Patent ID: 7637011
Filing Date: 2009-12-29
Classification: B01J,B21D,F01N,Y10T

Abstract:
1. A process for producing a structure in a smooth sheet-metal strip, which comprises the steps of: a) feeding a first section of the smooth sheet-metal strip to a first tool and feeding a second section of the sheet-metal strip to a second tool in a direction of advance; b) stopping the sheet-metal strip; c) carrying out sheet-metal machining of the first section of the sheet-metal strip using the first tool while introducing at least one hole into the first section; d) carrying out sheet-metal machining of the second section of the sheet-metal strip using the second tool while producing the structure in the second section of the sheet-metal strip, with the second section already having been provided with the at least one hole, with the second tool engaging in the at least one hole and with step a) being carried out simultaneously; and tensioning the sheet-metal strip with the second tool and a holding apparatus mounted in front of the first tool.