Dual synchronized thread forming method and apparatus

Details Dual synchronized thread forming method and apparatus Dual synchronized thread forming method and apparatus

B - Operations, Transporting

23

G

B23G 5/00 (2006.01) B23B 27/00 (2006.01) B23B 27/06 (2006.01) B23G 5/04 (2006.01) B23G 5/06 (2006.01)

Patent

CA 2191446

Method and apparatus are disclosed for forming dual synchronized threads (24, 26) on the interior and exterior cylindrical portions of a tube or pipe (22), and in the inner and outer cylindrical surfaces of an annular channel formed in an object. The method for producing dual synchronized threads (24, 26) includes cutting or forming first and second sets of threads (24, 26) so that they will be synchronized and their starting points will be in some specified relationship to each other. An apparatus is also disclosed for cutting dual synchronized threads, the apparatus comprising a combination tap and die (30) for simultaneously cutting dual threads on and in an object. The tap threads (38) and die threads (40) of the combination tap and die (30) are synchronized such that their thread leads are identical, and their rotational zero points are related such that the resulting male and female threads on the object are synchronized.

Procédé et appareil de formation de filets doubles à pas correspondants (24, 26), à l'intérieur et à l'extérieur de portions cylindriques d'un tube ou d'un tuyau (22) et dans les surfaces cylindriques interne et externe d'un canal annulaire percé dans un objet. Ledit procédé consiste à tailler ou former les premier et second ensembles de filets (24, 26) de façon à ce qu'ils soient en correspondance et que leurs points de départ respectifs présentent un rapport réciproque spécifié. Ledit appareil comporte une combinaison de tarauds et de filières (30) permettant de tailler simultanément des filets doubles sur un objet et dans celui-ci. Le filet taraudé (38) et le filet (40) produit par filière au moyen de ladite combinaison (30) sont en correspondance en ce sens que leurs pas sont identiques et leurs points de départ de rotation sont en un rapport tel que les pas mâle et femelle formés sur l'objet correspondent.

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