JPS5950619U - Drill - Google Patents

Drill

Info

Publication number
JPS5950619U
JPS5950619U JP14571382U JP14571382U JPS5950619U JP S5950619 U JPS5950619 U JP S5950619U JP 14571382 U JP14571382 U JP 14571382U JP 14571382 U JP14571382 U JP 14571382U JP S5950619 U JPS5950619 U JP S5950619U
Authority
JP
Japan
Prior art keywords
cutting edge
drill
groove
front side
flute
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
JP14571382U
Other languages
Japanese (ja)
Inventor
大川　正利
野本　金男
Original Assignee
東芝タンガロイ株式会社
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 東芝タンガロイ株式会社 filed Critical 東芝タンガロイ株式会社
Priority to JP14571382U priority Critical patent/JPS5950619U/en
Publication of JPS5950619U publication Critical patent/JPS5950619U/en
Pending legal-status Critical Current

Links

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 drawings]

第１図は、本考案ドリルの一実施例を示す正面図、第２
図は、刃先部分の一部拡大正面図、第３図はその下面図
、第４図は、変形例を示す一部拡大正面図、第５図はそ
の下面図である。 ２ａ・・・本体、３・・・フルート溝、４，５・・・切
刃稜、６・・・円弧溝。Fig. 1 is a front view showing one embodiment of the drill of the present invention;
3 is a partially enlarged front view of the cutting edge portion, FIG. 3 is a bottom view thereof, FIG. 4 is a partially enlarged front view showing a modification, and FIG. 5 is a bottom view thereof. 2a...Main body, 3...Flute groove, 4, 5...Cutting edge ridge, 6...Circular groove.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 棒状をなす本体２ａの先端からは、１対のねじれ状又は
ストレート状のフルート溝３が形成されるとともに、正
面側の切刃稜４および外周側の切刃稜５が備えられ、ま
たその他端部には柄部分、　　２ｂが形成されるように
したドリルにおいて、前記フルート溝３の満面には、回
転対称位置で正面側の切刃稜４が一部切欠されるように
した細１］状をなす軸方向の円弧溝６が形成され、その
円弧溝６の半径Ｒが刃先直ｑＤに対して、Ｄ／２〜Ｄ／
７の範囲から選択されるようになっていることを特徴と
するドリル。A pair of twisted or straight flute grooves 3 are formed from the tip of the rod-shaped main body 2a, and a cutting edge 4 on the front side and a cutting edge 5 on the outer peripheral side are provided. In the drill, a handle portion 2b is formed in the drill part, and the full surface of the flute groove 3 has a narrow 1] shape in which the cutting edge 4 on the front side is partially cut out at a rotationally symmetrical position. An axial circular arc groove 6 is formed, and the radius R of the circular groove 6 is D/2 to D/ with respect to the cutting edge straightness qD.
A drill characterized in that a selection is made from a range of 7.
JP14571382U 1982-09-28 1982-09-28 Drill Pending JPS5950619U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14571382U JPS5950619U (en) 1982-09-28 1982-09-28 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14571382U JPS5950619U (en) 1982-09-28 1982-09-28 Drill

Publications (1)

Publication Number Publication Date
JPS5950619U true JPS5950619U (en) 1984-04-03

Family

ID=30324561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14571382U Pending JPS5950619U (en) 1982-09-28 1982-09-28 Drill

Country Status (1)

Country Link
JP (1) JPS5950619U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009101460A (en) * 2007-10-23 2009-05-14 Omi Kogyo Co Ltd Cutting tool
CN103025461A (en) * 2010-05-27 2013-04-03 京瓷株式会社 End mill

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009101460A (en) * 2007-10-23 2009-05-14 Omi Kogyo Co Ltd Cutting tool
CN103025461A (en) * 2010-05-27 2013-04-03 京瓷株式会社 End mill
CN103025461B (en) * 2010-05-27 2015-05-13 京瓷株式会社 End mill

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