Wire electrical discharge machine DK7720

precisionfor micro-machiningfor small workpieces

Overview
The DK7720 is a compact CNC wire-cut electrical discharge machining (EDM) center engineered for high-precision machining of small-scale components. With a 270×420 mm table and 200×250 mm travel, it is suited to fine-detail shaping for molds, punches, dies and complex 2D profiles.

Main specifications

• Worktable size: 270×420 mm
• Worktable travel: 200×250 mm
• Max. workpiece height: 200 mm

Series
DK77 Series

Key Features

• Compact 270×420 mm Table — fits small-to-medium precision parts while optimizing floor space.
• Stable Travel (200×250 mm) — precise axis control for micro-slotting, corner definition and profile outlines.
• Max Workpiece Height 200 mm — enables machining of mold inserts, cavity forms and conductive prototypes.
• High-Precision Servo Drive System — maintains smooth axis movement and tight path tolerance on complex geometries.
• Low-Wear Brass Wire System — reduces wire wear and improves edge finish consistency.

Recommended Configurations

• Water-cooled dielectric tank to improve spark control and cut quality
• Automatic wire threading to reduce setup time for batch runs
• Workpiece clamp set for securing thin or irregular parts
• Digital MPG handwheel for fine manual positioning and inspection moves
• Filtration system to maintain dielectric purity for fine finishes

Application Case

• Client: Micro mold manufacturer — Switzerland
• Use case: Cutting injection mold inserts for high-tolerance plastic connectors
• Setup example: DK7720 with fine wire, water-cooled tank and programmable threading
• Feedback: Surprisingly accurate for such a compact EDM platform

Product Specifications
Technical specification table not provided on page.

Technical details

• Model: DK7720
• Series: DK77
• Worktable size: 270 × 420 mm
• Table travel: 200 × 250 mm
• Maximum workpiece height: 200 mm
• Drive: High-precision servo drive system
• Wire: Low-wear brass wire system (recommended)
• Recommended options: water-cooled dielectric tank, automatic wire threading, workpiece clamp set, digital MPG handwheel, filtration system