2528 トルクを用いたボルト・ナット締結体の締付け力検出法

概要

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The method to accurately detect the clamping force of bolted joint after tightening has been proposed by the authors. In this study, a new method to easily detect a clamping force due to measuring variation of torque is proposed. In the proposed method, internal threads engage with the bolt threads protruded through the nut at first. Then the bolt threads are pulled by rotating the internal screw. During this process, the upper surface of nut is pressed to the opposite direction and the variation of torque supply to the internal screw is measured. At the moment, when the pulling force reaches the clamping force of the bolted joint, the relationship between torque and displacement at the pulling point varies drastically. The clamping force of a pre-tightened bolted joint was detected experimentally by the proposed method. It is shown that the error of the present method was estimated to be less than about±10%.
一般社団法人日本機械学会の論文
2003-08-05