CUTTING TOOL

CUTTING TOOL

PROBLEM TO BE SOLVED: To provide an end mill portion, to improve cutting chip control while suppressing chipping and abrasion of a cutting edge, and to carry out stable tapping. SOLUTION: The cutting tool is feed-moved in synchronism with rotations by a machine tool, and machines a female thread. Th...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SAKAI SHINJIRO, SANO MASAMICHI
Format: Patent
Sprache:eng
Schlagworte:
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
PERFORMING OPERATIONS
THREAD CUTTING
TRANSPORTING
WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTIONTHEREWITH
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To provide an end mill portion, to improve cutting chip control while suppressing chipping and abrasion of a cutting edge, and to carry out stable tapping. SOLUTION: The cutting tool is feed-moved in synchronism with rotations by a machine tool, and machines a female thread. The cutting tool has an end mill portion, a lead-in part, and a complete thread. A peripheral cutting edge of the end mill portion is provided so as to have a diameter slightly smaller than a diameter of a male thread. An end cutting edge of the end mill portion is an even end cutting edge, has 1-5° middle-low gradients, and is provided to the extent of 50-80% of a tool diameter from the peripheral cutting edge. COPYRIGHT: (C)2008,JPO&INPIT