Method for sizing a lock nut

B - Operations – Transporting – 21 – K

Patent

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Details

B21K 1/70 (2006.01) F16B 39/282 (2006.01) F16B 39/284 (2006.01) F16B 39/38 (2006.01)

Patent

CA 2199343

A method for making a lock nut engagable and retainable about a threaded shaft wherein a body member having a bore is threaded for receiving a threaded shaft, and at least a portion of the bore is deformed to provide threaded shaft engaging means engagable with a threaded shaft disposed in the bore. The deformed portion of the bore is then sized with a threaded sizing tool that is oversized relative to the deformed portion of the bore and undersized relative to any undeformed portion of the bore to provide a sized lock nut with a relatively consistent torque performance and a reduced statistical spread over several installation and removal cycles of the nut about the threaded shaft.

Méthode pour qu'un écrou de blocage puisse s'engager autour d'un axe fileté et y être retenu. Un élément de corps percé d'un trou est taraudé pour recevoir un axe fileté, et au moins une partie du trou est déformée pour fournir un moyen de prise à l'axe fileté placé dans le trou. La partie déformée du trou est ensuite mise à dimensions au moyen d'un calibreur fileté qui est surdimensionné par rapport à la partie déformée du trou et sous-dimensionné par rapport à toute partie non déformée du trou, de manière à obtenir un écrou de blocage mis à dimensions qui a une force de serrage relativement constante et un étalement statistique réduit sur plusieurs cycles de pose et d'enlèvement de l'écrou autour de l'axe fileté.

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