Method and apparatus for forming by electrochemical material removal
AssigneeRolls-Royce Deutschland Ltd & Co KG
InventorRainer Mielke
Life of this patent
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Abstract
When forming metallic components, in particular three-dimensionally curved blades, which constitute a single piece with the blading of turbomachine rotor wheels, the linear oscillation of the electrode acting as a tool is superimposed by a circular oscillation, enabling the electrode to turn into the workpiece conformally with its shape. Further forming is performed by circular oscillation with circular feed in the one and/or the other direction. An embodiment of the corresponding apparatus comprises an electrode holder (9) with linear feed (Zvor) and linear oscillation (Zosz) and a workpiece holder (5) with circular oscillation (Cosz) and circular feed (Cvor).
Claims15
A method for the forming of components of complex shape by electrochemical material removal, in which, in the presence of an electrolyte, a linear oscillation of at least one of an electrode and a component to be machined is performed relative to the other, a circular oscillation of at least one of the electrode and the component to be machined is performed relative to the other, and a linear feed and a circular feed of at least one of the electrode and the component to be machined relative to the other are performed simultaneously, as well as simultaneously to at least one of the circular oscillation and the linear oscillation.
An apparatus for the forming of components of complex shape, comprising:
- a workpiece holder for holding a component to be machined and an electrode holder for holding an electrode used to machine the component, at least one circular drive for driving one of the workpiece holder and the electrode holder in a circular oscillation and one of the workpiece holder and the electrode holder in a circular feed and a third drive for driving one of the workpiece holder and the electrode holder in a linear oscillation and a fourth drive for driving one of the workpiece holder and the electrode holder in a linear feed such that at least one of the workpiece holder and the electrode holder can be moved relative to each other with a simultaneous circular feed and linear feed, at least one of the workpiece holder and the electrode holder can be moved relative to each other with a circular oscillation, and at least one of the workpiece holder and the electrode holder can be moved relative to each other with a linear oscillation.
Dependencies are inferred from the claim text.