JPH0460607U - - Google Patents
Info
- Publication number
- JPH0460607U JPH0460607U JP10358890U JP10358890U JPH0460607U JP H0460607 U JPH0460607 U JP H0460607U JP 10358890 U JP10358890 U JP 10358890U JP 10358890 U JP10358890 U JP 10358890U JP H0460607 U JPH0460607 U JP H0460607U
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- ridge
- edge ridge
- honed
- pair
- 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
- 238000000034 method Methods 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、その底面図、第３図は、刃先部分
における一部拡大正面図である。
１……工具本体、２……フルート溝、４……先
端切刃稜、３ａ……１段目切刃稜、３ｂ……２段
目切刃稜。
FIG. 1 is a front view showing an embodiment of the drill of the present invention, FIG. 2 is a bottom view thereof, and FIG. 3 is a partially enlarged front view of the cutting edge portion. 1... Tool body, 2... Flute groove, 4... Tip cutting edge ridge, 3a... First step cutting edge ridge, 3b... Second step cutting edge ridge.
Claims (1)
には、１段目切刃稜３ａおよび２段目切刃稜３ｂ
からなる１対の先端切刃稜３が備えられるように
したドリルにおいて、 前記１段目切刃稜３ａは、その稜線部分にホー
ニング処理が施されており、 前記２段目切刃稜３ｂは、その稜線部分にホー
ニング処理が施されないとともに、その始点Ｏ２
から外周側までの距離Ｗが刃先径Ｄ標準でＷ＝1/
5〜1/20Ｄの範囲内で設定され、またその傾斜角
θがθ＝５°〜７°の範囲内で設定されるように
したことを特徴とするドリル。[Claims for Utility Model Registration] One end of the tool body 1 having a pair of flute grooves 2 has a first cutting edge ridge 3a and a second cutting edge ridge 3b.
In a drill equipped with a pair of tip cutting edge ridges 3, the first cutting edge ridge 3a has its ridge line portion honed, and the second cutting edge ridge 3b has a honing process. , the ridge line part is not honed and its starting point O 2
The distance W from
A drill characterized in that the angle of inclination θ is set within the range of 5 to 1/20D, and the inclination angle θ is set within the range of 5° to 7°.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10358890U JPH0460607U (en) | 1990-10-01 | 1990-10-01 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10358890U JPH0460607U (en) | 1990-10-01 | 1990-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0460607U true JPH0460607U (en) | 1992-05-25 |
Family
ID=31848527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10358890U Pending JPH0460607U (en) | 1990-10-01 | 1990-10-01 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0460607U (en) |
-
1990
- 1990-10-01 JP JP10358890U patent/JPH0460607U/ja active Pending
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