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"Medium-speed wire-cut EDM" is a type of electrical discharge machining technology that employs a composite wire-feed method—combining high-speed wire travel (8–12 m/s) for roughing and low-speed travel (1–3 m/s) for finishing—along with a multi-pass cutting process to minimize errors caused by material deformation and molybdenum wire wear [3]. Its machining quality falls between that of high-speed and low-speed wire-cut machines, achieving precision levels of ±0.005 mm and surface roughness values of Ra 1.4–1.7 μm [1]. The process utilizes pulsed power discharges to erode material and employs a working fluid for insulation and cooling; it is suitable for machining molds, precision parts with complex geometries, and intricate components for the automotive and aerospace industries.
It is primarily used to machine workpieces with complex shapes and intricate, precise details—such as mold punches and dies. It evolved from EDM (Electrical Discharge Machining) piercing and sinking processes; not only has it expanded the scope of EDM applications, but in certain respects, it has also superseded piercing and sinking EDM. Wire-cut EDM machines now account for the majority of all EDM machine tools.
Components of a Medium-Speed Wire-Cut EDM Machine
1. Machine tool body: machine bed, wire frame, wire feed mechanism, and X-Y CNC worktable
2. Working fluid system
3. High-frequency power supply: generates high-frequency rectangular pulses; pulse amplitude and pulse width can be adjusted according to different operating conditions.
4. CNC and servo systems
Products Parameters (Servo Wire EDM):
Model | SC300 | SC450 | SC550 | SC630 |
Worktable size （mm) | 630×430 | 800×550 | 880×570 | 1000×750 |
Worktable travel (mm) | 300×250 | 450×350 | 550×450 | 630×500 |
Max cutting height (mm) | 280 | 300 | 300 | 300 |
optional | / | 500 | 500 | 500 |
Max cutting taper | ±6° /80mm | ±12° /80mm | ±12° /80mm | ±12° /80mm |
Max Loading (kgs) | 300 | 300 | 400 | 600 |
Max cutting speed ( mm²/min) | 300 | 300 | 300 | 300 |
Cutting accuracy (mm) | ±0.005 | ±0.005 | ±0.005 | ±0.005 |
Best cutting roughness (Ra) | 0.8um | 0.8um | 0.8um | 0.8um |
Wire diameter | 0.1-0.2mm | 0.1-0.2mm | 0.1-0.2mm | 0.1-0.2mm |
Water tank volume | 120L | 120L | 120L | 120L |
Machine power (kw) | 2.5KW | 2.5KW | 2.5KW | 2.5KW |
Machine weight( kgs) | 1800 | 2000 | 2300 | 2700 |
Machine size (mm) | 1400×1400×1850 | 1800×1800×1900 | 1900×1900×1900 | 2000×2000×2000 |
