Sinker EDM’s Power Supply Enables Exotic Material Machining

MC Machinery Systems, Inc. offers its EA12PS sinker EDM, designed with a fixed-table traveling column and intended for medium-sized sinker machining applications. As in other PS-series EDMs, the EA12PS’s Z-axis design uses high-quality ballscrew and LM way components, which promote positioning accuracy during high-speed jump machining. The new jump speeds are 25 m/min. (984 ipm) with 1.6 G acceleration. The AC Smart Servo System provides 0.05-micron motor resolution with the same resolution in the absolute feedback linear scales on all axes. The EDM is equipped with a three-sided drip tank for easy operator access, which can be set up just below the table surface with fluid circulation to better control thermal stability during job setup.

The machine’s M700 Mitsubishi Advance CNC is said to improve performance with the Fuzzy-Logic control. Fuzzy-Pro 3 Plus provides enhanced machining performance with Optimum High-Speed Jump and Expert Rib machining settings to improve no-flush machining conditions, the company says.

Intelligent Digital Power Master (IDPM) Adaptive Control (part of the FP80PS power supply) uses a detecting discharge pulse to reduce abnormal discharges, in turn reducing graphite electrode wear by as much as 40 percent, the company says. The power supply also features the High Power System (HPS) circuit for machining exotic materials such as synthetic polycrystalline diamond (PCD) and cubic boron nitride (cBN). It also reduces copper electrode wear when machining tungsten carbide, the company says.