Pierce nut installation apparatus

B - Operations – Transporting – 23 – P

Patent

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Details

B23P 19/06 (2006.01) F16B 37/06 (2006.01)

Patent

CA 2528650

A pierce nut installation apparatus (20) having a feed passage (44), a plunger passage (52) and a plunger (46) which reciprocates through the plunger passage (52) to engage and install a pierce nut (56) in a panel (58) opposite the plunger passage (52), wherein the end of the plunger passage includes a nut guide element (68) projecting from the end of the plunger (46) including a frustoconical outer surface having a major diameter adjacent the end face of the plunger substantially equal to the crest diameter of the pierce nut bore which accurately locates the pierce nut (56) on a panel (58) and prevents cocking of the pierce nut (56) in the plunger passage (52).

La présente invention concerne une presse à poser les écrous perforants (20) comportant un passage d'alimentation (44), un passage de piston (52) et un piston (46) en va-et-vient dans ce passage (52) de façon à agir contre un écrou perforant (56) pour le poser dans un panneau (58) en face du passage de piston (52). En l'occurrence, le passage de piston comporte, dépassant de l'extrémité du piston (46), un guide-écrou (68) de surface extérieure tronconique. Son grand diamètre, qui fait suite à l'extrémité du piston, est sensiblement égal au diamètre de la ligne sommitale du perçage de l'écrou perforant. Ce guide-écrou, qui permet de positionner avec précision l'écrou perforant (56) sur un panneau (58), empêche l'écrou perforant (56) de se coincer dans le passage du piston (52).

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