はとめ加工の基礎的研究 : 第5報, ペタルフランジを用いた重ね継手の締結特性に及ぼす内縁形状の影響

抄録

The fastening of a lap joint is used in a petal flange with round hole, the shape of the hole edge is transformed round into square as press-fitting force increases. In such a case, reduced to the accuracy and strength of the joint, and an expedient to correct these defects with restrained the hole edge in the jointpiece during fastening. This report provides a comparative study of the fastening characteristics of lap joint with consciously converted to the square hole from the round hole. As a result of investigation, fasten the joint without restraint to be changed an initial shape of the hole edge, thereby the crushing strength is not elevated. But, rotational strength of the joint is fairly improved with that object in view a very useful fastening method.