Machine using a wire for use in electroerosion

• US 4,883,934 A
• Filed: 04/04/1988
• Issued: 11/28/1989
• Est. Priority Date: 04/03/1987
• Status: Expired due to Term

• Current Assignee: Charmilles Technologies SA (Georg Fischer AG)
• Original Assignee: Charmilles Technologies SA (Georg Fischer AG)
• Inventors: Balleys, Francois, Babel, Bernard, Mamin, Pierre-Alexandre
• Primary Examiner(s): Pellinen, A. D.
• Assistant Examiner(s): Evans, Geoffrey S.
• Application Number:
  US07/176,874
• Time in Patent Office: 603 Days
• Field of Search: 219/69 W, 219/69.12, 219/69.16, 204/206, 204/224 M
• US Class Current: 219/69.12
• CPC Class Codes: B23H 7/06 Control of the travel curve of the relative movement between electrode and workpiece

Abstract

A machine which uses electroerosion with an electrode piece by means of a stretched electrode wire unwound between two wire guides with at least one device with crossed movements to fabricate other pieces, these wire guides are equipped to displace in a parallel plane to that of the trajectory and to cut off in this way by inclining the wire to a predetermined angle in relation to a neutral perpendicular axis to this plane and to make it pivot on itself around a mobile axis parallel to this neutral axis passing by this guide and displacing itself with it. It presents also an equipped device in order to subjugate the rotation of the guide wire to displacements of the device to crossed movements. At least one of the wire guides is in preference to an open guide open to a gap.

Claims

1. A machine for usage of electroerosion of an electrode piece by means of a stretched electrode wire and divided between two wire guides with at least one device of cross movements carrying one of these wire guides and arranged in such a fashion in order to displace it into a parallel plane to the one of the trajectory to cut in a fashion by inclining the wire to a predetermined angle in relation to a neutral perpendicular axis to this plane and characterized by the fact that this device is equally arranged in order to rotate the wire guide around a mobile axis parallel to the neutral axis passing by this guide and displacing itself with it by a device put into action in order to subjugate the rotation of the wire guide to displacements of the device to cross movements.

2. The machine of claim 1 characterized by a device put into action in order to subjugate the rotation of the wire guide to predetermined inclination displacements of the device to cross movements.

3. The machine of claim 1 characterized by two wire guides that rotate each around a mobile axis and a parallel axis in parallel to a neutral axis passing by each one of the guides and displacing itself with them.

4. A machine for usage of electroerosion of an electrode piece by means of a stretched electrode wire and divided between two wire guides with at least one device of cross movements carrying one of these wire guides which is an open guide having a gap in which lodges the electrode wire according to a certain profile of guidance and arranged in such a fashion in order to displace it into a parallel plane to the one of the trajectory to cut in a fashion by inclining the wire to a predetermined angle in relation to a neutral perpendicular axis to this plane and characterized by the fact that this device is equally arranged in order to rotate the wire guide around a mobile axis parallel to the neutral passing by this guide and displacing itself with it.

5. The machine of claim 4 characterized by an open wire guide system having a small turning wheel around an axis of revolution noticeably parallel to the plane of trajectory to cut and supplied with a peripheral groove in which the wire fits, the plane of this groove being perpendicular to the axis of revolution.

6. The machine of claim 4 characterized in such a way that the wire guides are conductors of electricity and serve to feed the wire with a standard current.

7. The machine of claim 4 characterized by the fact that the orientation of the wire guide to the gap is subjugated to the displacements of the device to cross movements in such a way that the plane containing this gap contains an equal part of the stretched wire between the guides.

8. The machine of claim 4 characterized by a device equipped or arranged in order to orient the open wire guides to the gap in such a way that two thin profiles of guidance should be coplanar with the stretched wire between the guides.

9. The machine of claim 4 characterized by an open wire guide in the form of a fixed slab or a groove fitted with grooves in which the wire moves.