fúrófejek

A fúrófej, or drill bit, is a cutting tool used to create holes in various materials. It is typically attached to a drill and rotates at high speeds. The design of a drill bit varies depending on the material it is intended to cut and the desired size and shape of the hole. Common materials for drill bits include high-speed steel (HSS), cobalt steel, and tungsten carbide.

The basic components of most drill bits are the shank, which is the part that grips the drill chuck, and the cutting head, which contains the sharp edges that do the cutting. The flutes, or helical grooves, on the body of the drill bit are crucial for clearing away chips and debris generated during the drilling process, and for directing cutting fluid to the tip if used.

Drill bits are categorized by their intended use. Twist drills are the most common type and are suitable for general-purpose drilling in wood, metal, and plastic. Masonry bits have hardened tips designed to penetrate hard materials like concrete, brick, and stone. Spade bits or paddle bits are used for creating larger holes in wood, particularly in construction. Forstner bits create clean, flat-bottomed holes in wood. Specialized drill bits exist for drilling glass, tile, and other delicate or extremely hard materials, often employing diamond or carbide tips and different cooling methods. The selection of the correct drill bit is essential for efficient and safe drilling.