Makino’s New EDAF Series Sinker EDMs Offer Speed, Reliability, Versatility and New ArcFree Technology

Makino’s latest Ram EDM machinery, the new EDAF series, features a new mechanical design for increased rigidity and reduced thermal distortion, ideal for manufacturers facing uncontrolled thermal environments and long hours of unattended burning. EDAF series machines are also equipped with an improved servo system for rapid response to signals from the spark-gap-monitoring circuits.

The EDAF series features two models, the EDAF2 and EDAF3. The footprint of the EDAF2 and EDAF3 are 53.2 inches by 95.5 inches by 98.4 inches and 59.1 inches by 102.4 inches by 100.8 inches with X-, Y- and Z-axis travels of 13.8 inches, 9.8 inches, 9.8 inches and 17.7 inches, 13.8 inches and 13.8 inches, respectively. The EDAF2 provides worktable dimensions of 21.7 inches by 13.8 inches with a payload of 1,102 lbs, and the EDAF3 offers table dimensions of 27.8 inches by 19.7 inches with a maximum payload of 1,764 lbs.

ArcFree Technology

The EDAF series comes standardly equipped with the most sophisticated spark-gap monitoring and arc-prevention technology available on the market today. Makino’s new ArcFree technology helps prevent destructive DC arcs that typically lead to time-consuming cleanup procedures or scrapped parts. With ArcFree technology, manufacturers can burn any application, fully unattended, worry-free. Even applications with unfavorable electrode/workpiece geometry can easily be started with unusually high current density and relied upon for flawless results.

Enhanced Software Configuration

Also included in the EDAF series is Makino’s new on-board programming system, Makino Program Generator (MPG), designed to make the Makino MGH control more user friendly, while generating more aggressive model plans to meet the demands of shortened lead-times on today’s shop floor. By providing answers to simple prompts, and inputting basic data, even novice operators can generate efficient and safe burn routines. This new program generator also allows for programming of multiple electrodes and multiple burn locations.

Makino’s High-Quality Surface Finish (HQSF) technology provides the EDAF series with improved electrical conductivity for more consistent discharging and spark diffusion. HQSF technology eliminates secondary discharges that waste energy while permitting increased efficiency of the sparks for a superior finish without a loss in metal-removal rates. In addition, the HQSF technology allows for achievable surface-finish capabilities that are 50 percent better than that of conventional achievable surface finishes, regardless of discharge surface area.

Customizable Options

The EDAF series offers several optional configurations perfectly suited for a variety of production and die/mold applications. For jobs involving fine-hole machining, both EDAF machines can be equipped with a fine-hole option for precision machining of details smaller than the eye can see. Additional options include Makino’s Z-Axis Stabilizer technology for liquid cooling of the Z-axis ballscrew and nut, allowing cavity floor surface blending to within 1 micron, and a thermal chamber option for enhanced thermal control and performance.