METHOD OF BOLT JOINING OF PARTS Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: parts with openings of different diameters are produced. For multi-row joints, the openings of different diameters are arranged at the first row from the side of action of load. A bushing having the conical side and base is produced. The diameter of the base is equal to the diameter of the large opening of the part to be joined. The bushing has the bearing spherical face. The parts are assembled to obtain a stack. The bushing is inserted into the part having the grater base. The spherical face is positioned from the side of the part having the lesser base. The bolt is mounted. The washer is set on the bolt. The nut is screwed up to the pressing of convex face of the bushing into the surface of the parts to be joined. EFFECT: enhanced reliability. 3 dwg