To work the entire product with high accuracy and at a low cost by a simple and small construction without requiring an attachment.

A bar stock R is supplied to a first chuck 4 by a feeder 1 to stop by a stopper built in the chuck 4, for holding by a claw 16. The bar stock R is cut by the cutting tool 9 of a first tool post 6 in a required length, and the protruding part of a cut piece W is cut by the turning tool 10 of the first tool post 6. The cut piece W is then released from the first chuck 4 to extrude to the side of a second chuck 5 through the trough hole of a main spindle 3 by the bar stock R, for stopping by the stopper 12 of a second tool post 7. The cut piece is then held by the claw 20 of the second chuck 5, and its protruding part is cut by the turning tool 11 of the second tool post 7.