JPS59143618U - 2-blade gun drill - Google Patents
2-blade gun drillInfo
- Publication number
- JPS59143618U JPS59143618U JP3611883U JP3611883U JPS59143618U JP S59143618 U JPS59143618 U JP S59143618U JP 3611883 U JP3611883 U JP 3611883U JP 3611883 U JP3611883 U JP 3611883U JP S59143618 U JPS59143618 U JP S59143618U
- Authority
- JP
- Japan
- Prior art keywords
- gun drill
- center
- tip
- blade
- cutter
- 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
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
第1図ないし第3図は従来の2枚刃ガンドリルの一例を
示し、第1図はその一部を断面にして示す側面図、第2
図は第1図の■矢視拡大図、第3図は第2図の■矢視図
、第4図ないし第6図はこの考案の一実施例を示し、第
4図はその一部を断面にして示す側面図、第5図は第4
図の■矢視拡大図、第6図は第5図の■矢視図である。
11・・・・・・ガンドリル本体、12・・・・・・ム
クチップ(切刃チップ)、13・・・・・・切刃、13
a・・・・・・内切、13b・・・・・・外刃、O・・
・・・・回転中心。Figures 1 to 3 show an example of a conventional two-flute gun drill.
The figure is an enlarged view in the direction of the ■ arrow in Figure 1, Figure 3 is an enlarged view in the direction of the ■ arrow in Figure 2, Figures 4 to 6 show one embodiment of this invention, and Figure 4 shows a part of it. A side view shown in cross section, Figure 5 is the 4th
6 is an enlarged view of FIG. 5 in the direction of the ■ arrow. 11... Gun drill body, 12... Muku tip (cutting tip), 13... Cutting blade, 13
a...Inner cutter, 13b...Outer cutter, O...
····Rotation center.
Claims (1)
け、この切刃チップの先端部に2つの切刃を形成してな
る2枚刃ガンドリルにおいて、前記各切刃はそれぞれ、
回転中心近傍を切削する内刃と、外周部を切削する外刃
とを有しており、前記内刃を芯上りに配置するとともに
、前記外刃を芯下がりにまたは回転中心を通る直線上に
配置したことを特徴とする2枚刃ガンドリル。A two-blade gun drill in which a cutting tip made of cemented carbide is provided at the tip of the gun drill body, and two cutting edges are formed at the tip of the cutting tip, each of the cutting edges being:
It has an inner cutter that cuts near the center of rotation and an outer cutter that cuts the outer peripheral part, and the inner cutter is arranged above the center, and the outer cutter is arranged below the center or on a straight line passing through the center of rotation. A two-blade gun drill that is characterized by its arrangement.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3611883U JPS59143618U (en) | 1983-03-12 | 1983-03-12 | 2-blade gun drill |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3611883U JPS59143618U (en) | 1983-03-12 | 1983-03-12 | 2-blade gun drill |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS59143618U true JPS59143618U (en) | 1984-09-26 |
JPS6312892Y2 JPS6312892Y2 (en) | 1988-04-13 |
Family
ID=30166799
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3611883U Granted JPS59143618U (en) | 1983-03-12 | 1983-03-12 | 2-blade gun drill |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59143618U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63102814A (en) * | 1986-10-21 | 1988-05-07 | Mitsubishi Metal Corp | Two blade gun drill |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5836018U (en) * | 1981-09-04 | 1983-03-09 | 株式会社日本治金 | Drill for deep hole cutting |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5836018B2 (en) * | 1981-04-06 | 1983-08-06 | 日立化成工業株式会社 | Manufacturing method of heat-resistant resin |
-
1983
- 1983-03-12 JP JP3611883U patent/JPS59143618U/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5836018U (en) * | 1981-09-04 | 1983-03-09 | 株式会社日本治金 | Drill for deep hole cutting |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63102814A (en) * | 1986-10-21 | 1988-05-07 | Mitsubishi Metal Corp | Two blade gun drill |
Also Published As
Publication number | Publication date |
---|---|
JPS6312892Y2 (en) | 1988-04-13 |
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