Oct 26, 2018· Being a tool and die shop I do a lot of surface grinding of tool steels and carbide, mostly with CBN and diamond wheels. I have tried various ways to derss the wheels and found that a brake dresser is the way to go for truing.
Careful wheel mounting is essential when grinding with a Diamond or CBN wheel. For best performance, the Wheel should be mounted perfectly Normal and concentric to the machine spindle. Out-of roundness is not a major problem with cup and face wheels. Straight diamond wheels such As Type 1A1 usually require truing after mounting.
Same with diamond wheels. You'd be essentially grinding the OD of your grinding wheel. You're also going to be grinding the wheel of the truing device, so its a battle, and both lose some OD, but eventually the diamond wheel is trued. I've seen hand-held grinders used for truing and shaping diamond wheels as well as table-mounted.
Dressing or Truing: What’s the Difference? Diamond and CBN wheels can't be cut, and instead are effectively ground to size. While this can be done by traversing a conventional grinding wheel or sintered diamond roller across the wheel face, many machinists prefer to use a brake-controlled truing device (BCTD.) so dressing always
The grinding wheel does not cut as freely, thereby producing more heat in the grind zone. More important, the profile of the grinding wheel wears so that the geometry and precision of the workpiece suffers. Haas uses a silicon carbide or corundum wheel as the dressing tool for its tapered diamond grinding wheels.