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US 2013/0171915 A1Published application
Optimised manufacturing process for a vaned monobloc disc by abrasive water jet
AssigneeSnecma
InventorsPerrine De La Rupelle, Serge Berlanger, Mitch Miller, William Pearson, Mark Stromberg
Life of this patent
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Abstract
A manufacturing process of a monobloc vaned disc including a cutout by abrasive water jet of a block of material in general form of a disc, carried out so as to remove material from the block at a level of inter-vane spaces to reveal vane preforms extending radially from a hub, the cutout by abrasive water jet including, for making each inter-vane space: a first triple-axis cutout of a piece passing through the thickness of the block, used such that the cutout piece escapes from the block automatically by gravity; followed by at least one enhancement cutout.
Claims10
1-9. (canceled)
10:
- A process for manufacturing a monobloc vaned disc, comprising:
- a cutout by abrasive water jet of a block of material in general form of a disc, carried out so as to remove material from the block at a level of inter-vane spaces to reveal vane preforms extending radially from a hub, the cutout by abrasive water jet comprising, for making each inter-vane space:
- a first triple-axis cutout of a piece passing through the thickness of the block, used such that the cutout piece escapes from the block automatically by gravity;
- followed by
- at least one enhancement cutout.
2 more elements
11:
- The manufacturing process as claimed in claim 10, in which the cutout by abrasive water jet, carried out by a tool including an ejection head of an abrasive water jet, comprises:
- the first cutout, carried out with the ejection head opposite a first face of the block;
- followed by plural enhancement cutouts, whereof at least one is carried out with the ejection head opposite the first face of the block, and whereof at least another is carried out with the ejection head opposite a second face of the block, opposite the first.
12:
- The manufacturing process as claimed in claim 11, in which, during the cutout by abrasive water jet aiming to obtain all the inter-vane spaces, the following are successively carried out:
- all the cutouts with the ejection head opposite the first face of the block;
- a relative shift between the block and the ejection head to guide the ejection head opposite the second face of the block;
- and
- all the cutouts with the ejection head opposite the second face of the block.
2 more elements
13:
- The manufacturing process as claimed in claim 12, in which the relative shift between the block and the ejection head is made by turning over the block.
14:
- The manufacturing process as claimed in claim 10, in which the cutout by abrasive water jet is carried out such that at least during enhancement cutout one cutout piece escapes from the block automatically by gravity.
15:
- The manufacturing process as claimed in claim 10, in which the cutout by abrasive water jet is carried out such that, for at least one cutout piece during enhancement cutout and remaining blocked in its associated inter-vane space after its cutout, the piece is split, by cutting by abrasive water jet, into at least two sub-pieces capable of escaping from the block automatically by gravity.
16:
- The manufacturing process as claimed in claim 10, in which each enhancement cutout is a five-axis cutout.
17:
- The manufacturing process as claimed in claim 10, in which the cutout by abrasive water jet of the block of material is carried out so as to reveal the vane preforms extending radially from the hub, while preserving the material forming connecting means between at least two directly consecutive vane preforms, the connecting means being spaced radially from the hub.
18:
- The manufacturing process as claimed in claim 10, further comprising:
- a milling of the vane preforms carried out so as to obtain profiled vane blanks;
- and
- a finishing milling step of the vane blanks, so as to obtain vanes on a final profile.
1 more element