A machining apparatus has a frame defining an input station, an output station, and first and second machining stations. Respective first and second workpiece holders in the first and second machining stations can retain a workpiece therein. A first pivotal turret is movable vertically and horizontally on the frame between the input station and the first machining station and carries at least one machining tool and a first grab, and a second pivotal turret is movable vertically and horizontally on the frame between the first and second machining stations and the output station and carries at least one machining tool and second and third grabs.