PUNCH FOR FORGING MULTI-STAGE INTERNALLY GROOVED MEMBER

PUNCH FOR FORGING MULTI-STAGE INTERNALLY GROOVED MEMBER

PROBLEM TO BE SOLVED: To generate cracks with difficulty during the pressing by providing a first shaft part in which a first groove formed part is formed and a second shaft part in which a second groove formed part smaller in diameter than the first shaft part is formed on the inserting direction s...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: YOKOO YOSHIKI, UKAI MOTOHIKO, NAKADA HIROMICHI
Format: Patent
Sprache:eng
Schlagworte:
FORGE FURNACES
FORGING
HAMMERING
MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PRESSING METAL
PUNCHING METAL
RIVETING
TRANSPORTING
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To generate cracks with difficulty during the pressing by providing a first shaft part in which a first groove formed part is formed and a second shaft part in which a second groove formed part smaller in diameter than the first shaft part is formed on the inserting direction side through an inclined surface of the prescribed inclination relative to the axis, to form a multi-stage inner groove with high concentricity. SOLUTION: A punch for forging two-stage inner spline member comprises a first shaft part 2 and a second shaft part 4 which is continuous to the first shaft part through an inclined surface 3 of