TOPSCNC DK7740ZT WIRE EDM MACHINES

Technical Description

The TOPSCNC DK7740ZT is a medium-speed CNC wire electrical discharge machine (EDM) designed for precision metal cutting and finishing operations. This machine features a robust working table of 840×540mm and accommodates workpieces up to 980×600mm in dimension with a maximum thickness of 300mm and weight capacity of 1000kg. The machine delivers exceptional accuracy with cutting precision of ±0.012mm and maintains excellent surface roughness of Ra≤2.5μm on first cuts, improving to Ra≤1.0μm with multiple passes. Maximum cutting speed reaches ≥200mm²/min under standard conditions, with the capability to achieve ≥300mm²/min under optimized parameters. The DK7740ZT employs a PC/104 industrial-grade motherboard with CNC control (DQE-DM-03) managing X, Y, U, and V axes through stepper motor drives. It utilizes molybdenum wire electrodes ranging from Φ0.10 to Φ0.25mm (recommended Φ0.18mm) with adjustable feed rates from 1-11.4m/s. The Z-axis offers 250mm vertical stroke for taper cutting up to ±6°/80mm. The machine incorporates advanced features including interior double-impulse protection, electrolytic safeguards, high-speed sampling circuits for precise power control, and wire-burning protection. A 90L water tank with paper filtration ensures optimal cooling and debris management. Operating on 3-phase 380V/50Hz power with 1kW consumption and maximum 12A working current, this machine weighs 2500kg and measures 2050×1720×2160mm.