JPH02117811U - - Google Patents
Info
- Publication number
- JPH02117811U JPH02117811U JP2799489U JP2799489U JPH02117811U JP H02117811 U JPH02117811 U JP H02117811U JP 2799489 U JP2799489 U JP 2799489U JP 2799489 U JP2799489 U JP 2799489U JP H02117811 U JPH02117811 U JP H02117811U
- Authority
- JP
- Japan
- Prior art keywords
- tool body
- outer circumferential
- circumferential surface
- grooves
- tip
- 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
Landscapes
- Drilling Tools (AREA)
Description
第１図及び第２図は本考案の一実施例を示す図
で、第１図は正面図、第２図は先端部の側面図、
第３図及び第４図は従来例を示す図で、第３図は
正面図、第４図は先端部の側面図である。
３……工具本体、４……先端逃げ面、５……溝
部、６……溝部の壁面、７……切刃、９……マー
ジン部、１０……二番取り面、１１……ガイドパ
ツト、Ｃ１……マージン部の円弧軌跡。
Figures 1 and 2 are views showing one embodiment of the present invention, with Figure 1 being a front view, Figure 2 being a side view of the tip,
3 and 4 are views showing a conventional example, with FIG. 3 being a front view and FIG. 4 being a side view of the tip. 3... Tool body, 4... Tip flank, 5... Groove, 6... Wall of groove, 7... Cutting edge, 9... Margin, 10... Second chamfer, 11... Guide pat, C 1 ...Circular trajectory of the margin part.
Claims (1)
に開口する２本の溝部が形成され、これら溝部の
回転方向を向く壁面と上記先端逃げ面との稜線部
に切刃が形成され、上記工具本体の外周面に、上
記各溝部に沿つてマージン部及び二番取り面が順
次形成されてなるガンドリルにおいて、 上記工具本体の各二番取り面に、径方向外方へ
突出するガイドパツトを、その外周面が工具回転
に伴つて描く円弧が、上記マージン部外周面の描
く円弧と一致するように設けたことを特徴とする
ガンドリル。[Claims for Utility Model Registration] Two grooves are formed on the outer circumferential surface of the tool body and open to the flank at the tip of the tool body, and the ridge line between the wall surface of these grooves facing the rotation direction and the flank at the tip. In the gun drill, a cutting edge is formed on the tool body, and a margin portion and a second chamfer are sequentially formed on the outer circumferential surface of the tool body along each of the grooves, and each of the second chamfers of the tool body has a radial direction. A gun drill characterized in that a guide part protruding outward is provided so that an arc drawn by the outer circumferential surface of the guide part as the tool rotates matches an arc drawn by the outer circumferential surface of the margin portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2799489U JPH02117811U (en) | 1989-03-10 | 1989-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2799489U JPH02117811U (en) | 1989-03-10 | 1989-03-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02117811U true JPH02117811U (en) | 1990-09-20 |
Family
ID=31250978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2799489U Pending JPH02117811U (en) | 1989-03-10 | 1989-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02117811U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005177891A (en) * | 2003-12-17 | 2005-07-07 | Mitsubishi Materials Corp | Drill |
| WO2010146839A1 (en) | 2009-06-15 | 2010-12-23 | 三菱マテリアル株式会社 | Drill with coolant holes |
-
1989
- 1989-03-10 JP JP2799489U patent/JPH02117811U/ja active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005177891A (en) * | 2003-12-17 | 2005-07-07 | Mitsubishi Materials Corp | Drill |
| WO2010146839A1 (en) | 2009-06-15 | 2010-12-23 | 三菱マテリアル株式会社 | Drill with coolant holes |
| CN102802853A (en) * | 2009-06-15 | 2012-11-28 | 三菱综合材料株式会社 | Drill with coolant holes |
| CN103962609A (en) * | 2009-06-15 | 2014-08-06 | 三菱综合材料株式会社 | Drill with coolant hole |
| CN102802853B (en) * | 2009-06-15 | 2014-12-17 | 三菱综合材料株式会社 | Drill with coolant holes |
| US9216460B2 (en) | 2009-06-15 | 2015-12-22 | Mitsubishi Materials Corporation | Coolant-hole equipped drill |
| DE202010018633U1 (en) | 2009-06-15 | 2019-03-06 | Mitsubishi Materials Corporation | Drill provided with a coolant hole |
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