Electric discharge machine with mechanism for orbiting the electrode
OwnerWilliam J. Gaumondinventor
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Abstract
An electric discharge machine has an electrode and mechanism for driving the electrode on an orbital path. The electrode is mounted on an electrode holder having an upstanding post. The electrode is driven on its orbital path by a rotor about the post. There are two resiliently loaded drive arms mounted on the rotor and engaged with the post at circumferentially spaced points so that the post is subject to the compound driving force of both drive arms. Centering mechanism is provided to restore the electrode to a centered position with respect to its orbit in the event of a short circuit between the electrode and the workpiece, thus to break the short circuit.
Claims4
In an electric discharge machine having an electrode holder and means for driving said holder on an orbital path, said means including a post on the electrode holder, a rotor about the post and a first resiliently loaded drive arm mounted on the rotor and engaged with the post, the improvement comprising a second resiliently loaded drive arm mounted on the rotor and engaged with the post at a point offset circumferentially from the point of engagement with the post of the first-mentioned drive arm whereby the post is subject to the composite driving force of both drive arms.
Dependencies are inferred from the claim text.