in the fi eld on which I’ve seen roundness of 0.6 µm—dead round crankshafts that are fi nished in 2–3 minutes. We took the same concept and threw away all the ancient mechanical implementation and synched the axes together to achieve high speed and quality on gears,” said Terry. Toyoda’s GS300H5 Gear Skiving Center features a high-


speed rotation workpiece C axis made more compact with a built-in motor while supporting automatic hydraulic fi xtures. The newly developed TOYOPUC-GC70 control technology displays content of NC programs by using an intuitive pro- prietary fl ow-chart-style menu and simplifi es inputting gear data, tool data and cutting conditions shown on the screen. Gear tooth geometry can be readily programmed with


Toyoda’s conversational control while all other processes can be programmed using CAM software like Esprit or Master- cam. “I can machine a gear from 30 to 300 mm on one piece of equipment which is dramatically more fl exible than most hobs that I’ve seen, eliminating the need to have a number of different hobs to handle a family of gears,” said Terry.


Entry Level Five-Axis Machine Debuts


At IMTS, Hermle Machine Co. (Franklin, WI) introduced its entry-level C 250 fi ve-axis machining center to the US market, joining its successful C 400 model that has been delivering precision fi ve-axis machining since 2012. Both the C 250 and C 400 machining centers are designed to offer an affordable way for job shops and contract manu- facturers serving the aerospace, medical, die/mold, and general engineering market to enter the fi ve-axis machin- ing capabilities.


“Hermle is a high-end machine tool builder,” said Gunther Schnitzer, vice president sales and engineering. “The C250 fi ve-axis model allows us to offer an entry-level fi ve-axis machining center to job shops with a lot of options integrated into the machine achieving an overall favor- able return on investment.” Both the C 250 and C 400 are capable of machining superalloys, titanium, Inconel, and other nickel-based alloys, as well as high-speed machining of aluminum.


January 2017 | AdvancedManufacturing.org 79


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