JPS6016U - Drill - Google Patents
DrillInfo
- 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
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)
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.
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)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5555311U (en) * | 1978-10-11 | 1980-04-15 | ||
JPS56121570U (en) * | 1980-02-20 | 1981-09-16 |
-
1983
- 1983-06-15 JP JP9133683U patent/JPS6016U/en active Granted
Patent Citations (2)
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)
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 |
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