The JZ DK77120 is a CNC wire electrical discharge machining (EDM) system engineered for precision cutting of conductive materials. It features substantial travel dimensions of 47.24 inches (X-axis), 62.99 inches (Y-axis), and 19.69 inches (Z-axis), accommodating large workpieces up to 900mm in thickness. The machine delivers a maximum cutting speed of 150-180 mm²/min with exceptional surface roughness of Ra ≤ 2.5 micrometers, meeting GB7926-2005 precision standards. The DK77120 employs molybdenum wire electrodes ranging from 0.12-0.18mm diameter and supports tapered cutting capabilities of up to 3-6 degrees per 80mm of thickness. Operating in a submerged cutting environment optimizes thermal control and dielectric fluid circulation for superior finish quality. The machine incorporates a 1300×1900mm worktable with 4500kg maximum load capacity and utilizes domestic bearing steel guide rails with high-grade domestic and Japanese bearings for rigid, repeatable machining. Control is managed through integrated CNC programming software featuring graphical tracking, arbitrary angle rotation, symmetrical machining, and automatic wire-break protection. The system requires a 2KVA three-phase 380V, 50Hz power supply and weighs approximately 8500kg. Its robust construction, precision spindle guidance, and advanced control functions make it ideal for manufacturing punches, dies, molds, and intricate precision components across automotive, aerospace, and industrial sectors.