Method for determining the quality of a joint, and control method for a process of joining a plurality of metal sheets by means of a joining device

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United States of America Patent

PATENT NO 11135637
APP PUB NO 20190001392A1
SERIAL NO

16062728

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Abstract

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A method for determining the quality of a joint fabricated in a plurality of metal sheets by a joining device and a control method. The joining device comprises a drive element, and a hold-down device The method may have the following steps: moving the drive element to move the punch and, via at least one first and one second spring, the hold-down device; recording of a force applied by the drive element with a first sensor and of a distance covered by the drive element with a second sensor during a movement of the drive element in a mating direction and opposite thereto as a force/displacement curve; and comparing a linear relief range in the recorded curve with a reference curve.

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Patent Owner(s)

  • BÖLLHOFF VERBINDUNGSTECHNIK GMBH

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Draht, Torsten Schloß Holte-Stukenbrock, DE 31 247
Rehling, Stefan Bückeburg, DE 9 6

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