Three conventional machining technologies

◆ Drills:  Drills work by spinning a drill bit and moving the bit into contact with stationary stock.

◆Lathes: we havelathes, which function in reverse to drilling. Lathes spin the block of material against a stationary drill bit or cutter to remove material in a circular or fluid path. The shape capabilities on lathes are more limited than other techniques, but modern technology does allow these machines to create things such as square holes and non-circular shapes.

◆Milling machine: the most common CNC machine type is referred to as a milling machine. Milling machines involve the use of rotary cutting tools to remove material from a stock piece. These machines function similar to drills, with their tooling capabilities encompassing much more variety.