JPH0451317U - - Google Patents
Info
- Publication number
- JPH0451317U JPH0451317U JP9225290U JP9225290U JPH0451317U JP H0451317 U JPH0451317 U JP H0451317U JP 9225290 U JP9225290 U JP 9225290U JP 9225290 U JP9225290 U JP 9225290U JP H0451317 U JPH0451317 U JP H0451317U
- Authority
- JP
- Japan
- Prior art keywords
- tip
- margin
- cutting edge
- drill
- groove
- 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)
Description
第１図は、本考案ドリルの一実施例を示す正面
図、第２図は、拡大した一部側面図、第３図は、
拡大した底面図、第４図は、マージン部分の拡大
斜視図、第５図は、別の実施例を示す底面図であ
る。
１……ドリル本体、２……フルート溝、４……
先端切刃稜、５……マージン、６……外周切刃稜
、７……先端逃げ面、８……中央溝。
Fig. 1 is a front view showing an embodiment of the drill of the present invention, Fig. 2 is an enlarged partial side view, and Fig. 3 is a
FIG. 4 is an enlarged perspective view of the margin portion, and FIG. 5 is a bottom view showing another embodiment. 1...Drill body, 2...Flute groove, 4...
Tip cutting edge ridge, 5... Margin, 6... Outer cutting edge ridge, 7... Tip flank, 8... Center groove.
Claims (1)
形成されるとともに、その外周部分には、フルー
ト溝２に沿つて外周切刃稜６およびマージン５が
形成されるようになつているドリルにおいて、 前記マージン５には、先端逃げ面７側から延び
る中央溝８が備えられていることを特徴とするド
リル。[Claims for Utility Model Registration] A tip cutting edge ridge 4 is formed at the tip of the drill body 1, and an outer cutting edge 6 and a margin 5 are formed along the flute groove 2 at its outer peripheral portion. A drill characterized in that the margin 5 is provided with a central groove 8 extending from the side of the tip flank 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9225290U JPH0451317U (en) | 1990-08-31 | 1990-08-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9225290U JPH0451317U (en) | 1990-08-31 | 1990-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0451317U true JPH0451317U (en) | 1992-04-30 |
Family
ID=31828561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9225290U Pending JPH0451317U (en) | 1990-08-31 | 1990-08-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0451317U (en) |
-
1990
- 1990-08-31 JP JP9225290U patent/JPH0451317U/ja active Pending