Locating Multiple Bore Diameters Via Hobbing

The article "Locating Multiple Bore Diameters Via Hobbing" appeared in the November/December 2016 issue of Gear Technology.

Summary
Attached photos (Figs. 1-2) show a bushing to locate one single bore. This will be used to locate one single bore diameter of a gear wheel. What is (the latest) technology for common clamping a bushing to locate multiple bore diameters in hobbing?

Keywords
workholding, hobbing

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