Tech Talk
What is the importance of "Machine Rigidity" in grinding?
Rigidity of the grinder; the wheel spindle, centres, and dresser will be the mirror image of the part geometry you will receive when using CBN or diamond. Fracturing of the abrasive is continually influencing conventional abrasives, aluminum oxide and silicon carbide. This coupled with the dressing process is camouflaging the true machine rigidity or the lack thereof. Superabrasives (CBN or diamond) are rigid and last a long time between dressing. This makes them an intricate part of the systems rigidity.
To obtain the tight tolerances demanded in today's environment, grinding machine manufacturers are utilizing ball screws and servos, hydrostatic, hybrid hydrostatic spindles along with air bearings, ceramic bearings. The demand is only getting tighter.
