Inventio Ag

Markus Israel

Michael Matheisl

Thomas Novacek

Reinhard Mauermann

Andreas Trojer

Thomas Illedits

David Krampl

Richard Schütz

A clinching tool () for producing a load-bearing, supporting or stable connection of a first metal workpiece () with a second metal workpiece (). The clinching tool () comprises a die tool () and a counter-tool () which together form and join, by local plastic reshaping or deformation of the metal workpieces (), a clinch connection () which connects or permanently joins the first metal workpiece () and the second metal workpiece (). The die tool () comprises a die having a flank () arranged concentrically with respect to the rotational axis (). The flank () has a front end surface () perpendicular to the rotational axis (). The flank () is conically shaped at least in the lower transition region () to the front end surface () and has a flank angle (W, W, W) smaller than or equal to 10 degrees, preferably smaller than or equal to 5 degrees.

Method and tool for clinching thick plates and use of the tool or of the clinching apparatus or of the clinching appliance

A method of producing a load-bearing steel construction connection, wherein a clinch connection () connecting a first metal workpiece () with a second metal workpiece () is formed by local deformation by means of a die tool () and a counter-tool (). In that case initially the first metal workpiece () and the second metal workpiece () are placed one on the other on a processing surface of the counter-tool and aligned. The die of the die tool is then advanced and sunk into the two metal workpieces () placed one on the other until the clinch connection () has been formed by plastic deformation. The first metal workpiece () has a first workpiece thickness (t) and the second metal workpiece () has a second workpiece thickness (t), which together give a total workpiece thickness (tt) which is thicker than 8 millimeters. The die is designed to be rotationally symmetrical with respect to its rotational axis () and has a conically shaped transition region () narrowing at an angle (W, W, W) in the direction of sinking-in of the die.

Method for clinching thick metal workpieces, use of a clinching tool, and steel structural element produced accordingly

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Dresden, Germany

Markus Israel