JPH0428954U - - Google Patents
Info
- Publication number
- JPH0428954U JPH0428954U JP6770890U JP6770890U JPH0428954U JP H0428954 U JPH0428954 U JP H0428954U JP 6770890 U JP6770890 U JP 6770890U JP 6770890 U JP6770890 U JP 6770890U JP H0428954 U JPH0428954 U JP H0428954U
- Authority
- JP
- Japan
- Prior art keywords
- grindstone
- core drill
- tip
- peripheral surface
- axial direction
- 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
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Drilling Tools (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Description
第１図はコアドリルの要部斜視図、第２図は同
じく正面図、第３図は従来のコアドリルの斜視図
、第４図は従来のコアドリルの使用状態断面図で
ある。
１……シヤンク、２……砥石、３……ノツチ、
４……突条、５……コア。
FIG. 1 is a perspective view of essential parts of a core drill, FIG. 2 is a front view, FIG. 3 is a perspective view of a conventional core drill, and FIG. 4 is a sectional view of a conventional core drill in use. 1...Shayank, 2...Whetstone, 3...Notsuchi,
4... protrusion, 5... core.
Claims (1)
したコアドリルにおいて、該砥石が、内周面に軸
方向に沿つた突条を備えていることを特徴とする
コアドリル。 1. A core drill having a hollow cylindrical grindstone fixed to the tip of a hollow shank, characterized in that the grindstone has a protrusion extending along the axial direction on its inner peripheral surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6770890U JPH0428954U (en) | 1990-06-26 | 1990-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6770890U JPH0428954U (en) | 1990-06-26 | 1990-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0428954U true JPH0428954U (en) | 1992-03-09 |
Family
ID=31601521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6770890U Pending JPH0428954U (en) | 1990-06-26 | 1990-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0428954U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010247378A (en) * | 2009-04-13 | 2010-11-04 | Consec Corp | Core bit |
| JP2013067023A (en) * | 2011-09-20 | 2013-04-18 | Goei Seisakusho:Kk | Drilling tool |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0219421B2 (en) * | 1985-06-20 | 1990-05-01 | Nippon Electron Optics Lab |
-
1990
- 1990-06-26 JP JP6770890U patent/JPH0428954U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0219421B2 (en) * | 1985-06-20 | 1990-05-01 | Nippon Electron Optics Lab |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010247378A (en) * | 2009-04-13 | 2010-11-04 | Consec Corp | Core bit |
| JP2013067023A (en) * | 2011-09-20 | 2013-04-18 | Goei Seisakusho:Kk | Drilling tool |