Patent ID: 6112396
Filing Date: 2000-09-05
Classification: B23P,B25B,F16B,Y10S,Y10T

Abstract:
A method for establishing a clamping force between bolted parts, said method including the steps of:selecting an elongated fastener having a stress generator and a connector at opposite ends of a shank portion;selecting jackbolts having threaded shanks between torque receiving ends and opposite compressively stressable ends, said compressively stressable ends each having a protruding central area along a longitudinal axis of each jackbolt for reducing bearing friction and preventing fretting under compressive stress, said jackbolts having a preselected elastic characteristics to allow elastic flattening of the protruding central area at said compressively stressable ends; andtorquing said jackbolts in threaded openings spaced about an outer peripheral part of said stress generator sufficient to produce elastic flattening of said compressively stressable ends and stress said shank portion for establishing a clamping force between such bolted parts.