METHOD OF MANUFACTURING PLATE-LIKE MEMBER WITH GROOVE

摘要

PROBLEM TO BE SOLVED: To provide a method of manufacturing a plate-like member with a groove capable of reducing machining cost by forming the groove part where is suitable to machining only by press working. SOLUTION: The method of manufacturing the plate-like member with the groove is provided with: the initial punching stage where the initial hole 33 is formed on the plate-like member 30 by punching; squeezing stage where a squeezed part 34 is formed by squeezing the member so as to include the initial hole 33 with a punch 110 which is formed so that the metal removing amount in the tip part is successively increased toward the center from the side of one surface of the plate-like member 30; prepared hole punching stage where the hole 33a the inside diameter of which is contracted in the squeezing stage is re-punched into a prepared hole 35 having a prescribed inside diameter by punching; erecting stage where an erected part 36 is formed by erecting the border of the prepared hole 35 to the side of one surface while ironing the border so as to become a prescribed thickness; and shape adjusting stage where the shape is adjusted by pressing the shape of the erected part 36 and the groove part 32 formed between this erected part 36 and the squeezed part 34 by pressing. COPYRIGHT: (C)2007,JPO&INPIT