MANUFACTURE OF WASHER AND DEVICE THEREOF

MANUFACTURE OF WASHER AND DEVICE THEREOF

PROBLEM TO BE SOLVED: To restrain the manufacturing cost to low by reducing scrap quantity finally wasted. SOLUTION: A washer part 14a is heading-formed to the tip part of a blank 14 with a first die set for forming. The washer part 14a is punched out from the blank 14 shifted from the first die set...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TAJIMA KUNIHIRO, AKAZAWA TADASHI
Format: Patent
Sprache:eng
Schlagworte:
MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To restrain the manufacturing cost to low by reducing scrap quantity finally wasted. SOLUTION: A washer part 14a is heading-formed to the tip part of a blank 14 with a first die set for forming. The washer part 14a is punched out from the blank 14 shifted from the first die set for forming to a first die set for punching to manufacture a first washer 15. Successively, the washer part 14a is heading-formed to the tip part of the blank 14 shifted from the first die set for punching to a second die set for forming. The washer part 14a is punched out from the blank 14 shifted from the second die set for forming to a second die set for punching to manufacture the second washer 15. Further, the washer part 14a is heading-formed to the tip part of the blank 14 shifted from the second die set for punching to a third die set for forming. The washer part 14a is punched out from the blank 14 shifted from the third die set for forming to a third die set for punching to manufacture the third washer 15.