Die-Sinking EDM

Die-sinking EDM (Electrical Discharge Machining) technology delivers unmatched precision for manufacturing complex geometries in hardened materials. Ellison Technologies offers industry-leading die-sinking EDM machines that provide exceptional accuracy, superior surface finishes, and remarkable flexibility for challenging applications.

Whether you're manufacturing complex molds, precision aerospace components, or intricate medical devices, our comprehensive EDM solutions combine cutting-edge technology with expert implementation support to maximize your manufacturing capabilities. Partner with Ellison Technologies to achieve the precision, reliability, and efficiency your complex manufacturing challenges demand.

As the oldest EDM machine manufacturer in the world, ONA has pioneered EDM technology for over 65 years. With over 15,000 machines installed worldwide, ONA delivers quality Wire-Cut and Die-Sinking EDM in compact and modular configurations fitting a wide range of applications. Additionally, ONA offers customized EDM solutions to fit customer-specific needs.

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Die-Sinking EDM Process Fundamentals

Die-sinking EDM (also known as ram or sinker EDM) is a non-contact thermal machining process that uses electrical discharges (sparks) to precisely remove material from conductive workpieces. The shaped electrode (typically copper or graphite) is machined as a "negative" of the desired cavity shape, then carefully positioned in proximity to the workpiece. Controlled electrical discharges pass through a dielectric fluid, creating microscopic plasma channels that erode the workpiece material with exceptional precision.

This unique material removal process offers several critical advantages:

Ability to machine hardened materials (up to 70 HRC) with no distortion
Creation of complex internal geometries impossible with conventional machining
No mechanical contact between the electrode and workpiece
Virtually stress-free machining process
Extreme precision with tolerances to ±0.0001" (0.0025mm)
Excellent surface finishes to 0.4 Ra (µm) or better
Capability to machine any electrically conductive material regardless of hardness

Modern CNC die-sinking EDM machines feature advanced power supplies, generator technologies, and sophisticated control systems that optimize the electrical discharge process for maximum efficiency, accuracy, and surface quality. These technological advancements have transformed die-sinking EDM from a specialized process into an essential manufacturing technology for precision industries.

Key Benefits of Modern Die-Sinking EDM Technology

Today's advanced die-sinking EDM technology delivers significant benefits for precision manufacturing operations:

Complex Geometry Mastery: Create intricate internal features, deep cavities, and complex 3D shapes that would be impossible with conventional machining methods
Material Independence: Machine any conductive material regardless of hardness (hardened steels, tungsten carbide, exotic alloys) with no cutting forces and minimal distortion
Exceptional Precision: Achieve extraordinary dimensional accuracies with repeatable results, even on the most complex components
Superior Surface Finish: Produce mirror-like surface finishes (down to 0.4 Ra μm) directly from the machining process, often eliminating secondary finishing operations
Automated Operation: Advanced CNC controls allow for unattended machining, maximizing productivity while maintaining consistent quality
Process Consistency: Stable, repeatable results ensure part-to-part consistency critical for high-precision applications
Design Freedom: Remove manufacturing constraints from the design process, allowing engineers to focus on optimal part functionality rather than machining limitations
Reduced Electrode Wear: Modern generator technology minimizes electrode wear, extending electrode life and reducing production costs
Enhanced Productivity: Automated electrode changers, workpiece handling systems, and integrated measurement enable efficient, lights-out operation

The combination of these advantages makes die-sinking EDM an essential technology for manufacturers who produce complex, high-precision components from challenging materials.

Compact IRIS Series

Compact NX Series

Compact QX Series

Double Head IRIST Series

Double Head TQX Series

Modular IRIS Series

Modular QX Series

Die-Sinking EDM Process Fundamentals

Key Benefits of Modern Die-Sinking EDM Technology