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128 MMS December 2017 mmsonline.com MODERN EQUIPMENT REVIEW Spotlight: EDM Northfield Precision Instrument produces custom, submersible chucks for use in wire EDM environ- ments. The chucks have non-stainless steel wetted components and are coated with a thin, dense layer of hard chrome for protection against cor- rosion. The company guarantees accuracies of 0.001" to 0.00001" (0.0254 to 0.000254 mm). Through-hole, high-speed and quick-change air chucks are also available for lathes, boring machines, grinders and VMCs in sizes from 3" to 18" (76 to 457 mm). Northfield Precision Instrument Corp., call 516-431-1112 or visit northfield.com. CUSTOM SUBMERSIBLE CHUCKS FOR WIRE EDM offer as many as eight fully programmable axes, facilitating complex manufacturing applications. Rotating brass or copper tubular electrodes from 0.1 to 3.0 mm (0.004" to 0.118") in diameter perform drilling, while a high-pressure pump provides adjustable through-spindle flushing as high as 750 psi to maximize performance. A 17" touchscreen display enables operators to manually enter drilling positions or import them from an external DXF or wire EDM program file via USB or TCP/IP. The built-in supply module for the dielectric system is designed to save space and simplify maintenance. Dielectric fluid is filtered from 3 to 20 microns via a standard, replaceable paper filter cartridge. An Ion quality sensor and mixed-bed Ion exchange resin monitors clean water to maintain conductivity. The ma ximum workpiece weight is 1,100 lbs. The machines support a range of rotary table manufacturers, as well as tilting-head (±45 degrees) and multi- lingual operations. The YGS ZNC series includes high-speed EDM drills that perform simple start-hole drilling quickly and efficiently with electrodes in diameters DRILLING EDMS PROVIDE STABILITY FOR SMOOTH MACHINING Absolute Machine Tools has introduced the Yougar YGS CNC Moving Head and YGS ZNC Manual series of drilling EDMs. The YGS CNC Moving Head is designed to provide smooth motion and more stability than fixed-head, moving-table EDM drills. An automatic guide changer enables long, unattended opera- tions and automatic hole drilling. The machines