BALL END MILL - OSG CORP

Title:

BALL END MILL

Document Type and Number:

WIPO Patent Application WO/2007/046132

Kind Code:

A1

Abstract:

[PROBLEMS] To provide a ball end mill capable of increasing a feed speed and a depth of cut by suppressing vibration to increase a cutting efficiency. [MEANS FOR SOLVING THE PROBLEMS] This ball end mill (1) comprises ball edges (6a to 6c) having first edge parts (6a1 to 6c1), second edge parts (6a2 to 6c2), and third edge parts (6a3 to 6c3). Since a first radius of curvature (R1), a second radius of curvature (R2), and a third radius of curvature (R3) are set to be different from each other, the vibration of the ball end mill (1) can be suppressed by changing the direction of a cutting resistance (cutting torque) given from a work (20) to the ball end mill (1) in the radial direction of the ball end mill by the first edge parts (6a1 to 6c1), the second edge parts (6a2 to 6c2), and the third edge parts (6a3 to 6c3). As a result, the feed speed and the depth of cut can be increased to increase the cutting efficiency.

Inventors:

OSAWA JIRO (JP)
HAMATAKE YASUO (JP)
AOKI WATARU (JP)

Application Number:

PCT/JP2005/019086

Publication Date:

April 26, 2007

Filing Date:

October 18, 2005

Export Citation:

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Assignee:

OSG CORP (JP)
OSAWA JIRO (JP)
HAMATAKE YASUO (JP)
AOKI WATARU (JP)

International Classes:

B23C5/10

Domestic Patent References:

WO2000029153A1

2000-05-25

Foreign References:

JPH02303707A	1990-12-17
JPS5331286A	1978-03-24
JP2000117522A	2000-04-25
JPS58164617U	1983-11-02
JPS5526620U	1980-02-21

Other References: