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Part-holding device

A technology of locking devices and fixing devices, applied in positioning devices, auxiliary devices, clamps, etc., can solve problems such as unacceptable effects, difficulty in using electronic welding methods, and difficulty in implementing standard methods, and achieve The effect of reliable repair

Active Publication Date: 2012-05-30
SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Furthermore, TIG-type or micro-plasma-type techniques traditionally used by the aerospace industry do not achieve acceptable results for a Ti17 alloy rotor
[0008] In addition, recent blades are three-dimensional complex shapes with variable wall thicknesses, making it difficult to use electronic welding methods, which require very precise parameter determination
These parameters must be determined when considering each specific situation, any standard method is difficult to implement

Method used

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Examples

Experimental program
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Embodiment Construction

[0052] The method of repairing the blade, which is the object of French patent application FR 0 508 151, will firstly be described below, ie the method that can be implemented with the clamping device according to the invention.

[0053] see figure 1 , this method involves the repair of a blade 2 extending radially around the rim 3 of a monolithic rotor blade disk 1 (DAM1), where the blade is made of a so-called Ti17 titanium alloy material. Such blades show an area of ​​damage due to impact or friction. The areas that may be damaged are the leading edge 4, the trailing edge 5, the leading edge 6, the trailing edge 7 and the top 8 of the blade where a lip seal is used, forming the known tapered portion.

[0054] Standard sections were preliminarily defined on the blade, where areas of damage that might require repair were marked, corresponding to sections of the blade that would need to be removed for replacement. The first process step of the method is to check whether the ...

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PUM

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Abstract

This invention relates to a part-holding device in a method for repairing a blade of a monobloc bladed disc of a turbo-machine, through electron-beam welding of a patch onto the blade along a junction plane. The device comprises means for supporting the disc and adjustable means for holding the blade and the patch, the latter comprising a platen supporting means for holding the blade and means for holding the patch, arranged such that the space located above the junction plane allows for an electron beam to pass. Implementing the present invention, the relative positions of the blade and the patch are set using holding means that are all supported by a same platen, while leaving some space allowing for an electron beam to pass. Such a device is simple and reliable.

Description

technical field [0001] The invention relates to a component clamping device used in a method for repairing a turbine integral rotor blade disc blade. Background technique [0002] A turbojet engine comprises various rotors rotating about its axis. These rotors consist of a disk with a kind of rim along which the blades are fastened. Traditionally, blades are held clamped by inserting their roots into the appropriate blade root chamber for their use. In order to meet the ever-increasing performance requirements of engines, such rotors are currently integral rotors. This is the so-called Monobloc Bladed Discs (DAM). In a DAM, the blade and the disc are made as one piece. For this purpose, machining is carried out on a forged blank so that the disc is formed, the blades extending radially around its circumference, and the entire part is a single or monolithic piece. Of course, part of the parts can also be welded, and the final DAM is a whole piece. Integral rotors have m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K37/04B23K37/047B23K37/053B23K15/00F01D5/00B23P6/00
CPCB23K15/0006B23K37/0443B23Q3/063B23P6/005B25B5/14B23K2201/001B23K2101/001Y10T29/49318Y10T29/49316Y10T29/4932
Inventor 格哈德·德里恩斯坦弗尼·科内斯杰魁斯·弗朗西斯·勒圣特克劳德·安德鲁·查尔斯·派格诺
Owner SN DETUDE & DE CONSTR DE MOTEURS DAVIATION S N E C M A