JPS55150905A - Drill for high speed drilling - Google Patents

Drill for high speed drilling

Info

Publication number
JPS55150905A
JPS55150905A JP5707979A JP5707979A JPS55150905A JP S55150905 A JPS55150905 A JP S55150905A JP 5707979 A JP5707979 A JP 5707979A JP 5707979 A JP5707979 A JP 5707979A JP S55150905 A JPS55150905 A JP S55150905A
Authority
JP
Japan
Prior art keywords
margins
ridges
drill
cutter grooves
along
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5707979A
Other languages
Japanese (ja)
Inventor
Yutaka Ito
Akio Takahashi
Motoyo Wajima
Yasusada Morishita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5707979A priority Critical patent/JPS55150905A/en
Publication of JPS55150905A publication Critical patent/JPS55150905A/en
Pending legal-status Critical Current

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  • Drilling Tools (AREA)

Abstract

PURPOSE: To reduce the heat generation in print circuit substrates when drilling holes through them at a high speed and also avoid smear developing around the holes, by forming a plural number of margins on the ridges along the two cutter grooves of a twist type drill.
CONSTITUTION: Along the ridges of the cutter grooves 5 that run from the drill tip 1 to the drill stem 6, margins 4 are provided, starting from the lip corner 3. The margins 4 are not formed on the groove ridges continuously to the attachment portion thereof. At the intermediate portions the margins are omitted. In other words, in this construction a plural number of margins are formed along the ridges of the cutter grooves 5, giving intermittent cutting. Accordingly, the friction heat is not continuously generated and the overall heat generation can be reduced.
COPYRIGHT: (C)1980,JPO&Japio
JP5707979A 1979-05-11 1979-05-11 Drill for high speed drilling Pending JPS55150905A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5707979A JPS55150905A (en) 1979-05-11 1979-05-11 Drill for high speed drilling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5707979A JPS55150905A (en) 1979-05-11 1979-05-11 Drill for high speed drilling

Publications (1)

Publication Number Publication Date
JPS55150905A true JPS55150905A (en) 1980-11-25

Family

ID=13045460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5707979A Pending JPS55150905A (en) 1979-05-11 1979-05-11 Drill for high speed drilling

Country Status (1)

Country Link
JP (1) JPS55150905A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7338237B2 (en) * 2004-05-05 2008-03-04 Seco Tools Ab Drill and drill tip for chip removing machining
WO2008080748A1 (en) * 2006-12-27 2008-07-10 Günther & Co. GmbH Deep hole drill with supporting ring and method for producing said drill
WO2011038896A1 (en) * 2009-10-02 2011-04-07 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG Drill
US20110211924A1 (en) * 2008-09-10 2011-09-01 Mitsubishi Materials Corporation Drill
EP2550123B1 (en) * 2010-03-25 2017-11-22 Klenk GmbH & Co. KG Drilling tool

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7338237B2 (en) * 2004-05-05 2008-03-04 Seco Tools Ab Drill and drill tip for chip removing machining
WO2008080748A1 (en) * 2006-12-27 2008-07-10 Günther & Co. GmbH Deep hole drill with supporting ring and method for producing said drill
US20110211924A1 (en) * 2008-09-10 2011-09-01 Mitsubishi Materials Corporation Drill
US8876445B2 (en) * 2008-09-10 2014-11-04 Mitsubishi Materials Corporation Drill
WO2011038896A1 (en) * 2009-10-02 2011-04-07 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG Drill
JP2013506562A (en) * 2009-10-02 2013-02-28 マパル ファブリック フュール プラツィジョンズベルクゼウグ ドクトル．クレス カーゲー drill
US9073130B2 (en) 2009-10-02 2015-07-07 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG Drill
DE102009049087C5 (en) * 2009-10-02 2018-02-08 MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG drill
EP2550123B1 (en) * 2010-03-25 2017-11-22 Klenk GmbH & Co. KG Drilling tool

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