JPS6016U - Drill - Google Patents

Drill

Info

Publication number
JPS6016U
JPS6016U JP9133683U JP9133683U JPS6016U JP S6016 U JPS6016 U JP S6016U JP 9133683 U JP9133683 U JP 9133683U JP 9133683 U JP9133683 U JP 9133683U JP S6016 U JPS6016 U JP S6016U
Authority
JP
Japan
Prior art keywords
drill
cutting edge
approximately
center
axis
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
JP9133683U
Other languages
Japanese (ja)
Other versions
JPS6125936Y2 (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 JP9133683U priority Critical patent/JPS6016U/en
Publication of JPS6016U publication Critical patent/JPS6016U/en
Application granted granted Critical
Publication of JPS6125936Y2 publication Critical patent/JPS6125936Y2/ja
Granted legal-status Critical Current

Links

Landscapes

  • 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]

第１図は従来の一般のツイストドリルの側面図、第２図
乃至第５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図は第４図のＶ−Ｖ線に沿う部分断面図である
。 １・・・本体、３・・・切りくず排出溝、６・・・主切
刃、７・・・中心切刃、８・・・逃げ面。Fig. 1 is a side view of a conventional general twist drill, Figs. 2 to 5 show an embodiment of this invention, Fig. 2 is a side view, Fig. 3 is an enlarged bottom view, and Fig. 4 is an enlarged bottom view. FIG. 5 is an enlarged side view of the cutting edge portion, and is a partial sectional view taken along line V-V in FIG. 4. 1... Main body, 3... Chip discharge groove, 6... Main cutting edge, 7... Center cutting edge, 8... Flank surface.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] ドリル本体の軸直角断面中のほぼ半分の領域が切り欠か
れて半月状の切りべず排出溝が形成され、ドリルの先端
に芯上がりかつ側面視にて切刃稜線がドリル軸線とほぼ
直角を成す主切刃が形成され、この主切刃のドリル中心
寄りにおけるドリル半径の略１／３部分は、逃げ面側に
切り込まれて中心切刃が形成されていることを特徴とす
るドリル。Approximately half of the cross section perpendicular to the axis of the drill body is cut out to form a half-moon-shaped chip discharge groove, and the cutting edge line is approximately perpendicular to the drill axis when viewed from the side when the core is raised at the tip of the drill. A drill characterized in that a main cutting edge is formed, and approximately ⅓ of the drill radius of the main cutting edge near the center of the drill is cut into the flank side to form a center cutting edge.
JP9133683U 1983-06-15 1983-06-15 Drill Granted JPS6016U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9133683U JPS6016U (en) 1983-06-15 1983-06-15 Drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9133683U JPS6016U (en) 1983-06-15 1983-06-15 Drill

Publications (2)

Publication Number Publication Date
JPS6016U true JPS6016U (en) 1985-01-05
JPS6125936Y2 JPS6125936Y2 (en) 1986-08-05

Family

ID=30221313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9133683U Granted JPS6016U (en) 1983-06-15 1983-06-15 Drill

Country Status (1)

Country Link
JP (1) JPS6016U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6312315U (en) * 1986-07-09 1988-01-27
JP2012200834A (en) * 2011-03-28 2012-10-22 Carbide Internatl Co Ltd Drill bit structure of sigle-edged blade

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555311U (en) * 1978-10-11 1980-04-15
JPS56121570U (en) * 1980-02-20 1981-09-16

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5555311U (en) * 1978-10-11 1980-04-15
JPS56121570U (en) * 1980-02-20 1981-09-16

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6312315U (en) * 1986-07-09 1988-01-27
JPH0525540Y2 (en) * 1986-07-09 1993-06-28
JP2012200834A (en) * 2011-03-28 2012-10-22 Carbide Internatl Co Ltd Drill bit structure of sigle-edged blade

Also Published As

Publication number Publication date
JPS6125936Y2 (en) 1986-08-05

Similar Documents

Publication Publication Date Title
JPS6016U (en) Drill
JPS6045607U (en) stepped drill
JPS59171010U (en) carbide drill
JPS6015U (en) Drill
JPS6066410U (en) carbide drill
JPS60183108U (en) double-blade drill
JPS60109712U (en) end mill
JPS6039429U (en) drill tap
JPS60194410U (en) double-blade drill
JPS6094412U (en) gun drill
JPS59176712U (en) solid carbide end mill
JPS6091302U (en) Throw-away tip for cutting
JPS5950619U (en) Drill
JPS58113403U (en) Throwaway tip
JPS58140058U (en) Cross screwdriver and bit
JPS59191214U (en) single blade end mill
JPS6017911U (en) Drill
JPS60142011U (en) Drill
JPS5863911U (en) Carbide drilling tool
JPS59148211U (en) Cutting tools
JPS5956291U (en) Structure of diamond bit cutting edge
JPS58146613U (en) Drill
JPS6135711U (en) Drill
JPS59132714U (en) Drilling tool with deburring
JPS5815370U (en) split board