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A method is described for balancing a rotating part by partial melting a designated area of the part by a laser beam and radially displacing the melted material by means of a gas stream.
English (United States)
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On Fly Laser Balancing by Melting and Displacing Material
A method is described for balancing a rotating part by partial melting a
designated area of the part by a laser beam and radially displacing the melted
material by means of a gas stream.
A rotating part 1 to be balanced is coupled to a mechanism to determine the
location of a mass needed to balance the part. A laser beam 2 is directed
through an opening in a suitable housing 3 to impinge on the designated
balancing location on the part to selectively melt a small area of the part at the
balance location. A jet of gas moving concentric to the laser beam overcomes
the centrifugal force and displaces the molten material radially inward. The
movement of the displaced material 4 reduces the moment of inertia and
changes the balance. This method can be used in work areas in which
restrictions on particle content in the environment are present, and also in work
areas in which access to the part is not convenient.