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JPS6029017U - carbide drill - Google Patents

carbide drill

Info

Publication number
JPS6029017U
JPS6029017U JP11677483U JP11677483U JPS6029017U JP S6029017 U JPS6029017 U JP S6029017U JP 11677483 U JP11677483 U JP 11677483U JP 11677483 U JP11677483 U JP 11677483U JP S6029017 U JPS6029017 U JP S6029017U
Authority
JP
Japan
Prior art keywords
cutting
tip
blade
divided
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.)
Pending
Application number
JP11677483U
Other languages
Japanese (ja)
Inventor
千葉　博一
糟谷　博
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 JP11677483U priority Critical patent/JPS6029017U/en
Publication of JPS6029017U publication Critical patent/JPS6029017U/en
Pending 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 drawings]

添付図は、この考案の一実施例を示し、第１図はその底
面親図、第２図はその一部省略側面図である。 １・・・ドリル本体、２・・・切刃チップ、３・・・切
刃、３ａ・・・内端縁、３ｂ・・・内刃（分割刃）、３
ｃ・・・外刃（分割刃）、０・・・回転中心軸線。The attached drawings show an embodiment of this invention, with FIG. 1 being a bottom view and FIG. 2 being a partially omitted side view. DESCRIPTION OF SYMBOLS 1... Drill body, 2... Cutting blade tip, 3... Cutting blade, 3a... Inner edge, 3b... Inner blade (split blade), 3
c... Outer blade (split blade), 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に超硬合金製の切刃チップを固定し
、この切刃チップの先端部に１、先端角を、　　゛有し
、かつ内端縁が前記２ドリル本体の回転中心軸線から０
，１ｍ〜１．２５ｍｍ離れた切刃を形成してなる超硬ド
リルにおいて、前記切刃を複数に分割してそれぞれ分割
刃とし、外周側の分割刃竺前記ドリル本体の回転中心軸
線方向後方へ後退させて内周側の分割刃との間に、前記
切刃の１刃当たりの切削量より大きな段差を形成したこ
とを特徴とする超硬ドリル。　　　　　　　　　　　　
　　　　　　・−A cutting tip made of cemented carbide is fixed to the tip of the drill body, and the tip of the cutting tip has a tip angle of 1, and the inner edge thereof is from the rotation center axis of the drill body. 0
, a carbide drill in which cutting edges are formed at a distance of 1 m to 1.25 mm, the cutting edge is divided into a plurality of divided blades, and the outer peripheral side of the divided blade is rearward in the direction of the rotation center axis of the drill body. A carbide drill characterized in that a step is formed between the divided blade on the inner circumferential side by retreating and the cutting amount larger than the amount of cutting per blade of the cutting blade.
・−
JP11677483U 1983-07-27 1983-07-27 carbide drill Pending JPS6029017U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11677483U JPS6029017U (en) 1983-07-27 1983-07-27 carbide drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11677483U JPS6029017U (en) 1983-07-27 1983-07-27 carbide drill

Publications (1)

Publication Number Publication Date
JPS6029017U true JPS6029017U (en) 1985-02-27

Family

ID=30269065

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11677483U Pending JPS6029017U (en) 1983-07-27 1983-07-27 carbide drill

Country Status (1)

Country Link
JP (1) JPS6029017U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5439290A (en) * 1977-09-03 1979-03-26 Mitsubishi Metal Corp Boring tool
JPS5652110A (en) * 1979-10-02 1981-05-11 Mitsubishi Metal Corp Rotary cutting tool with bottom blade

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5439290A (en) * 1977-09-03 1979-03-26 Mitsubishi Metal Corp Boring tool
JPS5652110A (en) * 1979-10-02 1981-05-11 Mitsubishi Metal Corp Rotary cutting tool with bottom blade

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