PURPOSE: To receive and deliver a work with different diameter without replacing a work holder and a work transfer holder by forming a different diameter work table in the work holder and the work transfer holder, and installing a slide mechanism of the work transfer holder and a vertical driving mechanism.

CONSTITUTION: When a small the diameter work 11 is received and delivered, a work holder 2 where the small diameter work is placed on the second table 4 is slide-driven to a receiving position. Next, a transfer holder 6 which is orthogonally disposed with regard to the work holder 2 is slide-driven to a receiving position, whereas an opening part made in the work transfer holder 6 is inserted so as to bind the second table 4. The work transfer holder 6 is moved upward by a vertical driving mechanism to deliver the work placed on the second table 4 of the work holder 2 to work table formed on the right and left of the opening part of the work transfer holder 6.