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A bearing assembly method

A bearing assembly and bearing technology, which is applied in the field of bearings with angular limit requirements, can solve the problems of marking error assembly knocking, repeated times of assembly process, position deviation, etc., to achieve stable assembly, improve efficiency and quality, and avoid The effect of knocking on the bearing

Active Publication Date: 2018-05-08
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to marking errors and uneven assembly during assembly, the angular assembly position of the bearing 2 will deviate from the ideal state, and the collar notch 31 of the collar 3 is aligned with the bearing 2 After the boss 21, the lug 32 will also have a positional deviation from the casing notch 12 on the intermediate casing 1, which will cause the collar 3 to be unable to be assembled on the intermediate casing 1. Pull out the interference-fit bearing 2 and align it again
The assembly process is repeated many times, the assembly cycle is long, and it is easy to cause damage to the bearing 2

Method used

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Embodiment Construction

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts adopt the same reference numerals.

[0020] figure 1 Shown is a schematic diagram of an assembly relationship decomposition structure of a bearing used in an aero-engine; figure 2 A schematic diagram showing a three-dimensional exploded structure of an assembly tool according to a specific embodiment of the present invention; image 3 Shown is figure 2 Schematic diagram of the combined state structure of the assembly tool; see Figure 1-3 As shown, the present invention provides a bearing assembly method, which is used to assemble a bearing 2 without an inner ring on the intermediate case 1 of the aero-engine, the bearing 2 is interference fit with the case hole, and the collar is 3 is fixed with the s...

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Abstract

The invention relates to a bearing assembly method used for assembling a bearing without an inner ring on an intermediate case of an aircraft engine. The method includes the following steps: A, providing an assembly tool, sleeving a cylindrical portion with a bearing bush, enabling a boss to match and align with a first notch, rotationally connecting an ejector rod with a first pressure rod, and clamping the bearing with an ejector blade and a disc; B, after heating a case hole of the intermediate case or cooling the bearing, enabling a first projection to align with a case notch, and then assembling the bearing in place; disconnecting the ejector rod with the first pressure rod, taking out the ejector rod from the intermediate case, and then taking the first pressure rod out of the bearing; C, mounting a collar and a spiral retaining ring in sequence to finish assembling of the bearing. The bearing assembly method greatly improves assembly and disassembly efficiency and quality.

Description

technical field [0001] The invention relates to a processing method of an aero-engine part, in particular to a method for assembling a bearing on an aero-engine casing with angular limit requirements. Background technique [0002] figure 1 Shown is a schematic diagram of the assembly relationship decomposition structure of a bearing used in an aero-engine, see figure 1 As shown, a bearing 2 without an inner ring needs to be assembled on the intermediate case 1 of the aero-engine, and the bearing 2 is in interference fit with the case hole, and is fixed by a collar 3 and a spiral retaining ring 4 . Wherein, the left and right sides of the outer ring end face of the bearing 2 are symmetrically provided with bosses 21, and the bosses 21 are matched and aligned with the two collar notches 31 on the collar 3, and the lugs on the collar 3 32 is matched and aligned with the casing notch 12 on the intermediate casing 1, and the mutual assembly positions are unique. [0003] In th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B27/02B23P11/02
CPCB23P11/025B25B27/02F16C19/26F16C35/067F16C2360/23
Inventor 程碧玉易海周斌陈滔
Owner CHINA HANGFA SOUTH IND CO LTD
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