We insert PEM’s: sleeves, studs, made of the same material as sheet metal parts, made with a larger outside diameter than the hole in which they are embedded.
We use Pemserter presses with several point pressure force.
PEM assembly is a precision operation. The security of the connection and its resistance to tearing in later assembly operations ensures proper preparation of the machine, depending on the materials used and their external parameters (diameter, sheet thickness) and operator self-control of the operation.
Specifications
| pressure force | 53,4 kN |
| depth of descent | adjustable; |
| terminal type | axial. |
Examples of solutions
Subassemblies of the casing of passenger information display panel
Made of hot-dip galvanized sheet, 2 mm thick and supplemented with PEM’s, using the following technology: laser cutting, edge bending, pressing PEM’s, riveting and powder coating. Maintaining dimensional tolerances of each of the mounting points of separate panels, with external dimensions of the panel ranging from 1000 to 2000 mm, was ensured by using special equipment. The casing was powder coated which ensures a smooth texture and resistance to external weather conditions in order to meet the aesthetic requirements of the casing.
Shielding covers – fixing of various PEM’s for assembly of electronics PCB’s
Made of chromium-nickel sheet metal and connection elements fastened with high precision. The following technologies were used: laser cutting, edge bending and assembly of connection elements. High accuracy and aesthetics were ensured. The presented fragment presents different methods and types of PEM’s.
Shields for electronics PCB’s
Made of chromium-nickel or aluminium sheet, using the technology of: laser cutting, edge bending, assembly of various pressed PEM’s, from different material. The material class of the PEM’s must be compatible with the class of the sheet for which is used. Resistance to very difficult operating conditions, protected with chrome hardening or electro-cut.
Wide rack housing
Made of metal subassemblies, made of electrolytically coated sheet steel, with different thicknesses, then combined by plasma welding and pressure welding processes. The components were made using the following technologies: laser punching, multi-operational edge bending, fastening of connection elements on the press and masking of some surfaces before powder coating. The next two operations were powder painting and screen printing.
