JPS6015U - Drill - Google Patents

Drill

Info

Publication number
JPS6015U
JPS6015U JP9133583U JP9133583U JPS6015U JP S6015 U JPS6015 U JP S6015U JP 9133583 U JP9133583 U JP 9133583U JP 9133583 U JP9133583 U JP 9133583U JP S6015 U JPS6015 U JP S6015U
Authority
JP
Japan
Prior art keywords
drill
cutting edge
center
main cutting
tip
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
JP9133583U
Other languages
Japanese (ja)
Other versions
JPS6125935Y2 (en
Inventor
博 下村
高谷　末治
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 JP9133583U priority Critical patent/JPS6015U/en
Publication of JPS6015U publication Critical patent/JPS6015U/en
Application granted granted Critical
Publication of JPS6125935Y2 publication Critical patent/JPS6125935Y2/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) [Abstract] 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図は従来一般のツイストドリルの側面図、第２図乃
至第４図はこの考案の一実施例を示し、第２図は側面図
、第３図は拡大底面図、第４図は刃先部分の拡大側面図
、第５図及び第６図はこの考案の他の実施例を示し、第
５図は拡大底面親図、第６図は刃先部分の拡大側面図で
ある。 １・・・本体、３，４・・・切りくず排出溝、７，８・
・・　　□主切刃、９．１０・・・中心切刃、１５・・
・溝。Figure 1 is a side view of a conventional twist drill, Figures 2 to 4 show an embodiment of this invention, Figure 2 is a side view, Figure 3 is an enlarged bottom view, and Figure 4 is the cutting edge. 5 and 6 show other embodiments of the invention, FIG. 5 being an enlarged bottom view, and FIG. 6 being an enlarged side view of the cutting edge. 1... Main body, 3, 4... Chip discharge groove, 7, 8.
... □Main cutting edge, 9.10... Center cutting edge, 15...
·groove.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ドリル本体に２つの切りくず排出溝がストレートに形成
され、ドリルの先端に、側面視にて切刃稜線がドリル軸
線とほぼ直角を成す２つの主切刃が形成されると共に、
ドリルの先端に、前記主切刃のすくい面とほぼ直角を成
す方向に延在する断面Ｖ字状の溝がその中心線をドリル
中心からずらして形成され、この溝の傾斜壁面と前記す
くい面との稜部に、前記主切刃から軸方向後方に折れて
延在する２つの中心切刃が形成されて、その内の一方の
中心切刃がドリル中心に寄って位置しかつ他方の中心切
刃がドリル中心から離れて位置していることを特徴とす
るドリル。Two straight chip evacuation grooves are formed in the drill body, and two main cutting edges are formed at the tip of the drill, the cutting edge lines of which are substantially perpendicular to the drill axis when viewed from the side.
A groove with a V-shaped cross section extending in a direction substantially perpendicular to the rake surface of the main cutting edge is formed at the tip of the drill with its center line offset from the center of the drill, and the inclined wall surface of this groove and the rake surface Two central cutting edges are formed on the ridge portion of the main cutting edge to bend and extend axially rearward from the main cutting edge, and one of the central cutting edges is located close to the center of the drill, and the other center cutting edge is located close to the center of the drill. A drill characterized in that the cutting edge is located away from the center of the drill.
JP9133583U 1983-06-15 1983-06-15 Drill Granted JPS6015U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9133583U JPS6015U (en) 1983-06-15 1983-06-15 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9133583U JPS6015U (en) 1983-06-15 1983-06-15 Drill

Publications (2)

Publication Number Publication Date
JPS6015U true JPS6015U (en) 1985-01-05
JPS6125935Y2 JPS6125935Y2 (en) 1986-08-05

Family

ID=30221312

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9133583U Granted JPS6015U (en) 1983-06-15 1983-06-15 Drill

Country Status (1)

Country Link
JP (1) JPS6015U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6249804A (en) * 1985-08-30 1987-03-04 株式会社資生堂 Cosmetic brush and its production
JP2008268640A (en) * 2007-04-23 2008-11-06 Optrex Corp Method for manufacturing display panel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6249804A (en) * 1985-08-30 1987-03-04 株式会社資生堂 Cosmetic brush and its production
JPH0550282B2 (en) * 1985-08-30 1993-07-28 Shiseido Co Ltd
JP2008268640A (en) * 2007-04-23 2008-11-06 Optrex Corp Method for manufacturing display panel

Also Published As

Publication number Publication date
JPS6125935Y2 (en) 1986-08-05

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