Abstract: A machine tool includes a machine support, a work table positioned on the machine support, a moving device and a feeding device. The moving device is movably mounted on the machine support along a first direction above the work table. The feeding device is slidably positioned on the moving device along a second direction at ninety degrees from the first direction. The feeding device includes a feeding mechanism and a cutter. The feeding mechanism drives the tool holder and the cutter to move back and forth along a third orthogonal direction.

Abstract: A feeding device includes a tool holder, a cutter, a feeding mechanism and a mounting seat. The cutter is positioned on the tool holder. The mounting seat has at least one guiding portion. The tool holder is slidably engaged with the at least one guiding portion. The feeding mechanism includes at least two drivers. Each driver includes a forcer and a stator. The forcers are mounted in the mounting seat, the stators are fixedly positioned on the tool holder. Interactions between alternating magnetic fields produced by the forcers and magnetic fields produced by the stators drive the tool holder and the cutter to backwards and forwards under precise control along the guiding portion.