High performance punching
High-performance punching is a form of punching designed for large numbers of small components , in which a number of further processing steps ( bending , folding , embossing , flanging , etc.) are integrated. Are processed metallic materials such as brass , stainless steel , bronze or beryllium copper, but other materials such as plastics.
High-performance punches work directly from the coil (wound sheet metal strip, up to 3 mm thick) with up to 2000 strokes per minute.
The development and production of the tools (punching, bending or progressive tools ) requires a lot of know-how due to the high number of strokes and the number of units in the millions . The punching tools are generally manufactured from hard metal by grinding or spark erosion .
The selective electroplating of the surface is often coupled with high-performance stamping , for example to refine the contact points on plugs. The reel-to-reel process (full tape or punched strips) is used, which means that galvanizing can be carried out in a continuous bath. The materials used are gold, palladium / nickel, silver or also tin and tin alloys.
The further processing of the stamped parts in the production of assemblies plays an increasingly important role, especially the plastic encapsulation.
Sources and individual references
- ↑ W. Hellwig: Chipless Manufacturing: Stamping: Basics for the Production of Simple and Complex Precision Stamped Parts , Springer-Verlag 2009, 308 pages, foreword to the 9th edition