JPS6239914U - - Google Patents
Info
- Publication number
- JPS6239914U JPS6239914U JP12948685U JP12948685U JPS6239914U JP S6239914 U JPS6239914 U JP S6239914U JP 12948685 U JP12948685 U JP 12948685U JP 12948685 U JP12948685 U JP 12948685U JP S6239914 U JPS6239914 U JP S6239914U
- Authority
- JP
- Japan
- Prior art keywords
- drill
- cutting edge
- reinforcing portion
- shank
- utility
- 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
- 230000003014 reinforcing effect Effects 0.000 claims 4
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Description
第１図は従来技術に係るドリルの正面図、第２
図は従来技術に係るドリルの先端部の一部端面図
、第３図は本考案に係るドリルの正面図、第４図
は本考案に係るドリルの先端部の一部端面図であ
る。
２０……ドリル、２２……シヤンク部、２４…
…刃部、２６ｂ，２６ｂ……切刃部、３２ａ，３
２ｂ……逃げ溝、３４ａ，３４ｂ……補強部、３
６ａ，３６ｂ……逃げ溝、３８ａ，３８ｂ……す
くい面。
Figure 1 is a front view of a conventional drill, Figure 2 is a front view of a drill according to the prior art;
3 is a front view of the drill according to the present invention, and FIG. 4 is a partial end view of the tip of the drill according to the present invention. 20...drill, 22...shank section, 24...
...Blade part, 26b, 26b...Cutting blade part, 32a, 3
2b... Relief groove, 34a, 34b... Reinforcement part, 3
6a, 36b... Relief groove, 38a, 38b... Rake face.
Claims (1)
て、前記刃部を構成する複数の切刃部相互の間に
形成される逃げ溝に前記シヤンク部方向に延在す
る凸状の補強部を設け、且つ前記切刃部先端部に
おける中心側の切刃の切削角度を周縁側の切刃の
切削角度に対して偏位するように形成することを
特徴とするドリル。 (2) 実用新案登録請求の範囲第１項記載のドリ
ルにおいて、補強部は逃げ溝の底部に沿つてシヤ
ンク部方向に延在してなるドリル。 (3) 実用新案登録請求の範囲第１項記載のドリ
ルにおいて、補強部は逃げ溝に沿つてドリルの軸
線と並列にシヤンク部方向に延在してなるドリル
。 (4) 実用新案登録請求の範囲第１項記載のドリ
ルにおいて、補強部には切刃部先端部において中
心側の切刃のすくい面および逃げ溝が形成されて
なるドリル。[Claims for Utility Model Registration] (1) In a drill having a shank part and a blade part, a relief groove formed between a plurality of cutting blade parts constituting the blade part extends in the direction of the shank part. A drill characterized in that a convex reinforcing portion is provided, and the cutting angle of the cutting edge on the center side at the tip of the cutting edge section is deviated from the cutting angle of the cutting edge on the peripheral side. . (2) The drill according to claim 1 of the utility model registration, in which the reinforcing portion extends toward the shank portion along the bottom of the relief groove. (3) A drill according to claim 1, in which the reinforcing portion extends along the clearance groove and parallel to the axis of the drill in the direction of the shank portion. (4) The drill according to claim 1 of the utility model registration, in which the reinforcing portion is formed with a center-side rake face and relief groove at the tip of the cutting edge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12948685U JPS6239914U (en) | 1985-08-27 | 1985-08-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12948685U JPS6239914U (en) | 1985-08-27 | 1985-08-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6239914U true JPS6239914U (en) | 1987-03-10 |
Family
ID=31026097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12948685U Pending JPS6239914U (en) | 1985-08-27 | 1985-08-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6239914U (en) |
-
1985
- 1985-08-27 JP JP12948685U patent/JPS6239914U/ja active Pending