försänkande

Försänkande is a machining process used to create a conical recess in a workpiece, allowing a screw or bolt head to sit flush with or below the surface. This is typically achieved using a tool called a countersink. Countersinks are cutting tools with multiple flutes that remove material to form the desired shape. The angle of the countersink, commonly 82 or 90 degrees, determines the angle of the conical seat.

There are several types of countersinks, including hand countersinks, drill press countersinks, and rotary countersinks. Hand countersinks are manually operated, while drill press and rotary versions are powered. The choice of countersink depends on the size of the hole, the material being worked, and the required precision.

The primary purpose of försänkande is aesthetic, creating a clean and professional finish. It also serves a functional purpose by preventing protrusions that could snag on other objects or interfere with the assembly of parts. In some applications, such as when a smooth surface is critical for aerodynamics or preventing damage to surrounding materials, countersinking is essential. The process is widely used in woodworking, metalworking, and various manufacturing industries.