High Speed Wire Cutting Machine Dk77100

Product Description

Machining principle of DK77100 wire electrical discharge wire edm machine

Wire electrical discharge wire edm machine is processed by connecting the electrode wire to the negative pole of the pulse power supply, and the workpiece to the positive pole of the pulse power supply. After the high-frequency pulse power supply is powered on, when the distance between the workpiece and the electrode wire is less than the discharge distance, the pulse power can ionize and puncture the medium (working fluid) to form a discharge channel.

Under the action of electric field force, a large number of negatively charged electrons rush to the positive electrode at high speed, and positively charged ions rush to the negative electrode. The high temperature generated by ionization melts and even gasifies the workpiece surface, so that the metal is thrown out with the movement of electrode wire and the impact of working fluid, thus forming pits on the workpiece surface.

In the high temperature zone, due to the polarity effect, the energy distributed between the electrode wire and the workpiece is different, so the surface temperature of the electrode wire and the workpiece is also different. Moreover, because the melting temperature of the electrode wire is much higher than that of the workpiece material, and the electrode wire leaves the high temperature zone at high speed, the amount of electrode erosion in the high temperature zone is much less than that of the workpiece, This makes the workpiece surface form large pits.

A small pit is formed on the surface of the electrode wire. Because the machining process is continuous, the stepping motor is controlled and attacked continuously to maintain the necessary gap between the electrode wire and the workpiece for discharge, so the workpiece is gradually cut out a gap.

Techical Parameter