JPH0476310U - - Google Patents
Info
- Publication number
- JPH0476310U JPH0476310U JP11893690U JP11893690U JPH0476310U JP H0476310 U JPH0476310 U JP H0476310U JP 11893690 U JP11893690 U JP 11893690U JP 11893690 U JP11893690 U JP 11893690U JP H0476310 U JPH0476310 U JP H0476310U
- Authority
- JP
- Japan
- Prior art keywords
- cutting blades
- helix angle
- end mill
- circumferential direction
- ball end
- 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
- 239000011295 pitch Substances 0.000 claims 3
Landscapes
- Milling Processes (AREA)
Description
第１図ないし第５図はいずれも本考案の一実施
例を示すもので、第１図は工具を軸線方向先端側
から見た状態を示す正面図、第２図は第１図の
方向からの矢視図、第３図は第２図の方向から
の矢視図、第４図は工具外周の展開図、第５図は
工具の正面視形状を簡略化して示す図である。
１……工具本体、２……半球部、３，４……切
刃、φ１，φ２，φ３……ねじれ角、α，β……
切刃の周方向ピツチ、θ……切刃の周方向ピツチ
差。
Figures 1 to 5 all show an embodiment of the present invention, with Figure 1 being a front view of the tool as seen from the axial tip side, and Figure 2 being a front view from the direction of Figure 1. 3 is a view taken from the direction of FIG. 2, FIG. 4 is a developed view of the outer periphery of the tool, and FIG. 5 is a simplified view showing the shape of the tool when viewed from the front. 1... Tool body, 2... Hemisphere section, 3, 4... Cutting edge, φ 1 , φ 2 , φ 3 ... Helix angle, α, β...
Circumferential pitch of cutting edge, θ...Difference in circumferential pitch of cutting edge.
Claims (1)
周に、上記半球部の頂点から当該工具本体の後端
側へ向かつて延びる複数の切刃が形成されてなる
ボールエンドミルにおいて、 上記切刃のうち少なくとも１の切刃の半球部に
おけるねじれ角を、他の切刃のねじれ角と異なる
角度に設定し、かつ、ねじれ角の差を当該半球部
の後端から先端側へ向かうに従つて漸次大きくな
るように変化させたことを特徴とするボールエン
ドミル。 (2) 上記半球部の後端における上記切刃の周方
向ピツチが不等分に設定されていることを特徴と
する請求項１記載のボールエンドミル。 (3) 上記半球部の後端における上記切刃の周方
向ピツチ差が、これら切刃を周方向へ等ピツチで
配置した場合の切刃位置から周方向へ±１０°の
範囲でずれるように設定されていることを特徴と
する請求項２記載のボールエンドミル。[Claims for Utility Model Registration] (1) A plurality of cutting edges are formed on the outer periphery of a tool body having a hemispherical portion formed on the tip side, extending from the apex of the hemispherical portion toward the rear end side of the tool body. In the ball end mill, the helix angle of at least one of the cutting blades is set to a different angle from the helix angle of the other cutting blades, and the difference in helix angle is set to a different angle from the helix angle of the other cutting blades, and A ball end mill characterized in that the size gradually increases from the end toward the tip. (2) The ball end mill according to claim 1, wherein the circumferential pitch of the cutting blade at the rear end of the hemispherical portion is set to be unequal. (3) The pitch difference in the circumferential direction of the cutting blades at the rear end of the hemispherical part is made to deviate within a range of ±10° in the circumferential direction from the position of the cutting blades when the cutting blades are arranged at equal pitches in the circumferential direction. The ball end mill according to claim 2, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11893690U JPH0718488Y2 (en) | 1990-11-14 | 1990-11-14 | Ball end mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11893690U JPH0718488Y2 (en) | 1990-11-14 | 1990-11-14 | Ball end mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0476310U true JPH0476310U (en) | 1992-07-03 |
| JPH0718488Y2 JPH0718488Y2 (en) | 1995-05-01 |
Family
ID=31866909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11893690U Expired - Lifetime JPH0718488Y2 (en) | 1990-11-14 | 1990-11-14 | Ball end mill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0718488Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11156622A (en) * | 1997-11-25 | 1999-06-15 | Hitachi Tool Eng Ltd | Spherical blade end mill |
| JP2006224254A (en) * | 2005-02-18 | 2006-08-31 | Izumo Sangyo Kk | Ball end mill |
| JP2021074798A (en) * | 2019-11-06 | 2021-05-20 | 株式会社ジーベックテクノロジー | Chamfer cutter and work-piece chamfering method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101953386B1 (en) * | 2018-05-25 | 2019-02-28 | 홍승렬 | Soft champer end mill |
-
1990
- 1990-11-14 JP JP11893690U patent/JPH0718488Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11156622A (en) * | 1997-11-25 | 1999-06-15 | Hitachi Tool Eng Ltd | Spherical blade end mill |
| JP2006224254A (en) * | 2005-02-18 | 2006-08-31 | Izumo Sangyo Kk | Ball end mill |
| JP2021074798A (en) * | 2019-11-06 | 2021-05-20 | 株式会社ジーベックテクノロジー | Chamfer cutter and work-piece chamfering method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0718488Y2 (en) | 1995-05-01 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| EXPY | Cancellation because of completion of term | ||
| R154 | Certificate of patent or utility model (reissue) |
Free format text: JAPANESE INTERMEDIATE CODE: R154 |