Machine tool and wire tightening device and method thereof

Abstract

The invention discloses a wire tightening device. The wire tightening device comprises a main guide wheel, and further comprises a slide block which is connected with the main guide wheel and used fordriving the main guide wheel to move in the horizontal direction, and a plurality of first springs which are used for making contact with and abutting against the slide block to achieve electrode wire tensioning force adjusting. The invention further discloses a wire tightening method and a machining tool comprising the wire tightening device and the wire tightening method. Through the wire tightening device, continuous tensioning of electrode wires can be achieved, and in addition, it can be ensured that the tensioning forces of the two sides are equal in magnitude so that electrode wire breaking can be avoided. The machine tool provided with the wire tightening device can automatically adjust the wire tightening force in the machining process, and accordingly, the machining efficiency of the machine tool can be improved. Through the wire tightening method, the wire tightening force can be automatically adjusted in the forward and reverse rotating processes of a wire storage barrel under linkage action of the two wire tightening devices so that the flexible electrode wire tightening function can be achieved.

Description

technical field [0001] The invention relates to the technical field of machine tool processing, in particular to a wire tightening device and a wire tightening method. The invention also relates to a machine tool with the wire tightening device. Background technique [0002] Wire-cut electric discharge machining technology, commonly known as EDM, its principle is based on electric discharge machining technology. The so-called EDM technology is a processing technology for metal materials proposed by the former Soviet scientists Lazarenko and his wife when they discovered that the metal material inside the switch was melted and aged due to spark discharge. The principle is that the discharge electrode When the distance from the conductive material is quite close, due to the high voltage between the electrodes, it is easy to ionize the ions in the air between the electrodes, thereby forming a discharge channel and removing the conductive material. Based on this principle, EDM...

AI Technical Summary

Problems solved by technology

However, at present, machine tools generally do not have a spring wire tightening device. During production, the wire electrode is prone to jumping during movement, and it needs to be reloaded or tightened, which also leads to interruption of processing; and the machine tool does not have a constant tension mechanism, so the wire electrode is not stressed. uniform

[0004] Therefore, how to avoid processing interruption due to the inability to realize the continuous tension of the electrode wire during the movement process is a technical problem that those skilled in the art need to solve at present.

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