JPH0445611U - - Google Patents
Info
- Publication number
- JPH0445611U JPH0445611U JP8664790U JP8664790U JPH0445611U JP H0445611 U JPH0445611 U JP H0445611U JP 8664790 U JP8664790 U JP 8664790U JP 8664790 U JP8664790 U JP 8664790U JP H0445611 U JPH0445611 U JP H0445611U
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- cutting
- drill
- flat surface
- longitudinal 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.)
- Granted
Links
- 239000010730 cutting oil Substances 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims 1
Landscapes
- Drilling Tools (AREA)
Description
図は本考案のドリルの一実施例に係わるもので
、第１図はドリルの斜視図、第２図は刃部の平面
図、第３図は角度を９０°違えて示す刃部の平面
図、第４図は第２図のＸ−Ｘ線拡大断面図である
。
２……刃部、５，５……平坦面部、７，７……
切屑排出溝、９……切削油送込み溝。
The figures relate to an embodiment of the drill of the present invention, in which Fig. 1 is a perspective view of the drill, Fig. 2 is a plan view of the blade, and Fig. 3 is a plan view of the blade shown at a 90° angle. , FIG. 4 is an enlarged sectional view taken along the line X--X of FIG. 2. 2...blade part, 5,5...flat surface part, 7,7...
Chip discharge groove, 9...cutting oil feed groove.
Claims (1)
手方向に沿つて平行な平坦面部を形成すると共に
、該各平坦面部間に横断面Ｖ字形の切屑排出溝を
同じく刃先から長手方向に沿つて刻設したドリル
において、前記平坦面部表面に刃先から適宜長さ
に亘りドリルの回転方向に対し刃先方向に進む螺
旋状の切削油送込み溝を複数個設けて該各切削油
送込み溝により切削油を常に刃先側へ強制的に送
り出すようにしたことを特徴とするドリル。 Parallel flat surface portions are formed along the longitudinal direction from the cutting edge on opposing front and back positions of the outer surface of the blade, and chip discharge grooves having a V-shaped cross section are also formed between the flat surface portions along the longitudinal direction from the cutting edge. In the engraved drill, a plurality of spiral cutting oil feed grooves extending in the direction of the cutting edge with respect to the rotating direction of the drill are provided on the surface of the flat surface part over an appropriate length from the cutting edge, and cutting is performed by each cutting oil feeding groove. A drill characterized by the fact that oil is always forcibly sent toward the cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8664790U JPH0739524Y2 (en) | 1990-08-17 | 1990-08-17 | Drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8664790U JPH0739524Y2 (en) | 1990-08-17 | 1990-08-17 | Drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0445611U true JPH0445611U (en) | 1992-04-17 |
| JPH0739524Y2 JPH0739524Y2 (en) | 1995-09-13 |
Family
ID=31818418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8664790U Expired - Lifetime JPH0739524Y2 (en) | 1990-08-17 | 1990-08-17 | Drill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0739524Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013075355A (en) * | 2011-09-14 | 2013-04-25 | Kenjiro Kusunoki | Drill |
-
1990
- 1990-08-17 JP JP8664790U patent/JPH0739524Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013075355A (en) * | 2011-09-14 | 2013-04-25 | Kenjiro Kusunoki | Drill |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0739524Y2 (en) | 1995-09-13 |