Patent ID: 9016269
Filing Date: 2015-04-28
Classification: B24D,B28D

Abstract:
1. An outer blade cutting wheel comprising a base in the form of an annular thin disc of cemented carbide having a Young's modulus of 450 to 700 GPa, having an outer diameter of 80 to 200 mm defining an outer periphery, an inner diameter of 30 to 80 mm, and a thickness of 0.1 to 1.0 mm, and a blade section disposed on the outer periphery of the base and having a greater thickness than the base, said blade section comprising abrasive grains and a metal or alloy bond, the metal or alloy bond being deposited on the outer periphery of the base by electroplating or electroless plating for bonding abrasive grains together and to the base, wherein said abrasive grains are diamond and/or cBN abrasive grains having an average grain size of 45 to 310 μm and a toughness index TI of at least 150, said blade section includes overlay portions which each protrude outward beyond the thickness of said base, the thickness of the overlay portion of said blade section has a tolerance [(T wherein T 3 max and T 3 min are maximum and minimum values of the thickness of the overlay portion throughout the circumference of the blade section, T 2 max is a maximum value of the thickness of the blade section throughout the circumference of the blade section, and said blade section has a roundness [(OD wherein OD max and OD min are maximum and minimum values of the outer diameter of the blade section.