Constant-tension wire moving control device for micro electrospark wire cutting and control method thereof

Abstract

The invention provides a constant-tension wire moving control device for micro electrospark wire cutting. The constant-tension wire moving control device for the micro electrospark wire cutting comprises a machine frame, a movement control card and an industrial personal computer, wherein the machine frame is connected with a wire storage barrel clamping device, a tension pulley, a tension sensor, a guider and a wire drawing wheel which are sequentially arranged in an electrode wire moving sequence; the tension pulley is connected with a first driving motor; the first driving motor is connected with a first driver; the wire drawing wheel is connected with a second driving motor; the second driving motor is connected with a second driver; the first driver and the second driver are connected with the movement control card respectively; and the movement control card and the tension sensor are connected with the industrial personal computer respectively. The invention further provides a constant-tension wire moving control method for the micro electrospark wire cutting. The constant-tension wire moving control device and the constant-tension wire moving control method have the advantages as follows: the tension measuring error is greatly reduced; the tension control precision is improved; and the machining precision is ultimately improved.

Description

technical field [0001] The invention relates to a wire electric discharge cutting device, in particular to a micro wire electric discharge cutting constant tension wire-feeding control device and a control method thereof. Background technique [0002] Wire cut Electrical Discharge Machining (WEDM for short), which belongs to the category of electric processing, was created and invented by the Lazarinko couple in the former Soviet Union. The wire cutting machine was also invented in the former Soviet Union in 1960, and our country was the first country to use it in industrial production. Its basic physical principle is that free positive ions and electrons accumulate in the field and quickly form an ionized conductive channel. At this stage, a current is established between the two plates. As a result, countless collisions between particles form a plasma region, which quickly rises to a high temperature of 8,000 to 12,000 degrees, and some materials are instantly melted on ...

AI Technical Summary

Problems solved by technology

However, due to factors such as the shaking of the electrode wire during processing, the measurement accuracy of the previous control device and control method was low, resulting in low processing accuracy, and the drawing wheel and tension wheel were not modeled simultaneously to consider the system as a whole

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