Skärinlägg

Skärinlägg, often translated as cutting insert or carbide insert, is a replaceable piece of hard material used in metalworking for cutting operations. These inserts are typically made from cemented carbide, ceramics, or cubic boron nitride (CBN), materials chosen for their exceptional hardness, wear resistance, and ability to withstand high temperatures and pressures generated during machining.

The primary function of a skärinlägg is to form the cutting edge of a tool. They are designed with specific geometries, including rake angles and clearance angles, to optimize chip removal, surface finish, and tool life for different materials and machining processes. Skärinlägg are held in place by specialized tool holders, which provide a secure and precise mounting system. This modular design offers significant advantages, allowing for quick replacement of worn or damaged cutting edges without needing to replace the entire tool. This reduces downtime and costs in manufacturing.

Skärinlägg are essential components in a wide range of machining operations, including turning, milling, drilling, and threading. The choice of skärinlägg material and geometry is crucial and depends on factors such as the workpiece material (e.g., steel, aluminum, cast iron), the cutting speed, feed rate, depth of cut, and the desired surface finish. The development of new skärinlägg materials and coatings continues to drive advancements in machining efficiency and productivity.