Makino EDNC6 - Sinker EDM
The EDNC6 machine provides similar high performance as the EDAF-Series, but with larger X/Y/Z strokes and larger work tank. The standard configuration EDNC6 utilizes a three-sided programmable rise-and-fall work tank that positions below the table level and accommodates work piece sizes up to 39” x 29” (1,000mm x 750mm). The EDNC6 is also available in a wide tank version that supports larger-sized parts up to 55” x 35” (1,400mm x 900mm) and utilizes a programmable rise-and-fall front door. All EDNC6 machines permit excellent access to the work zone and stationary worktable for faster workpiece setups and process monitoring, and incorporate the dielectric reservoir into the base casting to improve thermal stability and minimize floor space requirements.
The performance of the EDNC6 is unmatched with its power and flexibility using the intuitive Hyper-i control system that makes effective use of Makino’s advanced HyperCut and SuperSpark™ IV technologies. Hyper-i uses a wide hi-definition touch screen with a graphical interface that improves machine productivity by intelligently streamlining operations so that operators at all skill levels can achieve the most efficient results. The capability and ease of operation of the Hyper-i control is further enhanced with integrated on-board digital manuals, intelligent E-Tech Doctor help functions and e-learning training system that can be quickly accessed for operator convenience. The Hyper-i control contains many useful functions that assist the operator with programming and operation and ensure the selection of the most productive and efficient process.
The EDNC6 is also available with optional features that further enhance productivity. An available integrated ATC (automatic tool changer) system sits external to the work tank, which allows full utilization of the entire machine stroke and work tank without any process limitations. The HS-Rib Z-axis configuration reduces rough machining speeds of small-size electrode details like tooling ribs and provides sustained high-speed jump motions of up to 20m/min with 1.5G acceleration with an integrated core-cooled ballscrew. The achieved performance of the HS-Rib can reduce machining times by up to 60 percent and deliver the same high-speed and high-accuracy machining capabilities found on smaller machines on a larger platform.
Productive solutions
Makino has developed many advanced leading-edge generator technologies that improve productivity and capability. The development of these adaptive control technologies provides enhanced machining speeds while delivering optimum accuracy, uniform surface finish with superior edge and metallurgical quality, destructive DC arc protection and low electrode wear.
• HyperCut: This special generator setting provides improvement to machining speeds without increasing electrode wear or required electrode reduction amount. HyperCut can be used on part details up to 30 amps, and improves machining speeds by up to 30 percent without affecting surface quality.
• SuperSpark™ IV: This family of technologies utilizes dynamic power supply adjustments and jump motion control during the machining process. It enhances automation and unattended operation capabilities by eliminating the need for external flush lines and increases the control’s ability to maintain higher cutting speeds regardless of the application or operator’s experience level. Reduction in rough machining cycle times can be achieved when using SuperSpark™ technology regardless of the shape, size or depth of cavity.
• ArcFree: This set of safety-focused settings virtually eliminates the possibility of the machine developing destructive DC arcs during the course of a burn. ArcFree technology, coupled with Makino’s extremely fast servo control response time, enables safe, unattended burning, even when the current applied to an electrode exceeds its maximum current density. While arc prevention has been a part of all modern sinker EDMs, ArcFree technology is the next advancement in intelligent adaptive controls for prevention of DC arcs.
• Flower pattern: Special conditions were developed to obtain a uniform Ra value surface finish with a large RSm value to improve the performance of mold release for plastic injection tools. The more open structure of the surface finish improves plastic part mold release and tool life while reducing the interval for mold cleaning maintenance.
• HQSF™ (High-Quality Surface Finish): This optional configuration dramatically improves the produced surface finish of tool steels using copper or graphite electrodes. The technology was specifically designed to eliminate post-machine polishing and produce superior metallurgical results that extend tool life. Makino’s HQSF process uses a special µSC powder additive that is mixed in the dielectric oil that enhances the stability and even disbursement of the machining spark energy. HQSF can also provide cycle time reductions when not machining to ultra-fine surface finishes.
• EDcam™ software: Makino has developed an off-line programming system for Ram EDM that makes use of the electrode and work piece CAD model information. The system eliminates the requirement of having to create paper process sheets for manual data entry of the programs on the machine control, which invite critical human errors. By intelligently utilizing available electronic data, the EDcam software brings the Ram EDM process into the 21st century and provides a means of program simulation and verification without the need for time-consuming, on-machine, dry-run operations.
• Remote machine monitoring: As part of efficient unattended machine operation, operators and supervisors alike may wish to monitor the machining progress while away from the machine. Makino offers two software options that provide a means of process updates. The EDM mail option enables the machine to generate e-mail text-based messages on any alarm/stop status or by timed intervals. The EDM viewer option provides direct viewing of the machine control interface on a remote PC.
