Clinch studs are inserted through pre-pierced sheets into clinch dies. Initially the hole in the sheet is widened by the calibrating collar. After that, the clinch stud is precentred by means of the calibrating collar. Finally, the sheet material is forced into the annular groove and the Torx locking feature is pressed in. A very high loadcarrying capacity is achieved by means of the patented underhead geometry.
The reduction of production stages and of energy consumption results in considerable cost savings. An additional advantage is the possibility of processing several clinch studs in a single stage.
