JZ DK7740B WIRE EDM MACHINES

Technical Description

The JZ DK7740B Wire EDM machine features a travel distance of 15.75 inches (400 mm) on both the X and Z axes and 24.80 inches (630 mm) on the Y axis, providing ample working range for precision cutting tasks. It is designed for submerged operation, utilizing dielectric fluid to improve cutting accuracy and stability. The machine does not support auto threading, which requires manual wire threading. It supports a maximum workpiece size consistent with its travel dimensions and typically handles workpieces up to approximately 450-500 kg. The DK7740B achieves high precision with machining tolerances around 0.015 mm and can deliver surface roughness values as low as Ra 1.0 to 2.5 μm depending on cutting conditions. The pulse generator offers stable cutting currents up to 6-15 A, supporting cutting speeds commonly measured up to 150 mm²/min or more, contingent on the wire diameter (typically 0.12-0.20 mm) and cutting conditions. Its design incorporates resin-treated, heat-treated casting parts for rigidity and longevity, ensuring minimal vibration and high accuracy over extended use. The machine's control system usually integrates CNC software for complex contouring but lacks automatic wire threading functionality. Overall dimensions approximate 1845 mm (L) × 1610 mm (W) × 1700 mm (H), with a machine weight around 1600-1670 kg. It operates on a ~380 V supply, consuming approximately 2-4 kW of power. It is a high-accuracy, competitive-priced wire EDM solution intended for precise metal cutting under submerged conditions.