Knuckle formed from pivot pin and kidney core and isolated...

B - Operations – Transporting – 61 – G

Patent

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Details

B61G 3/04 (2006.01) B22C 9/02 (2006.01) B22C 9/10 (2006.01)

Patent

CA 2725123

A method for manufacturing a railcar coupler knuckle (16) includes providing cope and drag mold portions (210, 250) having internal walls defining at least in part perimeter boundaries of a knuckle mold cavity; positioning a first internal core within either the cope mold (210) or the drag mold (250) portions, the first internal core configured to define a kidney cavity (12) and a pivot pin hub (10) as a single void within the knuckle; positioning a second internal core within either the cope mold portion (210) and the drag mold portion (250), the second internal core configured to define a finger cavity (14); closing the cope and drag mold portions (210, 250) with the two internal cores therebetween; and at least partially filling the mold cavity with a molten alloy, the molten alloy solidifying after filling to form the knuckle, wherein the first internal core defines the kidney cavity (12) and the pivot pin hub (10) of the coupler knuckle, and wherein the second internal core defines the finger cavity (14) of the knuckle.

Un procédé de fabrication dune mâchoire dattelage de wagon (16) comprend lutilisation de parties de dessus et de dessous de moule (210, 250) comportant des parois internes délimitant au moins en partie des frontières périphériques dune cavité de moule de mâchoire ; le positionnement dun premier noyau interne dans la partie de dessus de moule (210) ou dans la partie de dessous de moule (250), le premier noyau interne étant conçu pour délimiter une cavité réniforme (12) et un moyeu daxe de pivotement (10) comme vide unique dans la mâchoire ; le positionnement dun second noyau interne dans la partie de dessus de moule (210) ou dans la partie de dessous de moule (250), le second noyau interne étant conçu pour délimiter une cavité digitiforme (14) ; la fermeture des parties de dessus et de dessous de moule (210, 250) avec les deux noyaux internes entre elles ; et le remplissage au partiel de la cavité de moule avec un alliage en fusion, lalliage en fusion se solidifiant après remplissage afin de former la mâchoire. Le premier noyau interne délimite la cavité réniforme (12) et le moyeu daxe de pivotement (10) de la mâchoire dattelage, et le second noyau interne délimite la cavité digitiforme (14) de la mâchoire.

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