Drilling of metal is the main method for cutting through-thickness cylindrical, dead ends, and drifting of the existing holes. Drilling is used for making holes in casing, rolled metal, in diverse cross-section rolled products and other metal products. Drilling of deep holes in hard metal is necessary, first of all, in order to insert a part of the detail into a hole to connect several details, cabling, etc.
Metal drilling is a method of mechanical treatment of metal products, which results in holes of the required depth and diameter. Drilling is done with a drill, a cutting tool which makes holes in the solid material or increases the diameter of the existing hole. Drilling involves fixing of a detail on the drilling table using collets, vice clamps, or cramp frames. After that the rotating drill is laid to the required point in the blank and drilling is performed.