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JPS59193613U - carbide drill - Google Patents

carbide drill

Info

Publication number
JPS59193613U
JPS59193613U JP8260083U JP8260083U JPS59193613U JP S59193613 U JPS59193613 U JP S59193613U JP 8260083 U JP8260083 U JP 8260083U JP 8260083 U JP8260083 U JP 8260083U JP S59193613 U JPS59193613 U JP S59193613U
Authority
JP
Japan
Prior art keywords
wall surface
tip
chip discharge
discharge groove
drill
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
JP8260083U
Other languages
Japanese (ja)
Other versions
JPS6317604Y2 (en
Inventor
真司 黒田
細野　秀治
Original Assignee
三菱マテリアル株式会社
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 三菱マテリアル株式会社 filed Critical 三菱マテリアル株式会社
Priority to JP8260083U priority Critical patent/JPS59193613U/en
Publication of JPS59193613U publication Critical patent/JPS59193613U/en
Application granted granted Critical
Publication of JPS6317604Y2 publication Critical patent/JPS6317604Y2/ja
Granted legal-status Critical Current

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  • Drilling Tools (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

添付した第１図および第２図はそれぞれこの考案の一実
施例を示し、Ａはその底面親図、Ｂはその一部省略側面
図である。 １・・・・・・ドリル本体、２・・・・・・切屑排出溝
、３・・・・・・切刃チップ、４・・・・・・切刃、４
ａ・・・・・・内端縁、５・・・・・・溝、０・・・・
・・回転中心軸線。The attached FIGS. 1 and 2 each show an embodiment of this invention, with A being a bottom view and B being a partially omitted side view. 1... Drill body, 2... Chip discharge groove, 3... Cutting blade tip, 4... Cutting blade, 4
a...Inner edge, 5...Groove, 0...
...Rotation center axis.

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外周に切屑排出溝を設け、この切屑
排出溝の回転方向を向く壁面の先端部に超硬合金製の切
刃チップを設け、この切刃チップの先端部に内端縁が前
記ドリル本体の回転中心軸縁から０．１７７＋７７！〜
１．２５Ｔｆｒｌｎ離された切刃を形成してなる超硬ド
リルにおいて、前記切屑排出溝の底部壁面の少なくとも
先端部に、その部分の壁面の曲率半径より小さい曲率半
径の壁面を有する溝を形成したことを特徴とする超硬ド
リル。A chip discharge groove is provided on the outer periphery of the tip of the drill body, and a cutting tip made of cemented carbide is provided at the tip of the wall surface facing the rotation direction of the chip discharge groove. 0.177+77 from the rotation center axis edge of the drill body! ~
In a carbide drill having cutting blades spaced apart by 1.25 Tfrln, a groove having a wall surface with a radius of curvature smaller than the radius of curvature of the wall surface of that portion is formed at least at the tip of the bottom wall surface of the chip discharge groove. A carbide drill characterized by:
JP8260083U 1983-05-31 1983-05-31 carbide drill Granted JPS59193613U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8260083U JPS59193613U (en) 1983-05-31 1983-05-31 carbide drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8260083U JPS59193613U (en) 1983-05-31 1983-05-31 carbide drill

Publications (2)

Publication Number Publication Date
JPS59193613U true JPS59193613U (en) 1984-12-22
JPS6317604Y2 JPS6317604Y2 (en) 1988-05-18

Family

ID=30212555

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8260083U Granted JPS59193613U (en) 1983-05-31 1983-05-31 carbide drill

Country Status (1)

Country Link
JP (1) JPS59193613U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS641811U (en) * 1987-06-22 1989-01-09

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414089A (en) * 1977-07-05 1979-02-01 Caterpillar Mitsubishi Ltd Drill with chip breaker for high hardness
JPS54102682A (en) * 1978-01-31 1979-08-13 Riyousuke Hosoi Spiralledge drill without chisel
JPS5652110A (en) * 1979-10-02 1981-05-11 Mitsubishi Metal Corp Rotary cutting tool with bottom blade

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414089A (en) * 1977-07-05 1979-02-01 Caterpillar Mitsubishi Ltd Drill with chip breaker for high hardness
JPS54102682A (en) * 1978-01-31 1979-08-13 Riyousuke Hosoi Spiralledge drill without chisel
JPS5652110A (en) * 1979-10-02 1981-05-11 Mitsubishi Metal Corp Rotary cutting tool with bottom blade

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS641811U (en) * 1987-06-22 1989-01-09

Also Published As

Publication number Publication date
JPS6317604Y2 (en) 1988-05-18

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