US2020406339A1PendingUtilityA1

Method of fastening a fastening element to a workpiece

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Assignee: PROFIL VERBINDUNGSTECHNIK GMBH & CO KGPriority: Jun 17, 2019Filed: Jun 15, 2020Published: Dec 31, 2020
Est. expiryJun 17, 2039(~12.9 yrs left)· nominal 20-yr term from priority
Inventors:Tobias JeneChristian Sowa
F16B 37/068F16B 37/065B23P 19/062C10M 173/02B21J 15/36B21J 15/38B21J 15/02
42
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Claims

Abstract

The present invention relates to a method of fastening a fastening element to a workpiece by means of a setting device, wherein the fastening element and/or the workpiece is/are at least sectionally reshaped during the fastening, and wherein a lubricant is used that is free of grease and free of oil, in particular with the lubricant being a substance mixture of two or more substances.

Claims

exact text as granted — not AI-modified
1 . A method of fastening a fastening element to a workpiece by means of a setting device, wherein at least one of the fastening element and the workpiece is at least sectionally reshaped during the fastening, and wherein a lubricant is used that is free of grease and free of oil. 
     
     
         2 . The method in accordance with  claim 1 , wherein the lubricant is a substance mixture of two or more substances. 
     
     
         3 . The method in accordance with  claim 1 ,
 wherein at least one of the fastening element and the workpiece is at least partly metallic at least in a region around a fastening point at which the fastening element is connected to the workpiece.   
     
     
         4 . The method in accordance with  claim 3 ,
 wherein at least one of the fastening element and the workpiece is completely composed of metal.   
     
     
         5 . The method in accordance with  claim 1 ,
 wherein the fastening element is a rivet element.   
     
     
         6 . The method in accordance with  claim 1 ,
 wherein the workpiece is a sheet metal part.   
     
     
         7 . The method in accordance with  claim 1 ,
 wherein the lubricant is a water-soluble and/or water-based lubricant.   
     
     
         8 . The method in accordance with  claim 1 ,
 wherein the lubricant comprises at least one of a corrosion inhibitor and a wear protection additive.   
     
     
         9 . The method in accordance with  claim 1 ,
 wherein the lubricant is free of at least one of chlorine, Teflon and aromatic compounds.   
     
     
         10 . The method in accordance with  claim 1 ,
 wherein a die is provided for reshaping at least one of the fastening element and the workpiece.   
     
     
         11 . The method in accordance with  claim 1 ,
 wherein at least one of the fastening element, the workpiece is wetted with the lubricant at least in a region around a fastening point at which the fastening element is connected to the workpiece.   
     
     
         12 . The method in accordance with  claim 11 ,
 wherein at least one of the fastening element, the workpiece is sprayed with the lubricant at least in a region around a fastening point at which the fastening element is connected to the workpiece.   
     
     
         13 . The method in accordance with  claim 10 ,
 wherein at least one of the fastening element, the workpiece and the die is wetted with the lubricant at least in a region around a fastening point at which the fastening element is connected to the workpiece.   
     
     
         14 . The method in accordance with  claim 13 ,
 wherein at least one of the fastening element, the workpiece and the die is sprayed with the lubricant at least in a region around a fastening point at which the fastening element is connected to the workpiece.   
     
     
         15 . The method in accordance with  claim 10 ,
 wherein the die has at least one opening by which lubricant can be supplied to the fastening point.   
     
     
         16 . The method in accordance with  claim 15 ,
 wherein the at least one opening is a nozzle.   
     
     
         17 . A system for fastening a fastening element to a workpiece by means of a setting device, wherein at least one of the fastening element and the workpiece is at least sectionally reshaped during the fastening; and wherein a lubricant application device is provided that is adapted and configured to apply a grease-free and oil-free lubricant to at least one of the workpiece and the fastening element. 
     
     
         18 . The system in accordance with  claim 17 ,
 further comprising a die for reshaping at least one of the fastening element and the workpiece.   
     
     
         19 . The system in accordance with  claim 18 ,
 wherein the lubricant application device is adapted and configured to apply a grease-free and oil-free lubricant to the die.

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