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Method for repairing corner of locating pin of bearing case

A technology of bearing casing and locating pin is applied in the field of aero-engine to achieve the effects of low processing difficulty, cost saving and simple repair operation

Inactive Publication Date: 2015-03-04
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems existing in the prior art, the present invention provides a method for repairing the corner of the positioning pin of the bearing casing with low processing difficulty, low repair cost, reliable repair quality, and no welding deformation problem

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  • Method for repairing corner of locating pin of bearing case
  • Method for repairing corner of locating pin of bearing case
  • Method for repairing corner of locating pin of bearing case

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Embodiment Construction

[0017] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Repair the structure of the positioning pin part of the front bearing casing, such as figure 1 As shown, the bearing case is repaired by adopting the method for repairing the positioning pin angle of the bearing case of the present invention, which specifically includes the following steps:

[0019] Step 1: processing the plugging pin 3, which corresponds to the hole of the original positioning pin;

[0020] Step 2: Pull out the original positioning pin 2 of the bearing casing 1, align the bearing casing 1 on the machine tool and fix it, and use the original positioning pin hole as a reference, rotate the bearing casing 1 by 9° and process the new positioning pin hole , and process a 30° chamfer;

[0021] Step 3: Install the plugging pin 3 in the original positioning pin hole, and install the new positioning pin 4 in the new ...

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Abstract

The invention provides a method for repairing a corner of a locating pin of a bearing case, belongs to the technical field of aero-engines, and relates to a repairing method of the bearing case. The method for repairing the corner of the locating pin of the bearing case, provided by the invention, has the advantages that the machining difficulty is low, the repairing cost is low, the repairing quality is reliable, and no welding deformation problem is generated. The method comprises the following steps of step 1, machining a hole blocking pin, and enabling the hole blocking pin to correspond to an original locating pin hole; step 2, pulling out an original locating pin of the bearing case, aligning the bearing case to a machine tool and fixing the bearing case, and machining a new locating pin hole after the bearing case is rotated in an angle by taking the original locating pin hole as the standard; step 3, installing the hole blocking pin in the original locating pin hole, and installing a new locating pin in the new locating pin hole.

Description

technical field [0001] The invention belongs to the technical field of aero-engines, and relates to a repair method for a bearing casing, in particular to a repair method for a positioning pin rotation angle of a bearing casing. Background technique [0002] When the aero-engine is in use, the protruding part of the elastic ring is in contact with the intermediate casing and the bearing casing during the operation of the engine, which may easily cause wear on the contact surface between the intermediate casing and the bearing casing of the high-pressure compressor and the elastic ring; in order to ensure that the engine For reliable operation, the wear depth is required to be no more than 0.04mm. When the wear exceeds the standard, if the repair method of repairing welding first and then machining is used, there will be too many repair welding positions (up to 20 places), the parts are prone to welding deformation or even scrapped, and it is difficult to align after repairin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
CPCB23P6/00
Inventor 王维东包宏强李春波王华徐艳实
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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