METHOD FOR INSPECTION OF BALLS Russian patent published in 1994 - IPC

FIELD: testing equipment. SUBSTANCE: ball is installed between three supports one of which has internal surface in the form of two coaxial truncated cones rigidly interconnected by their bases, while second and third supports have the shape of toroidal rollers with generatrix radii exceeding the maximum radius of the ball. Second and third supports are installed in the plane parallel to the turning axis of the first support, perpendicularly to it and symmetrically to ball center. Ball is inspected by rotating first and second supports around their axes at speeds differing in magnitude and direction. EFFECT: higher efficiency and accuracy of measurement due to uniform application of forces to the ball. 3 dwg