JPH0387518U - - Google Patents
Info
- Publication number
- JPH0387518U JPH0387518U JP14691589U JP14691589U JPH0387518U JP H0387518 U JPH0387518 U JP H0387518U JP 14691589 U JP14691589 U JP 14691589U JP 14691589 U JP14691589 U JP 14691589U JP H0387518 U JPH0387518 U JP H0387518U
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- center
- chisel
- flank
- face
- 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.)
- Pending
Links
- 238000005553 drilling Methods 0.000 claims 1
Landscapes
- Drilling Tools (AREA)
Description
図は、本考案になるドリルを示したもので、第
１図は該ドリルの正面図、第２図は第１図の要部
を拡大した図であつて、そのａは正面図、ｂはａ
の側面図、第３図は第２図の底面図であつて、そ
のａは同ドリルの軸線方向先端視図、ｂはａの側
面図などである。
１……ドリル、１１……チゼル、１２ａ，１２
ｂ……中心部切刃、１３ａ，１３ｂ……外周側切
刃、１４，１５……すくい面、１６ａ，１６ｂ…
…第１逃げ面、１７ａ，１７ｂ……第２逃げ面。
The figures show a drill according to the present invention, and Fig. 1 is a front view of the drill, and Fig. 2 is an enlarged view of the main part of Fig. 1, in which a is a front view and b is an enlarged view. a
FIG. 3 is a bottom view of FIG. 2, in which a is a view of the tip of the drill in the axial direction, and b is a side view of a. 1...Drill, 11...Chisel, 12a, 12
b...Central cutting edge, 13a, 13b...Outer cutting edge, 14, 15...Rake face, 16a, 16b...
...first flank, 17a, 17b...second flank.
Claims (1)
形成し、このチゼルを基準に中心部切刃と外周側
切刃とが設けられ、該中心部切刃のすくい面を負
角を有して形成させるのと共に、前記各切刃の逃
げ面を少なくとも第１逃げ面と第２逃げ面の複数
面としたことを特徴とする穿孔工具。 A chisel with a width of 0.1 to 1.0 mm is formed at the center of the tool, and a center cutting edge and an outer cutting edge are provided based on this chisel, and the rake face of the center cutting edge is set at a negative angle. The drilling tool is characterized in that each of the cutting edges has a plurality of flank surfaces including at least a first flank face and a second flank face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14691589U JPH0387518U (en) | 1989-12-19 | 1989-12-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14691589U JPH0387518U (en) | 1989-12-19 | 1989-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0387518U true JPH0387518U (en) | 1991-09-05 |
Family
ID=31693452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14691589U Pending JPH0387518U (en) | 1989-12-19 | 1989-12-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0387518U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010115753A (en) * | 2008-11-13 | 2010-05-27 | Nisshin Kogu Kk | Drill |
| JP2014113661A (en) * | 2012-12-10 | 2014-06-26 | Mitsubishi Materials Corp | Drill |
-
1989
- 1989-12-19 JP JP14691589U patent/JPH0387518U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010115753A (en) * | 2008-11-13 | 2010-05-27 | Nisshin Kogu Kk | Drill |
| JP2014113661A (en) * | 2012-12-10 | 2014-06-26 | Mitsubishi Materials Corp | Drill |
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