As one of the most widely used tools in industrial manufacturing, it is very common to resharpen twist drill bits after they have been worn out. Most of the factories that use twist drill bits are resharpening them by hand in the grinding machine due to the constraints. The following is the manual g Read More

A spiral groove tap is a tool for machining threads. It is a type of tap, so named because of the spiral shape of its chip groove. Spiral groove taps are divided into left-hand spiral groove taps and right-hand spiral groove taps. The geometrical parameters of spiral groove taps are mainly reserved Read More