Bending groove processing method of the groove processing equipment and hollow plate for the bending of the hollow plate

摘要

PROBLEM TO BE SOLVED: To provide a groove machining device for folding a hollow plate material and a groove machining method for folding the hollow plate material by which the groove for folding the hollow plate material is precisely formed in a short period of time and productivity and a quality and the like can be improved.;SOLUTION: The groove machining device 1 for folding is provided with a heating member 2, a cooling member 3 and a groove machining member 4 and has a structure such that the groove 11 for folding is formed by heating a foam board 10 by the heating member 2 and the groove machining member 4 and after the heating, forcedly cooling the board 10 by the cooling member 3 and the groove machining member 4.;COPYRIGHT: (C)2012,JPO&INPIT