Modern Machine Shop

SEP 2018

Modern Machine Shop is focused on all aspects of metalworking technology - Providing the new product technologies; process solutions; supplier listings; business management; networking; and event information that companies need to be competitive.

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MMS SEPTEMBER 2018 190 mmsonline.com IMTS 2018 Products On Display Five-Axis Series Targets Tooling, Optics Mitsui Seiki (USA)'s Vertex Hybrid G series of five-axis VMCs (models 55-5X, 75-5X and 100-5X) offer high speed, lights-out milling and grinding of die and mold, optical and tooling components. The machines are capable of 0.0003" (7.5 microns) precision in 3+2 or simultaneous five-axis machining, and their main spin- dles rotate as fast as 25,000 rpm. Air spindles enabling speeds ranging from 40,000 to 90,000 rpm can be changed via the automatic tool changer. FANUC 3D volumetric compensation features enable volumetric calibration according to ISO10320-2 stan- dards and the use of in-process 3D (NIST) traceable measuring capabilities. A part-spinning process pro- duces tangential planetary work spindle alignment, emu- lating the U-axis motion of jig grinding equipment. The machines can employ trochoidal or high speed cutting strategies for tools rotating as fast as 90,000 rpm. Key features include automatic, in-process grinding wheel dressing and size measurement and wheel cali- bration. Acoustic emission sensors and software-guided application strategies monitor milling and grinding pro- cess finishes. The VMCs feature cast iron beds and a solid "box- in-box" design that contribute to rigidity, stiffness and agility. Positioning accuracy is 0.001 mm (0.000040") in the X, Y, and Z axes, ±6 arcseconds in the A axis and ±4 arcseconds in the C axis. Hand-scraped guideways contribute to precision. A thermal-compensation system facilitates size consis- tency, and glass scales provide a minimum resolution of 0.001 mm. | Mitsui Seiki (USA) Inc. | South, Level 3, Booth 338519

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