Method of polishing bladed disks for a turbomachine and polishing device
AssigneeSnecma
InventorsCyrille Baudimont, Jean-Francois Laurent Chabot
Life of this patent
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Abstract
A device for polishing centrifugal impellers for a turbomachine including a vat configured to be filled with a polishing agent, and an impeller support configured to make the impeller rotate around its axis and move it along its axis such that all of points of the impeller have a helical movement whereof the pitch is close to that of the helix from which the general shape of the airflow channels of the impeller comes, delimited by the blades of the impeller.
Claims18
1-17. (canceled)
A method for polishing a bladed disk, the blading disk including a plurality of blades defining, two by two, an airflow channel substantially having a general profile in a form of a helix portion with pitch p, the disk being submerged in a bed of polishing agent, the method comprising:
- a) moving the disk in a first direction of rotation around the longitudinal axis of the disk and in a first direction of translation along the longitudinal axis simultaneously, such that a travel of each of points of the disk is at least a portion of a helix, whereof the pitch is close to the pitch p of the helix from which the general shape of the airflow channels comes.
A polishing device comprising:
- a vat configured to be filled with a polishing agent;
- a bladed disk support, the blading comprising a plurality of blades defining, two by two, an airflow channel substantially having a general profile in a form of a helix portion with pitch p;
- and
- driving means for driving the support in rotation around its longitudinal axis and in translation along the longitudinal axis simultaneously, so as to make at least a portion of the helix, the pitch of which is close to the pitch p from which the general shape of the airflow channels of the disk to be polished comes, travel to each point of the support.
Dependencies are inferred from the claim text.