Cutting insert and indexable ball end mill

Cutting insert and indexable ball end mill

A cutting insert includes a rake face, a seating face facing an opposite side to the rake face and seated on an insert mounting seat, and a flank face extending around the rake face and the seating face, in which two cutting edges each having an arcuate cutting edge portion extending in an arc shape...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Nagafuchi, Kenji, Kobayashi, Yoshiyuki, Kiuchi, Yasuhiro
Format: Patent
Sprache:eng
Schlagworte:
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
MILLING
PERFORMING OPERATIONS
TRANSPORTING
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Beschreibung
Zusammenfassung:A cutting insert includes a rake face, a seating face facing an opposite side to the rake face and seated on an insert mounting seat, and a flank face extending around the rake face and the seating face, in which two cutting edges each having an arcuate cutting edge portion extending in an arc shape and a linear cutting edge portion which is in contact with the arcuate cutting edge portion are formed on an intersecting ridgeline portion between the rake face and the flank face, a groove portion having a wall surface coming into contact with a projection portion protruding from a bottom surface of the insert mounting seat is formed on the seating face, and the groove portion has a narrow width portion in which a groove width decreases from one end side toward the other end side in a direction in which the groove portion extends.