The EDAF3 ram-type EDM machine on show and its smaller counterpart, EDAF2, have a rigid structure and precise performance, with integral thermal cooling of the Y- and Z-axis cast components to ensure long-term accuracy. Table size is 700 by 500 mm and the dielectric reservoir is built in to the base casting to improve thermal stability and minimise the machine’s footprint. A fluid cooling unit maintains the dielectric at a constant temperature, while ram temperature control and a high precision, C-axis head are additional features.
Access to the working area is unrestricted, due to a programmable, three-sided drop-tank system. Unattended machining is extended by automatic electrode change and automated workpiece delivery and removal options. Electrodes weighing up to 75 kg may be used.
Featuring the new Hyper-i control system, also new is the on-board programming system, Makino Program Generator, designed to simplify control use, while generating aggressive machining programs. ArcFree technology is standard on EDAF-series machines, while High Quality Surface Finish technology supports more consistent discharging and spark diffusion. A new power-saving mode automatically activates at the end of machining, reducing power consumption while idle by 70%.
Optional performance enhancing features include Makino’s Z-axis stabiliser technology involving liquid cooling of the Z-axis ballscrew and nut, allowing cavity floor surface blending to within one micron. A further option is a fine-hole configuration for precision machining of details smaller than the eye can see.
Makino’s most technologically advanced wire-cut machines, the U3 and U6 (pictured, above), will be presented for the first time in the UK. Designed for ease of operation, versatility and low operating cost, the machines are said to be the next-generation solution for improved profitability in wire EDM processes.
The U6 will be on the stand, offering X-, Y- and Z-axis travels of 650, 450 and 420 mm, respectively. Workpieces up to 1,000 by 800 by 400 mm, with a maximum weight of 1,500 kg, can be accommodated. Other features are reduced wire consumption rates, and the use of 0.1 to 0.3 mm diameter wire with conventional round or split V guides.
With the addition of new HyperCut technology and the Hyper-i control, even novice operators can program and produce top quality components with the most complex geometrical features.
Both the U3 and U6 are available in optional HEAT configuration, featuring Makino’s High Energy Applied Technology, which will be integrated into the machine at the show. It incorporates high pressure, dual digitally- controlled flush pumps and a large capacity, four-step filtration system that together provide even faster machining speeds. HEAT technology is designed to provide unparalleled wire EDM speed and accuracy in parts featuring poor or difficult flushing conditions.
An extensive library optimises cutting using standard hard brass wires, high speed coated wires and high-taper soft wires. A cutting condition library ensures that all workpieces can be machined at an optimally productive level.
U-series wire EDM machines see the entire bed casting used as the dielectric reservoir, reducing footprint and eliminating the need for additional external fluid tanks. Improved mechanical rigidity and thermal stability are offered, while the stationary table design ensures sustainable long-term accuracy. Additionally, work zone access has been simplified for ease of access and maintenance.
A three-pass process developed to produce surface finishes as fine as 3 micron Rz in standard tool steels is supported by Makino’s HyperCut technology. This performance enhancement represents a 20% reduction in cycle time and 14% reduction in wire consumption, compared to the previous technology.
Makino’s Pro-Tech circuit provides electronic galvanic protection to the workpiece to prevent, or at least minimise, rusting and oxidation, preserving the integrity of the part without need of chemicals.
Also on show on this stand is the Mecof range of travelling-column, horizontal- spindle milling machines and gantry-type, vertical-spindle machining centres.
In addition, the Okamoto saddle-type surface grinding machine range will be represented by the 605-by-300-mm table ACC 63 SA model, while Speroni tool presetters and the photo-activated adhesive workholding system Blue Photon will be other technology of interest.
