Double Disc Grinding

The double disc grinding process consists of 2 opposing abrasive wheels that will grind 2 sides of a part, simultaneously taking off equal amounts of material on both sides. Accuracies obtained are, to a large extent, application-dependent. Typically, however, double-disc grinding can hold tolerances to +-.010 microns Flatness and parallelism to .010 microns, while achieving surface finishes as fine as 5 rms with conventional abrasive discs. (Polishing discs typically produce surfaces of 1 to 2 rms.) The ability to achieve tight tolerances often eliminates the need for lapping or polishing work, fine grind work and secondary inspections. It also reduces part handling, scrap and rework.