AECC AVIATION POWER CO LTD