RADIUS CUTTER END MILL

PROBLEM TO BE SOLVED: To provide a radius cutter end mill wherein excellent machining performance is provided during the high-speed and high-feed machining of a three-dimensional curved surface such as a metal mold particularly using a recent high-speed machine tool, and three-dimensional curved sur...

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Bibliographic Details
Main Authors IMOTO TAKESHI, YOSHITOSHI SHIGEYASU, SAKAMOTO YASUSHI
Format Patent
LanguageEnglish
Published 10.08.1999
Edition6
Subjects
MACHINE TOOLS
METAL-WORKING NOT OTHERWISE PROVIDED FOR
MILLING
PERFORMING OPERATIONS
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To provide a radius cutter end mill wherein excellent machining performance is provided during the high-speed and high-feed machining of a three-dimensional curved surface such as a metal mold particularly using a recent high-speed machine tool, and three-dimensional curved surface forming and finish cutting are performed by dry cutting. SOLUTION: In a solid end mill provided with two or more circular-arc cutting edge 2 and end cutting edges 3 brought into contact therewith in one end of a main body and a shank 4 in the other end, at least one of the end cutting edges 3 is a cutter reaching a rotational center, a concave gradient is set equal to 5 deg. or higher, the circular-arc cutting edges 2 are extended over the tips of the end cutting edges 3 in a center axis, and the rake of the circular- arc cutting edges 2 positioned in a part from an outer diameter to the end surface of the end cutting edges 3 are set negative in the radial direction and positive in the axial direction.
Bibliography:Application Number: JP19980034355