JPS5863910U - Single-blade drilling tool - Google Patents

Single-blade drilling tool

Info

Publication number
JPS5863910U
JPS5863910U JP15675081U JP15675081U JPS5863910U JP S5863910 U JPS5863910 U JP S5863910U JP 15675081 U JP15675081 U JP 15675081U JP 15675081 U JP15675081 U JP 15675081U JP S5863910 U JPS5863910 U JP S5863910U
Authority
JP
Japan
Prior art keywords
drilling tool
blade drilling
curved section
blade
smooth
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
JP15675081U
Other languages
Japanese (ja)
Other versions
JPS6135371Y2 (en
Inventor
能上　進
高田　義人
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 JP15675081U priority Critical patent/JPS5863910U/en
Publication of JPS5863910U publication Critical patent/JPS5863910U/en
Application granted granted Critical
Publication of JPS6135371Y2 publication Critical patent/JPS6135371Y2/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]

第１図は従来のガンドリルの一例を示す先端視図、第２
図はその側面図、第３図は先に提案したガンドリルの一
例を示す先端視図、第４図はその側面図、第５図は本考
案の一実施例を示す先端視図、第６図はその側面図、第
７図は本考案の他の実施例を示す側面図である。 ２１・・・・・・切刃、２２・・・・・・凸曲線部、２
３・・・・・・凹曲線部、２５・・・・・・切屑排出溝
、３２・・・・・・油孔（流通孔）、０・・・・・・回
転中心。Figure 1 is a tip view showing an example of a conventional gun drill;
Figure 3 is a side view of the gun drill, Figure 3 is a view from the tip showing an example of the previously proposed gun drill, Figure 4 is a side view thereof, Figure 5 is a view from the tip showing an embodiment of the present invention, and Figure 6. is a side view thereof, and FIG. 7 is a side view showing another embodiment of the present invention. 21... Cutting edge, 22... Convex curved portion, 2
3...Concave curved portion, 25...Chip discharge groove, 32...Oil hole (flow hole), 0...Rotation center.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 一枚の切刃２１とそれに対応した切屑排出溝２５及び切
削油の流通孔３２′とをもつ一枚刃穴明は工具において
、前記切刃２１は、回転中心θ側の滑らかな凸曲線部２
２と、外周側の滑らかな凹曲線部２３とからなり、しか
も前記凸曲線部２２は前記凹曲線部２３に対して切削回
転方向に先行突出していることを特徴とする一枚刃穴明
は工具。In a single-blade drilling tool, the cutting blade 21 has a smooth convex curved portion on the side of the rotation center θ. 2
2, and a smooth concave curved section 23 on the outer circumferential side, and the convex curved section 22 projects ahead of the concave curved section 23 in the cutting rotation direction. tool.
JP15675081U 1981-10-21 1981-10-21 Single-blade drilling tool Granted JPS5863910U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15675081U JPS5863910U (en) 1981-10-21 1981-10-21 Single-blade drilling tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15675081U JPS5863910U (en) 1981-10-21 1981-10-21 Single-blade drilling tool

Publications (2)

Publication Number Publication Date
JPS5863910U true JPS5863910U (en) 1983-04-28
JPS6135371Y2 JPS6135371Y2 (en) 1986-10-15

Family

ID=29949283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15675081U Granted JPS5863910U (en) 1981-10-21 1981-10-21 Single-blade drilling tool

Country Status (1)

Country Link
JP (1) JPS5863910U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0470418U (en) * 1990-10-25 1992-06-22

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541242U (en) * 1978-09-06 1980-03-17
JPS5611021U (en) * 1979-07-04 1981-01-30

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541242B2 (en) * 1974-02-28 1980-10-23
JPS5419215A (en) * 1977-07-12 1979-02-13 Matsushita Electric Works Ltd Fittings for eaves trough hook

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541242U (en) * 1978-09-06 1980-03-17
JPS5611021U (en) * 1979-07-04 1981-01-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0470418U (en) * 1990-10-25 1992-06-22

Also Published As

Publication number Publication date
JPS6135371Y2 (en) 1986-10-15

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