Machining method for aero-engine tight-sealing labyrinth disc

An aero-engine and grate-sealing technology, which is applied to engine components, machines/engines, mechanical equipment, etc., can solve the problems such as the inability to guarantee the size of the grate disc and the difficult deformation of the grate disc, so as to ensure dimensional stability and consistency. performance, control cutting deformation, and enhance rigidity

Active Publication Date: 2018-01-19
无锡航亚科技股份有限公司
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  • Abstract
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Problems solved by technology

[0003] In view of the above problems, the present invention provides a processing method for sealing the grate toothed disc of an aero-engine, which can solve the problem that it is difficult to control the deformation of the grate toothed disc by using the existing processing method, resulting in the size of the grate toothed disc cannot be guaranteed Problems, so that the processing quality of the grate tooth plate can be guaranteed

Method used

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  • Machining method for aero-engine tight-sealing labyrinth disc
  • Machining method for aero-engine tight-sealing labyrinth disc
  • Machining method for aero-engine tight-sealing labyrinth disc

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Embodiment Construction

[0023] see Figure 2-Figure 7 , The processing method of an aeroengine sealing grate disk of the present invention includes the following steps:

[0024] Step 1. Design the part corresponding to the grate teeth of the grate disc blank D as the first process edge 1, and design the part corresponding to the upper web of the grate disc blank D as the second process edge 2, such as figure 2 Shown

[0025] Step 2, first use the hook-shaped pressing plate 3 of the first process edge fixture A to press and position the first process edge 1 on the first fixture bottom plate 4, and pour into the groove 7 enclosed by the auxiliary support ring 5 and the baffle 6 The low melting point alloy is used to support the hub part of the grate disc blank D (other support methods such as adjustable support or elastic support can also be used), and then process the front face 8 of the lower spoke plate and the front face 9 of the hub, such as figure 2 As shown by the bold line in the middle (the dotte...

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Abstract

The invention provides a machining method for an aero-engine tight-sealing labyrinth disc. According to the machining method, the problem that when the labyrinth disc is machined through an existing machining method, deformation of the labyrinth disc is difficult to control, and thus the side of the labyrinth disc cannot be guaranteed can be solved. The machining method comprises the following steps that the positions, corresponding to labyrinth teeth, of a labyrinth disc blank are designed as the first technological edge, and the position, corresponding an upper spoke plate, of the labyrinthdisc blank is designed as the second technological edge; the labyrinth disc blank is clamped and positioned through the first technological edge, and a lower spoke plate and a hub are machined; the labyrinth disc blank is clamped and positioned through the second technological edge, and the labyrinth teeth are machined; and the labyrinth disc blank is clamped and positioned through a main installation datum surface of the lower spoke plate, the upper spoke plate is machined, and the labyrinth disc is processed.

Description

Technical field [0001] The invention relates to the processing field of aero-engine sealing grate discs, in particular to a processing method of aero-engine sealing grate discs. Background technique [0002] figure 1 It is a cross-sectional view of the sealed grate disk of a certain engine in the radial direction, which includes a hub 28, a lower spoke plate 29, an upper spoke plate 30 and a grate tooth 31 arranged from the inside to the outside. The upper part of the lower plate 30 is mainly installed At reference surface 21, the outer diameter of the grate disc is 540mm, and the thinnest part of the web is only 2.7mm. The material of the grate disc is powder high temperature alloy, and the grate disc is deformed very seriously during processing. In order to achieve the purpose of normal processing of the grate disc, it is customary to design the process edges of different structures at the largest outer circle of the grate disc, that is, to construct the boss, and then first ax...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00F01D11/00
Inventor 杨庆芳徐进姚煜
Owner 无锡航亚科技股份有限公司
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