| 摘要 |
The method according to the invention for riveting, or self-piercing, by means of a riveting or self-piercing device ( 8 ), having a male die ( 3 ) guided by a pick-up device ( 4 ), both of which in each case can be moved towards a female die ( 5 ) and/or a workpiece ( 6 ), wherein the female die ( 5 ) and riveting or self-piercing device ( 8 ) will be connected to one another via a counterforce structure ( 9 ). The relative movement between the pick-up device ( 4 ) and the counterforce structure ( 9 ) is measured by a first sensor ( 1 ), and the relative movement between counterforce structure ( 9 ) and male die ( 3 ) is measured by a second sensor ( 2 ). The depth of the riveting or piercing is adjusted with the aid of the two measured values. The associated device allows fast, accurate detection of the thickness of a workpiece ( 6 ) and precise piercing or riveting with constant predetermined depth irrespective of variations in the quality of the material or other parameters, which can result in deformations of the counterforce structure ( 9 ) during the piercing process.
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