JPS5840309U - drilling tool - Google Patents

drilling tool

Info

Publication number
JPS5840309U
JPS5840309U JP10981581U JP10981581U JPS5840309U JP S5840309 U JPS5840309 U JP S5840309U JP 10981581 U JP10981581 U JP 10981581U JP 10981581 U JP10981581 U JP 10981581U JP S5840309 U JPS5840309 U JP S5840309U
Authority
JP
Japan
Prior art keywords
cutting edge
tool
tool according
central cutting
central
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
JP10981581U
Other languages
Japanese (ja)
Other versions
JPS6142726Y2 (en
Inventor
国森　永年
Original Assignee
住友電気工業株式会社
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 住友電気工業株式会社 filed Critical 住友電気工業株式会社
Priority to JP10981581U priority Critical patent/JPS5840309U/en
Publication of JPS5840309U publication Critical patent/JPS5840309U/en
Application granted granted Critical
Publication of JPS6142726Y2 publication Critical patent/JPS6142726Y2/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 drawings]

第１図はこの考案の孔明は工具の一実施例を示−す側面
図、第２図は同上の正面図、第３図は同じり９０°回転
１−た状態の側面図、第１図はチップの斜視図である。 １・・・工具本体、２・・・ねじれ溝、４・・・千ツブ
、５・・・切刃、５ａ・・・中心切刃部、５ｂ・・・中
央切刃部、５Ｃ・・・外周切刃部、６・・・始端、７・
・・すくい面、８・・・逃げ面、９・・・凸形部、１０
・・・凹形部、１１・・・凸部。Fig. 1 is a side view showing an embodiment of the tool of this invention, Fig. 2 is a front view of the same as above, Fig. 3 is a side view of the same when rotated 90 degrees, Fig. 1 is a perspective view of the chip. DESCRIPTION OF SYMBOLS 1... Tool body, 2... Twisted groove, 4... Thousand knobs, 5... Cutting edge, 5a... Center cutting edge part, 5b... Center cutting edge part, 5C... Outer cutting edge portion, 6... Starting end, 7.
... Rake face, 8... Flank surface, 9... Convex portion, 10
... Concave portion, 11... Convex portion.

Claims (6)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）工具本体の先端部に一対のチップを各切刃の始端
部を回転中心近傍に位置せしめて互いに点対称に配置し
、上記切刃を連続した中心切刃部、中央切刃部及び外周
切刃部によって形成１．た孔明は工具において、上記中
央切刃部を中心切刃一部から連続し且つ回転方向に突き
出した凸形部と、その凸形部と上記外周切刃部に連続す
る凹形部によって形成したことを特徴とする孔明は工具
。(1) A pair of tips are arranged at the tip of the tool body, with the starting end of each cutting edge located near the center of rotation, and arranged symmetrically to each other, and the cutting edges are connected to a continuous central cutting edge, a central cutting edge, and a central cutting edge. Formed by the outer cutting edge 1. In the tool, the central cutting edge is formed by a convex part that is continuous from a part of the central cutting blade and protrudes in the rotational direction, and a concave part that is continuous with the convex part and the outer peripheral cutting edge. Komei is a tool. （２）上記中央切刃部の凹形部の底を円弧又は直線によ
って形成したことを特徴とする実用新案登録請求の範囲
第１項に記載の孔明は工具。(2) The tool according to claim 1, wherein the bottom of the concave portion of the central cutting edge is formed by a circular arc or a straight line. （３）上記切刃の軸方向のすくい角及び外周切刃部の半
径方向のすくい角を共に正に設定したことを特徴とする
実用新案登録請求の範囲第１項に記載の孔明は工具。(3) The tool according to claim 1, wherein the rake angle in the axial direction of the cutting edge and the rake angle in the radial direction of the outer peripheral cutting edge are both set to be positive. （４）上記各チップの軸方向のねじれ角を、工具本体の
ねじれ溝のねじれ角とはＳ゛等しく設定したことを特徴
とする実用新案登録請求の範囲第１項に記載の孔明は工
具。(4) The tool according to claim 1, wherein the helix angle of each tip in the axial direction is set to be equal to the helix angle S of the helix groove of the tool body. （５）上記各チップのすくい面の軸方向後部にチップブ
レーカ−用の凸部を設けたことを特徴とする実用新案登
録請求の範囲第１項に記載の孔明は工具。(5) The tool according to claim 1, which is a registered utility model, characterized in that a convex portion for a chip breaker is provided at the axial rear portion of the rake face of each of the chips. （６）上記各チップを着脱自在に取付けたことを特徴と
する実用新案登録請求の第１項に記載の孔明は工具。(6) The tool according to item 1 of the utility model registration claim, characterized in that each of the tips described above is detachably attached.
JP10981581U 1981-07-21 1981-07-21 drilling tool Granted JPS5840309U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10981581U JPS5840309U (en) 1981-07-21 1981-07-21 drilling tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10981581U JPS5840309U (en) 1981-07-21 1981-07-21 drilling tool

Publications (2)

Publication Number Publication Date
JPS5840309U true JPS5840309U (en) 1983-03-16
JPS6142726Y2 JPS6142726Y2 (en) 1986-12-04

Family

ID=29904178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10981581U Granted JPS5840309U (en) 1981-07-21 1981-07-21 drilling tool

Country Status (1)

Country Link
JP (1) JPS5840309U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60114407A (en) * 1983-11-24 1985-06-20 Sumitomo Electric Ind Ltd Drill
JP4676655B2 (en) * 2001-07-19 2011-04-27 ユニタック株式会社 Throwaway drill for deep hole cutting

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541242U (en) * 1978-09-06 1980-03-17

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541242B2 (en) * 1974-02-28 1980-10-23

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5541242U (en) * 1978-09-06 1980-03-17

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60114407A (en) * 1983-11-24 1985-06-20 Sumitomo Electric Ind Ltd Drill
JP4676655B2 (en) * 2001-07-19 2011-04-27 ユニタック株式会社 Throwaway drill for deep hole cutting

Also Published As

Publication number Publication date
JPS6142726Y2 (en) 1986-12-04

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