Method and tool for clinching thick sheet metal, and use of...

B - Operations – Transporting – 21 – D

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B21D 39/03 (2006.01)

Patent

CA 2675307

The invention relates to a clinching tool (20) for establishing a load-bearing, or supporting, or stable connection of a first metal workpiece (11) to a second metal workpiece (12). The clinching tool (20) comprises a male die (20) and a female die (30), which together form and join a clinching connection (13) connecting, or permanently connecting, the first metal workpiece (11) to the second metal workpiece (12), via local, plastic deformation or reshaping. The male die (20) has a die having a flank (25) disposed concentrically to the rotational axis (24). The flank (25) has a face surface (23) that is positioned perpendicular to the rotational axis (24). The flank (25) is conically shaped at least in the lower transitional region (21) to the face surface (23) and has a flank angle (W, W1, W2) that is smaller than, or equal to, 10 degrees, preferably smaller than, or equal to, 5 degrees.

Outil de clinchage (20) pour réaliser un assemblage porteur ou encore de soutien ou encore stable d'une première pièce métallique (11) avec une deuxième pièce métallique (12). L'outil de clinchage (20) comprend un outil à poinçon (20) et un contre-outil (30), qui façonnent et réalisent conjointement, par mise en forme ou déformation plastique locale des pièces métalliques (11, 12), un assemblage clinché (13) qui assemble durablement la première pièce métallique (11) à la deuxième pièce métallique (12). L'outil à poinçon (20) présente un poinçon qui possède un flanc (25) qui est disposé concentriquement à l'axe de rotation (24). Le flanc (25) présente une face terminale frontale (23) qui est perpendiculaire à l'axe de rotation (24). Le flanc (25) est réalisé de forme conique au moins dans la région inférieure (21) de transition vers la face terminale frontale (23), et il présente un angle de flanc (W, W1, W2) qui est inférieur ou égal à 10 degrés, de préférence inférieur ou égal à 5 degrés.

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