Push-type rivetless nut plate and method and apparatus for...

B - Operations – Transporting – 21 – D

Patent

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Details

B21D 39/14 (2006.01) B21D 39/16 (2006.01) B21D 39/20 (2006.01) B21J 15/34 (2006.01)

Patent

CA 2576349

A rivetless nut plate has a nut, a holding bracket, a member and a nut retainer. The nut is provided with an aperture therethrough and is secured within a bracket portion of the holding bracket by the retainer but also is permitted limited movement within the bracket portion. The holding bracket further includes a tubular portion having inner and outer walls. The inner wall is tapered such that the member is positioned against the inner wall. Upon an axial force being applied to the member through the aperture of the nut, the member is pushed through the tubular portion from the first end to the second end in order to expand the inner wall and force the outer wall into engagement with the wall of the workpiece. A tool is provided to push the member through the tubular member and can be incorporated into either a manual or automatic process.

L'invention concerne un écrou à sertir sans rivet, qui comporte un écrou, un support de fixation, un élément et un élément de retenue d'écrou. L'écrou, qui comprend une ouverture traversante, est fixé par l'élément de retenue dans une partie support du support de fixation, mais peut être déplacé de façon limitée dans ladite partie. Le support de fixation comprend une partie tubulaire qui comporte des parois intérieure et extérieure. La paroi intérieure est conique, de sorte qu'on peut positionner l'élément contre celle-ci. Lorsqu'une force axiale est appliquée sur l'élément par l'ouverture de l'écrou, ledit élément est poussé à travers la partie tubulaire, de la première extrémité vers la seconde extrémité, de manière à élargir la paroi intérieure et à forcer la paroi extérieure à entrer en prise avec celle de la pièce à travailler. Un outil également prévu servant à pousser l'élément à travers l'élément tubulaire peut être intégré dans un procédé manuel ou automatique.

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