WIRE ELECTRIC-DISCHARGE MACHINING DEVICE AND WIRE-ELECTRODE REMOVING DEVICE

• US 20140319101A1
• Filed: 01/27/2012
• Published: 10/30/2014
• Est. Priority Date: 01/27/2012
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Nakajima, Yoji, Ishihara, Syuichiro
• Granted Patent: US 9,321,114 B2
• Time in Patent Office: Days
• US Class Current: 219/69.12
• CPC Class Codes: B23H 7/102 Automatic wire threading
• CPC Class Codes: B23H 7/108 Used wire disposal devices

Abstract

A wire-electrode removing device in a wire electric-discharge machining device includes a wire-electrode guide unit that has a through hole into which a wire electrode in a vertical direction is inserted at the time of electric-discharge machining using the wire electrode and guides an end on a cut point side of the wire electrode outside a running path, with the cut wire electrode arranged in the through hole, by rotationally moving about a wire-electrode guide shaft in an operation of removal of the wire electrode cut by wire-electrode cutting devices; a winding shaft unit that winds and removes the wire electrode on the cut point side guided by the wire-electrode guide unit; and a collection member that collects the wound wire electrode.

Claims

1. A wire electric-discharge machining device comprising:

a wire-electrode cutting unit that is arranged in a running path of a wire electrode and cuts the wire electrode; and

a removing unit that removes the wire electrode cut by the wire-electrode cutting unit from the running path,

wherein the removing unit includes;

a wire-electrode guide unit that is arranged below the wire-electrode cutting unit in a vertical running path of the wire electrode, has a through hole into which a wire-electrode guide pipe is inserted in a wire connection operation to perform a connection operation and the wire electrode in a vertical direction is inserted at the time of electric-discharge machining using the wire electrode, and guides an end on a cut point side of the wire electrode outside the running path, with the cut wire electrode arranged in the through hole, by rotationally moving about a wire-electrode guide shaft in an operation of removal of the wire electrode cut by the wire-electrode cutting unit;

a winding shaft unit that winds and removes, from the cut point side, the cut wire electrode guided by the wire-electrode guide unit; and

a collection member that collects the wound wire electrode.

3. The wire electric-discharge machining device according to claim 1, wherein the wire-electrode guide unit rotationally moves about the wire-electrode guide shaft, with a horizontal movement of a wound wire-electrode guide cylinder with a rack that is coupled with the wire-electrode guide shaft.

4. The wire electric-discharge machining device according to claim 1, wherein the wire-electrode guide unit has a substantially L-shaped member with a notch portion formed therein, so that a wire electrode is wound and removed by the winding shaft unit inserted in the notch portion of the substantially L-shaped member in the operation of removal of the wire electrode.

5. The wire electric-discharge machining device according to claim 4, wherein the wire electrode is sandwiched between a wound wire-electrode presser upper unit provided in the wire-electrode guide unit and a wound wire-electrode presser lower unit provided on the winding shaft unit, with a rotational movement of the wire-electrode guide unit, and a load sufficient for the wire electrode to cause plastic deformation is applied to the wire electrode at the time of winding the wire electrode by the winding shaft unit.

6. The wire electric-discharge machining device according to claim 1, wherein the winding shaft unit comprises:

a winding shaft that presses and fixes, at an end face thereof, a wire electrode on the cut point side guided by the wire-electrode guide unit and winds the wire electrode by a columnar member having corner portions with subsequent rotational driving thereof;

a winding-shaft drive unit that drives the winding shaft to press and fix the wire electrode by the winding shaft or release the pressing of the wire electrode;

a scraper member that removes the wound wire electrode from the columnar member at the time of releasing the pressing of the winding shaft by the winding-shaft drive unit; and

a collection member that collects the removed wire electrode.

7. The wire electric-discharge machining device according to claim 1, wherein wire-electrode pressing rollers that hold the wire electrode at the time of guiding the end on the cut point side of the wire electrode outside the running path by the wire-electrode guide unit are arranged below the wire-electrode guide unit.

8. The wire electric-discharge machining device according to claim 1, wherein the columnar member of the winding shaft has a cross section of a concave polygonal shape.

2. (canceled)

9. A wire-electrode removing device in a wire electric-discharge machining device that includes a wire-electrode cutting unit arranged in a running path of a wire electrode and cutting the wire electrode, and a removing unit that removes the wire electrode cut by the wire-electrode cutting unit from the running path, the wire-electrode removing device used as the removing unit comprising:

a wire-electrode guide unit that is arranged below the wire-electrode cutting unit in a vertical running path of the wire electrode, has a through hole into which a wire-electrode guide pipe is inserted in a wire connection operation to perform a connection operation and the wire electrode in a vertical direction is inserted at the time of electric-discharge machining using the wire electrode, and guides an end on a cut point side of the wire electrode outside a running path, with the cut wire electrode arranged in the through hole, by rotationally moving about a wire-electrode guide shaft in an operation of removal of the wire electrode cut by the wire-electrode cutting unit;

a winding shaft unit that winds and removes, from the cut point side, the cut wire electrode guided by the wire-electrode guide unit; and

a collection member that collects the wound wire electrode.