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1. US20120039680 - Drill and method of cutting workpiece using the same

官庁 アメリカ合衆国
出願番号 13260895
出願日 26.03.2010
公開番号 20120039680
公開日 16.02.2012
特許番号 08882411
特許付与日 11.11.2014
公報種別 B2
IPC
B23B 51/02
B処理操作;運輸
23工作機械;他に分類されない金属加工
B旋削;中ぐり
51ボール盤用工具
02ツイストドリル
H05K 3/00
H電気
05他に分類されない電気技術
K印刷回路;電気装置の箱体または構造的細部,電気部品の組立体の製造
3印刷回路を製造するための装置または方法
CPC
B23B 51/02
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
51Tools for drilling machines
02Twist drills
B23B 2251/043
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2251Details of tools for drilling machines
04Angles, e.g. cutting angles
043Helix angles
B23B 2251/046
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2251Details of tools for drilling machines
04Angles, e.g. cutting angles
043Helix angles
046Variable
B23B 2251/245
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
2251Details of tools for drilling machines
24Overall form of drilling tools
241Cross sections of the diameter of the drill
245Variable cross sections
H05K 3/0047
HELECTRICITY
05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
KPRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
3Apparatus or processes for manufacturing printed circuits
0011Working of insulating substrates or insulating layers
0044Mechanical working of the substrate, e.g. drilling or punching
0047Drilling of holes
Y10T 408/03
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
408Cutting by use of rotating axially moving tool
03Processes
出願人 Koike Yoshifumi
Kyocera Corporation
Ogawa Hiroshi
発明者 Koike Yoshifumi
Ogawa Hiroshi
代理人 Volpe and Koenig, P.C.
優先権情報 2009-107911 27.04.2009 JP
2009-129332 28.05.2009 JP
発明の名称
(EN) Drill and method of cutting workpiece using the same
要約
(EN)

A drill of the present invention includes a first cutting edge and a second cutting edge each located at a front end of a cylindrical cutting part; a first flute and a second flute connected to the first cutting edge and the second cutting edge, respectively, in which the first and second flutes are positioned helically from a front end to a rear end on a peripheral section of the cutting part; and a first land and a second land each extended from the front end to the rear end on the peripheral section of the cutting part, in which the first and second lands are being located portions between the first flute and the second flute, respectively. The first flute and the second flute are separately extended from the front end to the rear end. The cutting part includes a first region in which a diameter of an inscribed circle in a cross section perpendicular to a rotation axis of the cutting part increases in a direction away from the front end and toward the rear end. A method of cutting a workpiece using the drill is also provided.