Method for machining half-and-half casings of gas compressor of aero-engine

An aero-engine and processing method technology, which is applied in the field of aero-engine processing, can solve the problems of poor consistency of accuracy, easy deformation, and difficulty in ensuring the position of precision holes on the longitudinal bonding surface, etc., to achieve qualified flatness, eliminate combined deformation, and repeat Combination of good accuracy and consistency

Active Publication Date: 2014-03-12
CHINA HANGFA SOUTH IND CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for processing the half casing of the compressor of an aero-engine, so as to solve the technical problems that it i

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  • Method for machining half-and-half casings of gas compressor of aero-engine

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Embodiment Construction

[0020] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

[0021] Such as figure 1 As shown, the processing method of the half casing of the compressor of the aero-engine of the present embodiment comprises the following steps: a, the flatness of the longitudinal bonding surface of the two half half casings is processed, and the two half half casings after the rough machining The casing is plane-processed in the way that the datum plane is close to ensure the flatness of the longitudinal bonding surface of the two halves of the casing; b. The mutual position of the corresponding screw mounting holes on the longitudinal bonding surface of the two halves of the casing , finish machining at least part of the correspondingly set screw mounting holes, and place screws with positioning cylinders in the finished s...

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Abstract

The invention discloses a method for machining half-and-half casings of a gas compressor of an aero-engine. The method comprises the following steps that a, flatness processing is carried out on the longitudinal faying surfaces of the two half-and-half casings, wherein plane processing is carried out on the two half-and-half casings after rough machining in a mode that the base levels abut against each other so as to ensure the flatness of the longitudinal faying surfaces of the two half-and-half casings; b, the mutual location degree processing is carried out on corresponding screw installation holes in the longitudinal faying surfaces of the two half-and-half casings, wherein finish machining is carried out on at least part of screw installation holes which are correspondingly formed, and screws provided with locating cylindrical surfaces are arranged in the screw installation holes after the finish machining in a matched mode; c, the screws are assembled in the screw installation holes of the longitudinal faying surfaces of the two half-and-half casings according to the preset optimized assembly sequence; d, the two half-and-half casings form an integrated casing of the gas compressor. The method for machining the half-and-half casings of the gas compressor of the aero-engine adopts the half-and-half casing combined deformation control technology, combined deformation of the half-and-half casings is eliminated, the accuracy of consistency of repeated combination is good, and the application prospects are wide.

Description

technical field [0001] The invention relates to the technical field of aero-engine processing, in particular to a method for processing a half casing of a compressor of an aero-engine. Background technique [0002] The compressor part of the aero-engine widely adopts the half casing (or called the half casing), which is composed of two half-ring left and right half casings combined with precision positioning screws through the screw holes on the longitudinal bonding surface. The diameter, roundness and coaxiality of the assembled front and rear flanges have very high requirements. Due to the poor rigidity of the two halves of the casing, it is easy to deform during processing, and the longitudinal bonding surface of the two casing halves is prone to warping and deformation; it is difficult to ensure that the position of the precision hole on the longitudinal bonding surface is ≤Φ0.02mm. The mutual position of the holes is poor. These factors lead to the easy deformation of ...

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 林虎丁琪李军杨国文
Owner CHINA HANGFA SOUTH IND CO LTD
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