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JPS5676314A - Drill for working high-manganese series nonmagnetic steel - Google Patents

Drill for working high-manganese series nonmagnetic steel

Info

Publication number
JPS5676314A
JPS5676314A JP15338779A JP15338779A JPS5676314A JP S5676314 A JPS5676314 A JP S5676314A JP 15338779 A JP15338779 A JP 15338779A JP 15338779 A JP15338779 A JP 15338779A JP S5676314 A JPS5676314 A JP S5676314A
Authority
JP
Japan
Prior art keywords
drill
cutting edges
parts
life
line substantially
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.)
Granted
Application number
JP15338779A
Other languages
Japanese (ja)
Other versions
JPS5939245B2 (en
Inventor
Suguru Motonishi
Takamori Tanigawa
Sadayoshi Furusawa
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP15338779A priority Critical patent/JPS5939245B2/en
Publication of JPS5676314A publication Critical patent/JPS5676314A/en
Publication of JPS5939245B2 publication Critical patent/JPS5939245B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)

Abstract

PURPOSE: To elongate the life of the drill by a method wherein an axial rake of a positive constant value is provided to the drill.
CONSTITUTION: In the drill provided with a tip angle ϕ of 130°W150°, a pair of cutting edges pinching a chisel point CP are arranged in a stragith line substantially and a constant positive axial rake α is provided to the whole area of the cutting edge from the chisel point CP to marginal parts 2 of the outer periphery of the drill. The cutting edges 1, 1 are arranged in the straigtht line substantially and secondary cutting edges are formed while flat parts 5 are formed by removing the outer peripheral side corner parts of the cutting edges thereby affecting a good effect to the life of the drill. In other words, the cutting edges wear soon when they are in sharp conditions, however, they will never wear easily when they are provided with configurations such as flat parts 5.
COPYRIGHT: (C)1981,JPO&Japio
JP15338779A 1979-11-26 1979-11-26 Drill for machining high manganese non-magnetic steel Expired JPS5939245B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15338779A JPS5939245B2 (en) 1979-11-26 1979-11-26 Drill for machining high manganese non-magnetic steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15338779A JPS5939245B2 (en) 1979-11-26 1979-11-26 Drill for machining high manganese non-magnetic steel

Publications (2)

Publication Number Publication Date
JPS5676314A true JPS5676314A (en) 1981-06-23
JPS5939245B2 JPS5939245B2 (en) 1984-09-21

Family

ID=15561361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15338779A Expired JPS5939245B2 (en) 1979-11-26 1979-11-26 Drill for machining high manganese non-magnetic steel

Country Status (1)

Country Link
JP (1) JPS5939245B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS601970U (en) * 1983-06-16 1985-01-09 トヨタ自動車株式会社 Ignition timing detection device
JP2003534927A (en) * 2000-06-02 2003-11-25 ケンナメタル インコーポレイテッド Drill bit for spiral drill and method for forming a cutting groove in drill bit area for spiral drill
WO2007118718A1 (en) * 2006-04-19 2007-10-25 Walter Ag Method for making a deep hole and a pilot drill therefor
JP2008500190A (en) * 2004-05-28 2008-01-10 ケンナメタル　インコーポレイテッド Drills, especially twist drills
US9199315B2 (en) 2000-06-02 2015-12-01 Kennametal Inc. Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill
EP3175943A4 (en) * 2014-07-29 2018-03-14 KYOCERA Corporation Drill and method of manufacturing cut product using same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS601970U (en) * 1983-06-16 1985-01-09 トヨタ自動車株式会社 Ignition timing detection device
JP2003534927A (en) * 2000-06-02 2003-11-25 ケンナメタル インコーポレイテッド Drill bit for spiral drill and method for forming a cutting groove in drill bit area for spiral drill
US9199315B2 (en) 2000-06-02 2015-12-01 Kennametal Inc. Twist drill and method for producing a twist drill which method includes forming a flute of a twist drill
JP2008500190A (en) * 2004-05-28 2008-01-10 ケンナメタル　インコーポレイテッド Drills, especially twist drills
WO2007118718A1 (en) * 2006-04-19 2007-10-25 Walter Ag Method for making a deep hole and a pilot drill therefor
EP3175943A4 (en) * 2014-07-29 2018-03-14 KYOCERA Corporation Drill and method of manufacturing cut product using same
US10259050B2 (en) 2014-07-29 2019-04-16 Kyocera Corporation Drill and method of manufacturing machined product using the same

Also Published As

Publication number Publication date
JPS5939245B2 (en) 1984-09-21

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