PURPOSE: To carry a work effectively by disposing a conveyor means, which can be projected or retreated, to a table surface.

CONSTITUTION: The rollers 9... of a conveyor means A are projected onto a table surface, and a table 4 is connected to a moving means. Consequently, when the conveyor means A is shifted to the position of the start of the process of rollers 27... while being backward driven, a work W is fed onto the table 4 without the possibility of falling when the conveyor means A of the table 4 pushes in the work W on the rollers 27... of a carrying-in means C in the same direction. Since a stopper means is projected on the table and corresponds to feed-in, the work W is set at a specified position, the conveyor means A is stopped after feed-in while being immersed in the table surface, and the work W is sucked and fixed at he fixed position of the table 4 by a vacuum. The work W is fastened, the table 4 is controlled and driven in the direction and an X axis according to an NC program while a machining cutter 26 is controlled and driven in the directions of a Y axis and a Z axis, and the work W is machined in a specified manner.