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DD703-400
EDM Hole Drilling Machine
A precision high-speed small-hole EDM drill engineered to deliver clean, burr-free holes from φ0.3 to 3.0 mm at machining speeds up to 30 A. Trusted by tool and mold makers worldwide for cooling channels, wire thread holes, and production drilling — with the repeatability your quality system demands.
Built for High-Speed, High-Precision Hole Drilling
A high-speed small-hole EDM drilling machine engineered for precision hole machining from φ0.3 to 3.0mm — ideal for mold cooling channels, wire thread holes and production drilling.
One-Click Processing & Auto Knife Lift
One-touch cycle start with intelligent depth control cuts setup time and delivers uniform, repeatable holes on every part.
V3 Discharge Control
Purpose-built V3 discharge controller provides rock-steady pulse output and supports both single- and multi-voltage operation across diverse materials.
W-Axis Electric Lift
Motorized Z-column with one-key origin return and position memory — fast positioning plus automatic retraction for chip clearing.
3-Axis LCD Display
Live X/Y/Z readout on a dimmable display, with power-off memory so your parameters survive every power cycle.
Quick-Change Chuck
Rapid-change wedge chuck locks φ0.3–3.0 mm copper tubes securely for fast, tool-free electrode swaps.
Auto Voltage Regulation
Intelligent voltage matching auto-adjusts to workpiece thickness and material, ensuring clean arc start and stable drilling.
30A High-Speed Processing
30 A high-current output drives reliable penetration through hardened steels and difficult alloys.
High-Pressure Ceramic Pump
Hard-wearing ceramic pump delivers consistent high-pressure flushing for clean holes and efficient chip evacuation.
DD703-400 Full Specifications
Machine specifications verified per the Miyang 2026 Product Catalog. Standard configuration shown; contact us for customization.
| Specification | DD703-400 |
|---|---|
| X/Y Stroke (mm) | 400 × 300 |
| Machining Aperture (mm) | φ0.3 – 3.0 |
| Max Workpiece Load (kg) | 300 |
| Spindle Servo Stroke (mm) | 390 |
| 2nd Stroke Z2 (mm) | 300 |
| Max Workpiece Height (mm) | 300 |
| Max Spindle Speed (rpm) | 1,200 |
| Max Output Power (kW) | 4.2 |
| Max Processing Current (A) | 30 |
| Max Operating Pressure (MPa) | 7 |
| Guide Rail Type | Linear Rail |
| Machine Body Material | Steel Structure |
| Control System | V3 |
| Lead Screw | Ball Lead Screw |
| Drive Motor | Hybrid Motor |
| Rotary Head | Tungsten Steel Rotary Pump |
| Water Pump | Ceramic Plunger Pump |
| Machine Weight (kg) | 650 |
Built for High-Speed Precision Drilling
One-Click Processing & Auto Knife Lift
Start the cycle with a single button; the auto knife-lift retracts to clear chips and maintains continuous, unattended drilling.
V3 Control System
Stable, controlled pulse output tuned for high-speed small-hole EDM, delivering clean, consistent hole geometry.
W-Axis Electric Lift
One-key origin return and position memory speed up re-positioning and guarantee repeatable depth every cycle.
3-Axis LCD Display
Dimmable backlit readout with power-off memory — recall proven parameters instantly, even after shutdown.
Wrench Chuck System
Fast, tool-free electrode changes with secure clamping across the φ0.3–3.0 mm tube range.
Ceramic Plunger Pump
Reliable high-pressure flushing keeps holes clean and electrodes cool for longer, more consistent runs.
Where the DD703-400 Excels
Mold Cooling Channels
Deep, precise cooling-line holes in injection and die-cast molds for uniform thermal control and faster cycles.
Wire Thread Holes
Accurate start holes for wire-cut EDM — clean entry with minimal taper, ready for instant threading.
Hydraulic & Pneumatic Valves
Precise orifice, spool and port holes in hardened valve bodies and hydraulic components.
Nozzles & Micro-Orifices
Repeatable small-diameter holes in nozzles, filters and precision micro components.
Aerospace & Turbine
Cooling and bleed holes drilled in superalloys, turbine blades and high-temperature components.
Fasteners & Inserts
Quick, burr-free clearance holes for screws, inserts and pins in hardened tool steel.