Machining device for deep-hole high-precision sealing surface

Abstract

The invention discloses a machining device for a deep-hole high-precision sealing surface. The machining device of the deep-hole high-precision sealing surface comprises a sleeve and a pin rod, wherein the sleeve is T-shaped; a cylinder which protrudes outwards is formed in the centre of the bottom surface of the sleeve; the size of the outside diameter of the cylinder is adapted to that of the inside diameter of a deep hole to be machined; two mounting holes which are symmetrical with the cylinder are formed in the bottom surface; the size of the diameter of the pin rod is adapted to that ofthe inside diameter of the cylinder; knurls are formed along the outer wall of the upper end of the pin rod; a lug boss is formed at the lower end of the pin rod; the size of the countertop of the lugboss is adapted to that of a sealing surface with the deep hole to be machined; the countertop of the lug boss is a grinding surface; after the sealing surface is machined by using the machining device, the hole machining deformation of a part is greatly improved; the part yield is improved; the machining preparation time is greatly shortened, and meanwhile, the size precision is greatly improved; the technical requirement of 100 percent coloring of an end surface of the part can be met; the machining device can be popularized and applied to the machining of parts of the same type of other machine models; and the machining performance of a casing is improved.

Description

technical field [0001] The invention belongs to the processing and manufacturing technology of lubricating oil accessory parts of aero-engines, and in particular relates to a processing device for deep-hole high-precision sealing surfaces. Background technique [0002] The coloring of the oil accessory valve seat of a certain type of machine is unqualified. During the assembly process, it is found that the verticality and flatness between the bottom surface of the oil accessory valve and the hole are unqualified, such as Figure 4-5 As shown, the bottom surface of the valve seat of this part is in the process of processing, because it cooperates with another part to seal the oil, so the plane coloring checks the flatness, and at the same time it needs to be perpendicular to the center line of the hole, which is very difficult to process and measure. Therefore, it is urgently needed A machining tool specially designed for machining such sealing surfaces is provided. Contents...

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Problems solved by technology

[0002] The coloring of the oil accessory valve seat of a certain type of machine is unqualified. During the assembly process, it is found that the verticality and flatness between the bottom surface of the oil accessory valve and the hole are unqualified, such as Figure 4-5 As shown, the bottom surface of the valve seat of this part is in the process of

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