| US 7,572,087 B2 | ||
| Throwaway tip and throwaway-type cutting tool | ||
| Hidehiko Nagaya, Yuuki-gun (Japan); and Hiroshi Shimomura, Yuuki-gun (Japan) | ||
| Assigned to Mitsubishi Materials Corporation, Tokyo (Japan) | ||
| Filed on Jul. 30, 2007, as Appl. No. 11/830,253. | ||
| Application 11/830253 is a division of application No. 10/991506, filed on Nov. 19, 2004. | ||
| Application 10/991506 is a division of application No. 09/639946, filed on Aug. 17, 2000, granted, now 6,939,090. | ||
| Claims priority of application No. 11-230916 (JP), filed on Aug. 17, 1999; application No. 2000-160902 (JP), filed on May 30, 2000; and application No. 2000-180438 (JP), filed on Jun. 15, 2000. | ||
| Prior Publication US 2007/0280791 A1, Dec. 06, 2007 | ||
| Int. Cl. B23B 27/02 (2006.01); B23B 27/14 (2006.01) | ||
| U.S. Cl. 407—113 [407/115] | 26 Claims |
| 1. A cutting tool, comprising:
an end-milling tool body having a distal end; and
a first tip mounted to the distal end of the tool body, said first tip comprising a substantially planar plate including a
first edge corner having a corner angle of less than 90°, a second edge corner having a corner angle of greater than 90°,
a third edge corner having a corner angle of 90°, and a fourth edge corner having a corner angle of 90°, wherein
the plate includes a seating face, a cutting edge face, and at least one side surface that extends between the seating face
and the cutting edge face, and
the at least one side surface outwardly inclines from the seating face to the cutting edge face.
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