Die for driving pierce nut

Disclosed is a die assembly for driving a pierce nut which comprises an annular coining portion (2) provided on the top of a die body (1) in such a way as to have its inner surface continuous to the center aperture (3), and an annular projection (4) provided on the upper portion of the center apertu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	KAZINO, HIROSHI
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING COMBINED OPERATIONS DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS FORGE FURNACES FORGING GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HAMMERING HEATING LIGHTING MACHINE TOOLS MECHANICAL ENGINEERING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METAL-WORKING NOT OTHERWISE PROVIDED FOR OTHER WORKING OF METAL PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING THERMAL INSULATION IN GENERAL TRANSPORTING UNIVERSAL MACHINE TOOLS WEAPONS WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	Disclosed is a die assembly for driving a pierce nut which comprises an annular coining portion (2) provided on the top of a die body (1) in such a way as to have its inner surface continuous to the center aperture (3), and an annular projection (4) provided on the upper portion of the center aperture (3) for surely and temporarily holding punched debris into the center aperture. It is therefore possible to provide an inexpensive nut-driving die assembly with an improved durability which can prevents debris, punched by shearing between a pierce nut and a metal panel and remaining at the upper portion of the center aperture, from being lifted up when the metal panel is lifted from the die body (1), thereby ensuring a continuous driving work.