US 12,594,615 B2Granted

Wire electric discharge machining apparatus

AssigneeSodick Co., Ltd.

InventorHirotoshi Inoue

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Abstract

A wire electric discharge machining apparatus includes a wire electrode and upper and lower guide devices guiding the wire electrode, and includes: a power conductor moving in a first direction as a horizontal axis direction and supplying power by contacting the wire electrode; and a fixing device fixing the power conductor in the lower guide device and switchable between a fixed state, in which a movement of the power conductor relative to the lower guide device in a second direction as another horizontal axis direction orthogonal to the first direction is not possible, and a non-fixed state in which such relative movement is possible. The wire electric discharge machining apparatus includes: a pressing device, movable relative to the lower guide device and pressing the power conductor in the non-fixed state to move in the second direction; and a movement device, moving the pressing device relative to the lower guide device.

Claims11

Dependent claims

A wire electric discharge machining apparatus, comprising a wire electrode, an upper guide, and a lower guide device,

wherein the upper guide and the lower guide device are respectively disposed on an upper side and a lower side of a workpiece to sandwich the workpiece along a vertical direction, and guide the wire electrode,
the lower guide device comprises a power conductor, and a fixing device fixing the power conductor at a predetermined position in the lower guide device,
the power conductor moves in a first direction that is a horizontal axis direction and supplies power by contacting the wire electrode,
the fixing device is configured to be switchable between a fixed state, in which a relative movement of the power conductor with respect to the lower guide device in a second direction that is another horizontal axis direction orthogonal to the first direction is not possible, and a non-fixed state in which the relative movement of the power conductor with respect to the lower guide device in the second direction is possible, and
the wire electric discharge machining apparatus comprises:
a pressing device comprising a pressing pin, configured to be relatively movable with respect to the lower guide device and press the power conductor in the non-fixed state to move in the second direction;
and
a movement device, relatively moving the pressing device with respect to the lower guide device,
wherein the fixing device comprises a power cylinder and a biasing member,
the biasing member is disposed to bias the power conductor in the first direction,
in the fixed state, the power cylinder resists a biasing force of the biasing member to push the power conductor toward the wire electrode in the first direction and fix the power conductor, and
in the non-fixed state, the biasing member pushes the power conductor away from the wire electrode in the first direction.

9 more elements

A wire electric discharge machining apparatus, comprising a wire electrode, an upper guide, and a lower guide device,

wherein the upper guide and the lower guide device are respectively disposed on an upper side and a lower side of a workpiece to sandwich the workpiece along a vertical direction, and guide the wire electrode,
the lower guide device comprises a power conductor, and a fixing device comprising a power cylinder and fixing the power conductor at a predetermined position in the lower guide device,
the power conductor moves in a first direction that is a horizontal axis direction and supplies power by contacting the wire electrode,
the fixing device is configured to be switchable between a fixed state, in which a relative movement of the power conductor with respect to the lower guide device in a second direction that is another horizontal axis direction orthogonal to the first direction is not possible, and a non-fixed state in which the relative movement of the power conductor with respect to the lower guide device in the second direction is possible, and
the wire electric discharge machining apparatus comprises:
a pressing device, configured to be relatively movable with respect to the lower guide device and press the power conductor in the non-fixed state to move in the second direction;
and
a movement device, relatively moving the pressing device with respect to the lower guide device,
wherein the pressing device comprises:
a body part linked to the movement device;
and a pressing pin provided continuously from the body part, and protruding in a direction of the second direction from the body part so that a tip of the pressing pin is abuttable against the power conductor in the lower guide device,
wherein in the pressing device, the pressing pin is set as a first pressing pin and the body part is set as a first body part,
the pressing device further comprises:
a second body part linked to the movement device;
and a second pressing pin, provided continuously from the second body part, and protruding in an other direction of the second direction from the second body part, so that a tip of the second pressing pin is abuttable against the power conductor in the lower guide device, and
the first pressing pin and the second pressing pin are disposed to sandwich the power conductor in the second direction.

13 more elements

Dependencies are inferred from the claim text.