ABRASIVES
The Radiac Genis wheel demonstrated 60% better wheel life than standard vitrified CBN wheels when tested on a Schaudt Zeus grinding 52 Rockwell camshafts.
Maybe it’s Time to Try Some ‘Swiss Cheese’
When the grinding gets tough it’s the bond and not necessarily the grain that matters
Ed Sinkora Contributing Editor
T
hese days the most important theme in superabrasive grinding wheel development isn’t the abrasive, it’s the bond. The diamond or CBN grains do the cutting, but the bond plays a decisive role in exposing the grains to the workpiece and enabling coolant to remove heat. Without exposed grains the wheel won’t cut. And without porosity in the bond, coolant won’t be able to flush away material with the heat that would otherwise damage the workpiece, not to mention the wheel. So while no one seems to be touting new superabrasives, all the high-tech players are experimenting with new, open bonds.
The Master in ID grinding Perhaps the clearest example of a recent improvement in bond technology is Meister’s 3D Abrasives Technology. You’ll excuse the pun, but Meister (North Kingstown, RI) was already
November 2016 |
AdvancedManufacturing.org 61
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