F - Mech Eng,Light,Heat,Weapons – 16 – B
Patent
F - Mech Eng,Light,Heat,Weapons
16
B
F16B 33/02 (2006.01) B23G 1/50 (2006.01)
Patent
CA 2484612
The invention relates to a method in the formation of threads of a thread- provided element intended to be included as one of two thread-provided parts in a bolted joint. The bolted joint comprises a part (2) having an internal thread and a part (1) having an external thread, and the threads of the respective parts are initially formed according to the ISO and/or Unified basic profile having an initial play in both the radial and axial direction, when said parts are tightened together. The invention is characterized in that the threads of said thread-provided element are formed so that an additional play ( Sa) between said two thread-provided parts is obtained in the axial direction, at the same time as said initial play in radial direction remains substantially unaltered, the part of the bolted joint which consists of the thread-provided element no longer having ISO/Unified basic profile. The invention also relates to a method for the manufacture of threads, as well as corresponding thread-provided element and bolted joint.
L'invention porte sur un procédé d'usinage des filets d'un élément fileté formant l'une des deux pièces filetées d'un assemblage par vissage. Un tel assemblage comporte une pièce (2) filetée intérieurement et une pièce (1) filetée extérieurement. Les filetages sont initialement usinés selon les normes ISO et/ou Filetage unifié, avec un jeu radial et axial initial entre les pièces assemblées. L'invention se caractérise en ce que les filetages desdites pièces sont usinés de manière à ajouter un jeu supplémentaire (Sa) entre pièces dans le sens axial tout en conservant sensiblement inchangé le jeu initial dans le sens radial. Il en résulte un assemblage ne répondant plus aux normes ISO et/ou Filetage unifié. L'invention porte également sur le procédé d'usinage desdits filetages, et sur les éléments filetés et assemblages par vissage correspondants.
Gowling Lafleur Henderson Llp
Verax Engineering Ab
LandOfFree
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