EXTRUDED SHAPE FOR DEVELOPING WORKING

• Main Authors: YAZAKI HIDEO, KANDA HIROTATSU, KITANO YASUHIKO
• Format: Patent
• Language: English
• Published: 20.05.2003
• Edition: 7
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING

PROBLEM TO BE SOLVED: To provide an extruded shape for developing working which is preferably extruded and, furthermore, the developed extruded shape for developing is preferably formed with a press. SOLUTION: In the extruded shape 20 for developing working, the frame part 21 of which is surrounded by a bend part 23, the tip 23a of this bend part 23 is made into an annular shape by connecting to the connecting part 23b with a temporary connecting material 24 which is thinner than the bend part 23, the tip parts 26a-28a of 1st-3rd temporary stay materials 26-28 are engaged with the inner periphery 23d of the bend part 23 by radially extending the 1st-3rd temporary stay materials 26-28 from the outer periphery of the frame part 21 and also the tip parts 26a-28a and the base parts 26b-28b of the 1st-3rd temporary stay materials 26-28 are made thinner than the middle parts 26c-28c of the 1st-3rd temporary stay materials 26-28.