JPH0294015U - - Google Patents
Info
- Publication number
- JPH0294015U JPH0294015U JP191289U JP191289U JPH0294015U JP H0294015 U JPH0294015 U JP H0294015U JP 191289 U JP191289 U JP 191289U JP 191289 U JP191289 U JP 191289U JP H0294015 U JPH0294015 U JP H0294015U
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- groove
- depth
- tip
- outer peripheral
- 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
- 238000005553 drilling Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Description
第１図は、本考案穴あけ工具の一実施例を示す
正面図、第２図は、その拡大側面図、第３図は、
変形例を示す拡大側面図である。
１……穴あけ工具、３……工具本体、４……フ
ルート溝、５……先端切刃稜、８……マージン、
９……ガイドパツト、１０……段溝、１１……外
周切刃稜、１２……チヤンフア刃。
Fig. 1 is a front view showing an embodiment of the drilling tool of the present invention, Fig. 2 is an enlarged side view thereof, and Fig. 3 is a
It is an enlarged side view showing a modification. 1...Drilling tool, 3...Tool body, 4...Flute groove, 5...Tip cutting edge ridge, 8...Margin,
9... Guide pat, 10... Step groove, 11... Outer cutting edge ridge, 12... Chamfer blade.
Claims (1)
た工具本体３の先端角αを有する先端切刃稜５が
備えられるとともに、工具本体３の外周部分には
、外周切刃稜１１を有するマージン８およびガイ
ドパツト９が備えられるようにした穴あけ工具に
おいて、 前記フルート溝４の水平面側の外縁部分には、
深さＸ、幅Ｙを有する段溝１０が設けられるとと
もに、この段溝１０とマージン８との交差稜によ
つて外周切刃稜１１が形成され、しかも段溝１０
の幅Ｙが刃先直径Ｄの１／１０以下で、深さＸの
２倍以下になつているとともに、この段溝１０の
段差面における直径方向のすくい角βが正角を構
成するようになつており、 前記先端切刃稜５の外周コーナー部分は、前記
段溝１０の形成によつてその一部が削除され、こ
れに伴つて軸方向に偏位量Ｚを有するチヤンフア
刃１２が段溝１０側に形成されるようにしたこと
を特徴とする穴あけ工具。[Claims for Utility Model Registration] The tool body 3 is provided with a tip cutting edge 5 having a tip angle α, in which a pair of flute grooves 4 extending in the axial direction are formed, and the outer peripheral portion of the tool body 3 includes: In the drilling tool, which is provided with a margin 8 having an outer cutting edge 11 and a guide pad 9, the outer edge portion of the flute groove 4 on the horizontal surface side is provided with:
A stepped groove 10 having a depth
The width Y is less than 1/10 of the diameter D of the cutting edge and less than twice the depth A part of the outer peripheral corner portion of the tip cutting edge ridge 5 is removed by forming the step groove 10, and accordingly, the chamfer blade 12 having an axial deviation amount Z forms the step groove. A drilling tool characterized in that the hole is formed on the 10 side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP191289U JPH0294015U (en) | 1989-01-11 | 1989-01-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP191289U JPH0294015U (en) | 1989-01-11 | 1989-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0294015U true JPH0294015U (en) | 1990-07-26 |
Family
ID=31202214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP191289U Pending JPH0294015U (en) | 1989-01-11 | 1989-01-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0294015U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010253616A (en) * | 2009-04-24 | 2010-11-11 | Tungaloy Corp | Drilling tool |
| JP2016147328A (en) * | 2015-02-10 | 2016-08-18 | 三菱マテリアル株式会社 | drill |
-
1989
- 1989-01-11 JP JP191289U patent/JPH0294015U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010253616A (en) * | 2009-04-24 | 2010-11-11 | Tungaloy Corp | Drilling tool |
| JP2016147328A (en) * | 2015-02-10 | 2016-08-18 | 三菱マテリアル株式会社 | drill |
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