Sinker Makino EDAF3
The EDAF3 machine expands upon the excellent capability and performance of the EDAF2 by offering larger X/Y/Z strokes to accommodate additional or larger work pieces. The EDAF3 retains the same rigid and precise structure as the EDAF2, and integral thermal cooling of the Y- and Z-axis cast components is utilized for thermal stability and long-term sustained accuracy. The dielectric reservoir is built in to the base casting of the machine to improve thermal stability and also minimize the machine’s footprint.
Work tank access is unrestricted on the EDAF3 with a programmable, three-sided drop-tank system, which simplifies operation, ATC (automatic tool changer) and automation integration for greater unattended machining time. The operator has an outstanding vantage point of the machine during operation and can effortlessly unload, load and set up new jobs with the drop tank in the fully lowered position, which drops below the worktable level. The machine’s stationary worktable design can also be configured to provide additional depth to the work tank with the 50mm (2.0”) and 100mm (4.0”) table-down configuration options. The standard fire extinguisher and U/V sensor systems provide safety, protection and confidence for hours of unattended operation.
The EDAF3 uses the latest Hyper-i control system interface that delivers efficient and productive results while bringing new levels of user-friendly operation to the shop floor. The Hyper-i control contains many intelligent, intuitive and interactive functions that are streamlined to assist the operator in every step of the machining process. It also enables easy access and selection of power settings, such as HyperCut, SuperSpark™ IV and ArcFree technologies, to produce the most accurate results with the fastest-possible cycle time.
• 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.
