Invention Grant
- Patent Title: Drill, and drilling method
- Patent Title (中): 钻,钻法
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Application No.: US10588040Application Date: 2005-01-27
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Publication No.: US07824135B2Publication Date: 2010-11-02
- Inventor: Wolfgang Radkowitsch , Klaus Metzner , Friedrich Bleicher
- Applicant: Wolfgang Radkowitsch , Klaus Metzner , Friedrich Bleicher
- Applicant Address: AT Ternitz
- Assignee: Schoeller-Bleckmann Oilfield Technology GmbH & Co. KG
- Current Assignee: Schoeller-Bleckmann Oilfield Technology GmbH & Co. KG
- Current Assignee Address: AT Ternitz
- Agency: Collard & Roe, P.C.
- Priority: ATA142/2004 20040202
- International Application: PCT/AT2005/000021 WO 20050127
- International Announcement: WO2005/072897 WO 20050811
- Main IPC: B23B35/00
- IPC: B23B35/00 ; B23B51/06

Abstract:
The invention relates to a drill (4) and a device or a method for drilling boreholes in workpieces (3), in which a periodically acting radial force (19) is exerted on the drill head (5) of the drill (4). The drill head (5) of the drill (4) has a cutting edge (52) extending only over a part of the diameter D (51) and is designed to have a lateral, V-shaped chip removing groove or bead (59) and with a channel (12) with an outlet opening (56) in the drill head (5) for supplying a drill fluid (9). On a drill side (61) of the drill head (5) opposite the bead (59) between a first and a second cylinder casing partial surface (64, 65) of the drill head (5) a rear offset (63) is formed which reduces the cross section of the drill head (5) in relation to an enclosing cylinder casing surface (61) of the drill head (5).
Public/Granted literature
- US20070172323A1 Drill, and drilling method Public/Granted day:2007-07-26
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