JPH02100726U - - Google Patents
Info
- Publication number
- JPH02100726U JPH02100726U JP860389U JP860389U JPH02100726U JP H02100726 U JPH02100726 U JP H02100726U JP 860389 U JP860389 U JP 860389U JP 860389 U JP860389 U JP 860389U JP H02100726 U JPH02100726 U JP H02100726U
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- tip
- tool body
- edge ridge
- end mill
- 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.)
- Granted
Links
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000004323 axial length Effects 0.000 claims 1
Landscapes
- Milling Processes (AREA)
Description
第１図は、本考案テーパーエンドミルの一実施
例を示す正面図、第２図は、その拡大底面図、第
３図は、第２図に対する側面図、第４図は、刃先
部分を示す拡大斜視図、第５図は、第３図中の
―線に沿つて得られる拡大断面図、第６図は、
金型を示す一部断面図である。
１…テーパーエンドミル、２…工具本体、３…
シヤンク部分、４ａ…水平面、４ｂ…起立面、４
…フルート溝、５…先端逃げ面、６…先端切刃稜
、７…外周切刃稜、８…丸ランド。
Fig. 1 is a front view showing an embodiment of the tapered end mill of the present invention, Fig. 2 is an enlarged bottom view thereof, Fig. 3 is a side view of Fig. 2, and Fig. 4 is an enlarged view showing the cutting edge portion. A perspective view, FIG. 5 is an enlarged sectional view taken along the line - in FIG. 3, and FIG.
It is a partial sectional view showing a mold. 1... Taper end mill, 2... Tool body, 3...
shank part, 4a...horizontal surface, 4b...erecting surface, 4
...Flute groove, 5...Tip flank, 6...Tip cutting edge ridge, 7...Outer circumference cutting edge ridge, 8...Round land.
Claims (1)
らなり、しかも工具本体２が刃先部分を除いた部
分では、６角形の横断面を呈するようになつてい
るテーパーエンドミルにおいて、 前記刃先部分は、工具本体２の先端で水平面４
ａ、起立面４ｂからなる３つのフルート溝４およ
び先端逃げ面５が形成されることにより構成され
、これに伴つて３枚刃の先端切刃稜６およびこれ
に続く外周切刃稜７が備えられ、しかも、先端切
刃稜６の先端角αがα＝１２０°〜１６０°、先
端外周切刃稜７の軸方向長さｌが先端刃先径Ｄ基
準でｌ＝（１〜１．５）Ｄに設定されており、 前記６角形の横断面は、その内角がβ１および
β２の交互配置で、しかもβ２＞β１＝１００°
〜１１０°の関係にあるとともに、内角β１側の
コーナー部分には、丸ランド８が形成されるよう
になつていることを特徴とするテーパーエンドミ
ル。[Claims for Utility Model Registration] A tapered end mill consisting of a rod-shaped tool body 2 and a shank portion 3, and in which the tool body 2 has a hexagonal cross section except for the cutting edge portion, The cutting edge portion is located on the horizontal surface 4 at the tip of the tool body 2.
a, three flute grooves 4 consisting of upright surfaces 4b and a tip flank surface 5 are formed, and along with this, a three-blade tip cutting edge ridge 6 and a peripheral cutting edge ridge 7 following this are provided. Moreover, the tip angle α of the tip cutting edge ridge 6 is α=120° to 160°, and the axial length l of the tip outer peripheral cutting edge ridge 7 is l=(1 to 1.5) based on the tip cutting edge diameter D. D, and the hexagonal cross section has internal angles of β 1 and β 2 alternately, and β 2 > β 1 = 100°.
A tapered end mill characterized in that a round land 8 is formed at a corner portion on the 1 side of the inner angle β1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP860389U JPH0621610Y2 (en) | 1989-01-27 | 1989-01-27 | Taper end mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP860389U JPH0621610Y2 (en) | 1989-01-27 | 1989-01-27 | Taper end mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02100726U true JPH02100726U (en) | 1990-08-10 |
| JPH0621610Y2 JPH0621610Y2 (en) | 1994-06-08 |
Family
ID=31214628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP860389U Expired - Lifetime JPH0621610Y2 (en) | 1989-01-27 | 1989-01-27 | Taper end mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0621610Y2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003094226A (en) * | 2001-09-21 | 2003-04-03 | Hitachi Tool Engineering Ltd | End mill having taper portion |
| JP2007021610A (en) * | 2005-07-13 | 2007-02-01 | Nidec Nissin Corp | Tapered blade end mill and tapered bore forming method using the same |
-
1989
- 1989-01-27 JP JP860389U patent/JPH0621610Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003094226A (en) * | 2001-09-21 | 2003-04-03 | Hitachi Tool Engineering Ltd | End mill having taper portion |
| JP2007021610A (en) * | 2005-07-13 | 2007-02-01 | Nidec Nissin Corp | Tapered blade end mill and tapered bore forming method using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0621610Y2 (en) | 1994-06-08 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |