JPS61141007U - - Google Patents

Info

Publication number
JPS61141007U
JPS61141007U JP2412985U JP2412985U JPS61141007U JP S61141007 U JPS61141007 U JP S61141007U JP 2412985 U JP2412985 U JP 2412985U JP 2412985 U JP2412985 U JP 2412985U JP S61141007 U JPS61141007 U JP S61141007U
Authority
JP
Japan
Prior art keywords
drill
drill body
chip discharge
cutting edge
curved surface
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
JP2412985U
Other languages
Japanese (ja)
Other versions
JPH0333375Y2 (en
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 filed Critical
Priority to JP1985024129U priority Critical patent/JPH0333375Y2/ja
Publication of JPS61141007U publication Critical patent/JPS61141007U/ja
Application granted granted Critical
Publication of JPH0333375Y2 publication Critical patent/JPH0333375Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Drilling Tools (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図および第２図はこの考案の一実施例を示
し、第１図はその要部を示す図であつて、第２図
の矢視拡大図、第２図はその一部省略側面図、
第３図はこの考案の他の実施例を示す第１図と同
様の図である。 １…ドリル本体、２…切刃、３…切屑排出溝、
３ａ…すくい面を構成する部分、３ｂ…切刃側を
向く部分。 Figures 1 and 2 show an embodiment of this invention, with Figure 1 being an enlarged view in the direction of the arrows in Figure 2, and a partially omitted side view of Figure 2. ,
FIG. 3 is a diagram similar to FIG. 1 showing another embodiment of this invention. 1... Drill body, 2... Cutting blade, 3... Chip discharge groove,
3a... Part forming the rake face, 3b... Part facing the cutting edge side.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ドリル本体の先端部に２つの切刃を形成すると
ともに、これら２つの切刃に対応して前記ドリル
本体の外周に２つの切屑排出溝を形成してなるド
リルにおいて、前記ドリル本体の心厚を０．２５
Ｄ〜０．５０Ｄ（Ｄはドリルの直径）に設定し、
前記切屑排出溝を画成する壁面のうちすくい面を
構成する部分を回転方向に対して凹む凹曲面によ
つて形成するとともに、切刃側を向く部分を切刃
側に向かつて突出する凸曲面によつて形成したこ
とを特徴とするドリル。 In the drill, in which two cutting edges are formed at the tip of the drill body, and two chip discharge grooves are formed on the outer periphery of the drill body corresponding to these two cutting edges, the core thickness of the drill body is 0.25
Set to D ~ 0.50D (D is the diameter of the drill),
A portion of the wall surface defining the chip discharge groove that constitutes the rake surface is formed by a concave curved surface that is concave with respect to the rotation direction, and a portion facing the cutting edge is a convex curved surface that protrudes toward the cutting edge. A drill characterized by being formed by.
JP1985024129U 1985-02-21 1985-02-21 Expired JPH0333375Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985024129U JPH0333375Y2 (en) 1985-02-21 1985-02-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985024129U JPH0333375Y2 (en) 1985-02-21 1985-02-21

Publications (2)

Publication Number Publication Date
JPS61141007U true JPS61141007U (en) 1986-09-01
JPH0333375Y2 JPH0333375Y2 (en) 1991-07-16

Family

ID=30517998

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985024129U Expired JPH0333375Y2 (en) 1985-02-21 1985-02-21

Country Status (1)

Country Link
JP (1) JPH0333375Y2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004512968A (en) * 2000-10-05 2004-04-30 ケンナメタル　インコーポレイテッド Cutting tool and method and apparatus for manufacturing the cutting tool
WO2009054400A1 (en) * 2007-10-26 2009-04-30 Sumitomo Electric Hardmetal Corp. Twist drill
WO2018221303A1 (en) * 2017-05-29 2018-12-06 京セラ株式会社 Drill and method for manufacturing cutting workpiece

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59219108A (en) * 1983-05-25 1984-12-10 Sumitomo Electric Ind Ltd Drill
JPS6022212U (en) * 1983-07-25 1985-02-15 三菱マテリアル株式会社 carbide drill

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59219108A (en) * 1983-05-25 1984-12-10 Sumitomo Electric Ind Ltd Drill
JPS6022212U (en) * 1983-07-25 1985-02-15 三菱マテリアル株式会社 carbide drill

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004512968A (en) * 2000-10-05 2004-04-30 ケンナメタル　インコーポレイテッド Cutting tool and method and apparatus for manufacturing the cutting tool
WO2009054400A1 (en) * 2007-10-26 2009-04-30 Sumitomo Electric Hardmetal Corp. Twist drill
KR101086094B1 (en) 2007-10-26 2011-11-25 스미또모 덴꼬오 하드메탈 가부시끼가이샤 Twist drill
US8545141B2 (en) 2007-10-26 2013-10-01 Sumitomo Electric Hardmetal Corp. Twist drill
WO2018221303A1 (en) * 2017-05-29 2018-12-06 京セラ株式会社 Drill and method for manufacturing cutting workpiece
CN110691665A (en) * 2017-05-29 2020-01-14 京瓷株式会社 Drill bit and manufacturing method of machined product
JPWO2018221303A1 (en) * 2017-05-29 2020-03-26 京セラ株式会社 Manufacturing method of drill and cut workpiece
US11872641B2 (en) 2017-05-29 2024-01-16 Kyocera Corporation Drill and method for manufacturing machined product

Also Published As

Publication number Publication date
JPH0333375Y2 (en) 1991-07-16

Similar Documents

Publication Publication Date Title
JPS634211U (en)
JPH0294016U (en)
JPS60183108U (en) double-blade drill
JPS6189418U (en)
JPS62172510U (en)
JPS61205719U (en)
JPS60194411U (en) double-blade drill
JPS62113912U (en)
JPH0340013U (en)
JPS62127709U (en)
JPH042505U (en)
JPH0171022U (en)
JPH0318918U (en)
JPS6299693U (en)
JPH0181209U (en)
JPS6313606U (en)
JPS644516U (en)
JPS59193613U (en) carbide drill
JPS6022212U (en) carbide drill
JPS6444102U (en)
JPS62153005U (en)
JPS61166714U (en)
JPS6341410U (en)
JPS5836017U (en) drilling tool
JPS62147413U (en)