Wire-electrode cutting wire travelling device

Abstract

The invention discloses a wire-electrode cutting wire travelling device. According to the wire-electrode cutting wire travelling device, a wire electrode is adopted to replace the traditional shaped electrode; and a spark discharge phenomenon is utilized to perform cutting machining of a workpiece. In the machining process, a motor drives a wire winding wheel to slowly rotate to drive the wire electrode to move. Under the action of a high voltage pulse power supply, spark discharge is generated between the wire electrode and the workpiece, and the discharge generates heat so that the surface of the workpiece is melted to be removed. By using a machine tool spindle and a flexible hinge, the spatial attitude of the wire electrode can be adjusted to satisfy machining requirements. A tensioning wheel mechanism can provide a self-adaptive tensioning force so that the wire electrode travels stably and vibration is suppressed. According to the wire-electrode cutting wire travelling device, the self-adaptive flexible adjusting of wire electrode traveling can be realized, the spatial attitude, the tensioning force and direction of the wire-electrode during wire-electrode cutting are finelyadjusted to be beneficial for keeping the travelling stability of the wire electrode, and precision machining is realized.

Description

technical field [0001] The invention belongs to the field of electric discharge machining, and in particular relates to a wire cutting device. Background technique [0002] Wire EDM technology is a new type of process developed on the basis of EDM, which was first used by the former Soviet Union in the late 1950s. This technology uses wire-shaped electrode wire (copper wire or molybdenum wire) to replace the electrode, and uses the principle of electric spark discharge to realize the cutting process of the workpiece. EDM wire cutting technology is also referred to as wire cutting technology. [0003] At present, micro machinery is an important development direction of the machinery industry in the future. Compared with traditional processing methods, WEDM has great advantages in processing tiny parts with complex structures, so it has received extensive attention from scholars at home and abroad. The wire electrode wire used in wire cutting technology has a diameter in th...

AI Technical Summary

Problems solved by technology

[0005] At present, there are still some problems in the micro-wire cutting device. One is that the spatial posture of the electrode wire is often fixed and cannot be adjusted. When processing many parts, the spatial posture of the electrode wire, especially its parallelism or perpendicularity There are extremely high requirements; on the other hand, the purpose of using constant tension and wire feeding speed is to ensure the smooth wire running of the fine electrode wire. The force situation is very complicated. In the case of constant tension, it is difficult to avoid the vibration of the motor wire and even the broken wire.

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