B - Operations – Transporting – 23 – Q
Patent
B - Operations, Transporting
23
Q
B23Q 3/14 (2006.01) B21C 45/00 (2006.01) B21F 5/00 (2006.01) B21G 3/12 (2006.01) B21K 1/60 (2006.01)
Patent
CA 2129192
A metal rod (20) having a conical or pyramidal cut extremity (20a) is used to make a mandrel for blind rivets. The rod is held in place between a pair of die segments (11) such that its end (26) of a preset length including the extremity is swageable and protrudes from an upper surface (14) of the segments. Subsequently, the swageable end (26) is axially compressed to form a mandrel head (27) by a punch (12) which has a lower face (17) in parallel with the upper surface (14) of the segments and a conical or pyramidal recess (18) fittable on the extremity. Thus, a free intermediate portion of the swageable end (26) compressed by the punch (12) swells radially to form the head (27) having a flat flange (31) from which the extremity protrudes as a lug (32) upwardly and centrally. The mandrel, which has the head formed uniform without any eccentricity about the axis of a mandrel body, can now be produced inexpensively using the nail manufacturing apparatus, as in the prior art method.
Tige de métal (20) à pointe (20a) conique ou pyramidale destinée à servir de mandrin pour la pose de rivets aveugles. La tige est placée entre les deux segments d'une matrice (11) de manière qu'un bout (26) de longueur déterminée, y compris la pointe, dépasse la face supérieure (14) de la matrice. Ce bout (26) est ensuite soumis à l'action d'un poinçon (12) dont la face inférieure (17) est parallèle à la face supérieure (14) de la matrice et présente une cavité (18) conique ou pyramidale correspondant à la pointe de la tige. Ainsi, la partie saillante de la tige (26) sous la pointe, comprimée axialement par le poinçon (12), s'étend radialement et forme une tête (27) à pourtour plat (31), au centre de laquelle émerge la pointe. Ce mandrin à tête uniforme et centrée autour de l'axe du corps peut être produit à peu de frais au moyen d'un procédé connu de fabrication de clous.
Kirby Eades Gale Baker
Yugenkaisha Shinjo Seisakusho
LandOfFree
A method of making a mandrel for blind rivets does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with A method of making a mandrel for blind rivets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A method of making a mandrel for blind rivets will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2033102