ゆるみ防止機能を有するトルクメイトの開発(機械要素,潤滑,工作,生産管理など)

概要

論文の詳細を見る
Bolted joints are widely used to assemble various parts in both machines and mechanical structures since the disassembly for maintenance is easy with low cost. However, vibration induced loosing due to dynamic loading has been an unsolved problem for a long time. We have developed a new type of nut named "Torque Mate", which realizes anti-loosening performance without complicated tightening process and tool. In this research, we have investigated the mechanisms of bolted joint with Torque Mate, and tightening behavior is analyzed by mean of three-dimensional finite element method and experimental investigation. The results are compared with the experimental results. Good qualitative agreement is observed between the analytical results and the experiments with respect to tightening force and tightening torque. We found some new aspects and superior points for bolted-joint with Torque Mate than that of standard nuts. It is found that tightening torque of Torque Mate is higher than that of standard. It is also found that the antiloosening performance can be realized by the thread contact force at the angular facing on bearing surface. Moreover, by mean of loosening test and tightening test, it is concluded that Torque Mate involves sufficient anti-loosening performance in practical use.
一般社団法人日本機械学会の論文
2009-04-25