Manufacturing method and device of felt sealing ring for aviation and stamping die

Abstract

The invention relates to a manufacturing method and device of a sealing ring, in particular to a manufacturing method and device of a felt sealing ring for aviation and a stamping die, and solves the problems that an inner hole of the felt sealing ring machined by an existing method is prone to hair slip and unstable in shape and size. The method comprises the following steps: punching felt into an annular blank by using a punching die according to a part drawing, loading the annular blank into a roasting clamp, roasting, inspecting and infiltrating. The device comprises a stamping die and a roasting clamp. The male die and the female die in the punching die are both provided with inclined cutting edges, so that the punched section of the felt is straight, deformation is small, high size precision can be obtained, meanwhile, the male die, the female die and the supporting block are coaxial and provided with radial fit clearances, and the punched end face of the annular blank is straight. The annular blank is roasted through the roasting clamp, redundant broken filaments in the inner hole are removed, shaping is achieved, and therefore the sealing ring manufactured through the method is free of protruding broken filaments in the inner hole, free of hair falling and stable in shape and size.

Description

technical field [0001] The invention relates to a method and a device for manufacturing a sealing ring, in particular to a method and a device for manufacturing a felt sealing ring for aviation. Background technique [0002] The purpose of the felt seal is to lubricate the adjuster guide rod and to keep dust and other contaminants from getting between the guide rod and the bushing. Its material is industrial fine felt (natural wool processed and bonded by milling process), product number 112-44, thickness 2.5±0.5 mm. At present, the conventional manufacturing method of this type of felt sealing ring is: first cut the felt into the required annular blank, and then infiltrate it with lubricating grease. The sealing ring manufactured by this method has many protruding hairs in the inner hole, and the shape and size are unstable; secondary hazards. Therefore, in order to ensure the reliable and stable operation of the regulator, it is an urgent problem to be solved at present...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method and device for manufacturing felt sealing rings for aviation, so as to overcome the problems that the inner hole of the felt sealing rings processed by the existing method is easy to lose hair, and the shape and size are not stable.

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